Initial Sample.

graphql-subscription/node_modules/graphql/validation/rules/ExecutableDefinitionsRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Executable definitions
+ *
+ * A GraphQL document is only valid for execution if all definitions are either
+ * operation or fragment definitions.
+ *
+ * See https://spec.graphql.org/draft/#sec-Executable-Definitions
+ */
+export declare function ExecutableDefinitionsRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/ExecutableDefinitionsRule.js

@@ -0,0 +1,46 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.ExecutableDefinitionsRule = ExecutableDefinitionsRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _predicates = require('../../language/predicates.js');
+
+/**
+ * Executable definitions
+ *
+ * A GraphQL document is only valid for execution if all definitions are either
+ * operation or fragment definitions.
+ *
+ * See https://spec.graphql.org/draft/#sec-Executable-Definitions
+ */
+function ExecutableDefinitionsRule(context) {
+  return {
+    Document(node) {
+      for (const definition of node.definitions) {
+        if (!(0, _predicates.isExecutableDefinitionNode)(definition)) {
+          const defName =
+            definition.kind === _kinds.Kind.SCHEMA_DEFINITION ||
+            definition.kind === _kinds.Kind.SCHEMA_EXTENSION
+              ? 'schema'
+              : '"' + definition.name.value + '"';
+          context.reportError(
+            new _GraphQLError.GraphQLError(
+              `The ${defName} definition is not executable.`,
+              {
+                nodes: definition,
+              },
+            ),
+          );
+        }
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/ExecutableDefinitionsRule.mjs

@@ -0,0 +1,34 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import { isExecutableDefinitionNode } from '../../language/predicates.mjs';
+
+/**
+ * Executable definitions
+ *
+ * A GraphQL document is only valid for execution if all definitions are either
+ * operation or fragment definitions.
+ *
+ * See https://spec.graphql.org/draft/#sec-Executable-Definitions
+ */
+export function ExecutableDefinitionsRule(context) {
+  return {
+    Document(node) {
+      for (const definition of node.definitions) {
+        if (!isExecutableDefinitionNode(definition)) {
+          const defName =
+            definition.kind === Kind.SCHEMA_DEFINITION ||
+            definition.kind === Kind.SCHEMA_EXTENSION
+              ? 'schema'
+              : '"' + definition.name.value + '"';
+          context.reportError(
+            new GraphQLError(`The ${defName} definition is not executable.`, {
+              nodes: definition,
+            }),
+          );
+        }
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/FieldsOnCorrectTypeRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Fields on correct type
+ *
+ * A GraphQL document is only valid if all fields selected are defined by the
+ * parent type, or are an allowed meta field such as __typename.
+ *
+ * See https://spec.graphql.org/draft/#sec-Field-Selections
+ */
+export declare function FieldsOnCorrectTypeRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/FieldsOnCorrectTypeRule.js

@@ -0,0 +1,145 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.FieldsOnCorrectTypeRule = FieldsOnCorrectTypeRule;
+
+var _didYouMean = require('../../jsutils/didYouMean.js');
+
+var _naturalCompare = require('../../jsutils/naturalCompare.js');
+
+var _suggestionList = require('../../jsutils/suggestionList.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _definition = require('../../type/definition.js');
+
+/**
+ * Fields on correct type
+ *
+ * A GraphQL document is only valid if all fields selected are defined by the
+ * parent type, or are an allowed meta field such as __typename.
+ *
+ * See https://spec.graphql.org/draft/#sec-Field-Selections
+ */
+function FieldsOnCorrectTypeRule(context) {
+  return {
+    Field(node) {
+      const type = context.getParentType();
+
+      if (type) {
+        const fieldDef = context.getFieldDef();
+
+        if (!fieldDef) {
+          // This field doesn't exist, lets look for suggestions.
+          const schema = context.getSchema();
+          const fieldName = node.name.value; // First determine if there are any suggested types to condition on.
+
+          let suggestion = (0, _didYouMean.didYouMean)(
+            'to use an inline fragment on',
+            getSuggestedTypeNames(schema, type, fieldName),
+          ); // If there are no suggested types, then perhaps this was a typo?
+
+          if (suggestion === '') {
+            suggestion = (0, _didYouMean.didYouMean)(
+              getSuggestedFieldNames(type, fieldName),
+            );
+          } // Report an error, including helpful suggestions.
+
+          context.reportError(
+            new _GraphQLError.GraphQLError(
+              `Cannot query field "${fieldName}" on type "${type.name}".` +
+                suggestion,
+              {
+                nodes: node,
+              },
+            ),
+          );
+        }
+      }
+    },
+  };
+}
+/**
+ * Go through all of the implementations of type, as well as the interfaces that
+ * they implement. If any of those types include the provided field, suggest them,
+ * sorted by how often the type is referenced.
+ */
+
+function getSuggestedTypeNames(schema, type, fieldName) {
+  if (!(0, _definition.isAbstractType)(type)) {
+    // Must be an Object type, which does not have possible fields.
+    return [];
+  }
+
+  const suggestedTypes = new Set();
+  const usageCount = Object.create(null);
+
+  for (const possibleType of schema.getPossibleTypes(type)) {
+    if (!possibleType.getFields()[fieldName]) {
+      continue;
+    } // This object type defines this field.
+
+    suggestedTypes.add(possibleType);
+    usageCount[possibleType.name] = 1;
+
+    for (const possibleInterface of possibleType.getInterfaces()) {
+      var _usageCount$possibleI;
+
+      if (!possibleInterface.getFields()[fieldName]) {
+        continue;
+      } // This interface type defines this field.
+
+      suggestedTypes.add(possibleInterface);
+      usageCount[possibleInterface.name] =
+        ((_usageCount$possibleI = usageCount[possibleInterface.name]) !==
+          null && _usageCount$possibleI !== void 0
+          ? _usageCount$possibleI
+          : 0) + 1;
+    }
+  }
+
+  return [...suggestedTypes]
+    .sort((typeA, typeB) => {
+      // Suggest both interface and object types based on how common they are.
+      const usageCountDiff = usageCount[typeB.name] - usageCount[typeA.name];
+
+      if (usageCountDiff !== 0) {
+        return usageCountDiff;
+      } // Suggest super types first followed by subtypes
+
+      if (
+        (0, _definition.isInterfaceType)(typeA) &&
+        schema.isSubType(typeA, typeB)
+      ) {
+        return -1;
+      }
+
+      if (
+        (0, _definition.isInterfaceType)(typeB) &&
+        schema.isSubType(typeB, typeA)
+      ) {
+        return 1;
+      }
+
+      return (0, _naturalCompare.naturalCompare)(typeA.name, typeB.name);
+    })
+    .map((x) => x.name);
+}
+/**
+ * For the field name provided, determine if there are any similar field names
+ * that may be the result of a typo.
+ */
+
+function getSuggestedFieldNames(type, fieldName) {
+  if (
+    (0, _definition.isObjectType)(type) ||
+    (0, _definition.isInterfaceType)(type)
+  ) {
+    const possibleFieldNames = Object.keys(type.getFields());
+    return (0, _suggestionList.suggestionList)(fieldName, possibleFieldNames);
+  } // Otherwise, must be a Union type, which does not define fields.
+
+  return [];
+}

graphql-subscription/node_modules/graphql/validation/rules/FieldsOnCorrectTypeRule.mjs

@@ -0,0 +1,127 @@
+import { didYouMean } from '../../jsutils/didYouMean.mjs';
+import { naturalCompare } from '../../jsutils/naturalCompare.mjs';
+import { suggestionList } from '../../jsutils/suggestionList.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import {
+  isAbstractType,
+  isInterfaceType,
+  isObjectType,
+} from '../../type/definition.mjs';
+
+/**
+ * Fields on correct type
+ *
+ * A GraphQL document is only valid if all fields selected are defined by the
+ * parent type, or are an allowed meta field such as __typename.
+ *
+ * See https://spec.graphql.org/draft/#sec-Field-Selections
+ */
+export function FieldsOnCorrectTypeRule(context) {
+  return {
+    Field(node) {
+      const type = context.getParentType();
+
+      if (type) {
+        const fieldDef = context.getFieldDef();
+
+        if (!fieldDef) {
+          // This field doesn't exist, lets look for suggestions.
+          const schema = context.getSchema();
+          const fieldName = node.name.value; // First determine if there are any suggested types to condition on.
+
+          let suggestion = didYouMean(
+            'to use an inline fragment on',
+            getSuggestedTypeNames(schema, type, fieldName),
+          ); // If there are no suggested types, then perhaps this was a typo?
+
+          if (suggestion === '') {
+            suggestion = didYouMean(getSuggestedFieldNames(type, fieldName));
+          } // Report an error, including helpful suggestions.
+
+          context.reportError(
+            new GraphQLError(
+              `Cannot query field "${fieldName}" on type "${type.name}".` +
+                suggestion,
+              {
+                nodes: node,
+              },
+            ),
+          );
+        }
+      }
+    },
+  };
+}
+/**
+ * Go through all of the implementations of type, as well as the interfaces that
+ * they implement. If any of those types include the provided field, suggest them,
+ * sorted by how often the type is referenced.
+ */
+
+function getSuggestedTypeNames(schema, type, fieldName) {
+  if (!isAbstractType(type)) {
+    // Must be an Object type, which does not have possible fields.
+    return [];
+  }
+
+  const suggestedTypes = new Set();
+  const usageCount = Object.create(null);
+
+  for (const possibleType of schema.getPossibleTypes(type)) {
+    if (!possibleType.getFields()[fieldName]) {
+      continue;
+    } // This object type defines this field.
+
+    suggestedTypes.add(possibleType);
+    usageCount[possibleType.name] = 1;
+
+    for (const possibleInterface of possibleType.getInterfaces()) {
+      var _usageCount$possibleI;
+
+      if (!possibleInterface.getFields()[fieldName]) {
+        continue;
+      } // This interface type defines this field.
+
+      suggestedTypes.add(possibleInterface);
+      usageCount[possibleInterface.name] =
+        ((_usageCount$possibleI = usageCount[possibleInterface.name]) !==
+          null && _usageCount$possibleI !== void 0
+          ? _usageCount$possibleI
+          : 0) + 1;
+    }
+  }
+
+  return [...suggestedTypes]
+    .sort((typeA, typeB) => {
+      // Suggest both interface and object types based on how common they are.
+      const usageCountDiff = usageCount[typeB.name] - usageCount[typeA.name];
+
+      if (usageCountDiff !== 0) {
+        return usageCountDiff;
+      } // Suggest super types first followed by subtypes
+
+      if (isInterfaceType(typeA) && schema.isSubType(typeA, typeB)) {
+        return -1;
+      }
+
+      if (isInterfaceType(typeB) && schema.isSubType(typeB, typeA)) {
+        return 1;
+      }
+
+      return naturalCompare(typeA.name, typeB.name);
+    })
+    .map((x) => x.name);
+}
+/**
+ * For the field name provided, determine if there are any similar field names
+ * that may be the result of a typo.
+ */
+
+function getSuggestedFieldNames(type, fieldName) {
+  if (isObjectType(type) || isInterfaceType(type)) {
+    const possibleFieldNames = Object.keys(type.getFields());
+    return suggestionList(fieldName, possibleFieldNames);
+  } // Otherwise, must be a Union type, which does not define fields.
+
+  return [];
+}

graphql-subscription/node_modules/graphql/validation/rules/FragmentsOnCompositeTypesRule.d.ts

@@ -0,0 +1,14 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Fragments on composite type
+ *
+ * Fragments use a type condition to determine if they apply, since fragments
+ * can only be spread into a composite type (object, interface, or union), the
+ * type condition must also be a composite type.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragments-On-Composite-Types
+ */
+export declare function FragmentsOnCompositeTypesRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/FragmentsOnCompositeTypesRule.js

@@ -0,0 +1,69 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.FragmentsOnCompositeTypesRule = FragmentsOnCompositeTypesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _printer = require('../../language/printer.js');
+
+var _definition = require('../../type/definition.js');
+
+var _typeFromAST = require('../../utilities/typeFromAST.js');
+
+/**
+ * Fragments on composite type
+ *
+ * Fragments use a type condition to determine if they apply, since fragments
+ * can only be spread into a composite type (object, interface, or union), the
+ * type condition must also be a composite type.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragments-On-Composite-Types
+ */
+function FragmentsOnCompositeTypesRule(context) {
+  return {
+    InlineFragment(node) {
+      const typeCondition = node.typeCondition;
+
+      if (typeCondition) {
+        const type = (0, _typeFromAST.typeFromAST)(
+          context.getSchema(),
+          typeCondition,
+        );
+
+        if (type && !(0, _definition.isCompositeType)(type)) {
+          const typeStr = (0, _printer.print)(typeCondition);
+          context.reportError(
+            new _GraphQLError.GraphQLError(
+              `Fragment cannot condition on non composite type "${typeStr}".`,
+              {
+                nodes: typeCondition,
+              },
+            ),
+          );
+        }
+      }
+    },
+
+    FragmentDefinition(node) {
+      const type = (0, _typeFromAST.typeFromAST)(
+        context.getSchema(),
+        node.typeCondition,
+      );
+
+      if (type && !(0, _definition.isCompositeType)(type)) {
+        const typeStr = (0, _printer.print)(node.typeCondition);
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Fragment "${node.name.value}" cannot condition on non composite type "${typeStr}".`,
+            {
+              nodes: node.typeCondition,
+            },
+          ),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/FragmentsOnCompositeTypesRule.mjs

@@ -0,0 +1,53 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { print } from '../../language/printer.mjs';
+import { isCompositeType } from '../../type/definition.mjs';
+import { typeFromAST } from '../../utilities/typeFromAST.mjs';
+
+/**
+ * Fragments on composite type
+ *
+ * Fragments use a type condition to determine if they apply, since fragments
+ * can only be spread into a composite type (object, interface, or union), the
+ * type condition must also be a composite type.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragments-On-Composite-Types
+ */
+export function FragmentsOnCompositeTypesRule(context) {
+  return {
+    InlineFragment(node) {
+      const typeCondition = node.typeCondition;
+
+      if (typeCondition) {
+        const type = typeFromAST(context.getSchema(), typeCondition);
+
+        if (type && !isCompositeType(type)) {
+          const typeStr = print(typeCondition);
+          context.reportError(
+            new GraphQLError(
+              `Fragment cannot condition on non composite type "${typeStr}".`,
+              {
+                nodes: typeCondition,
+              },
+            ),
+          );
+        }
+      }
+    },
+
+    FragmentDefinition(node) {
+      const type = typeFromAST(context.getSchema(), node.typeCondition);
+
+      if (type && !isCompositeType(type)) {
+        const typeStr = print(node.typeCondition);
+        context.reportError(
+          new GraphQLError(
+            `Fragment "${node.name.value}" cannot condition on non composite type "${typeStr}".`,
+            {
+              nodes: node.typeCondition,
+            },
+          ),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownArgumentNamesRule.d.ts

@@ -0,0 +1,23 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type {
+  SDLValidationContext,
+  ValidationContext,
+} from '../ValidationContext';
+/**
+ * Known argument names
+ *
+ * A GraphQL field is only valid if all supplied arguments are defined by
+ * that field.
+ *
+ * See https://spec.graphql.org/draft/#sec-Argument-Names
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-In-Valid-Locations
+ */
+export declare function KnownArgumentNamesRule(
+  context: ValidationContext,
+): ASTVisitor;
+/**
+ * @internal
+ */
+export declare function KnownArgumentNamesOnDirectivesRule(
+  context: ValidationContext | SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/KnownArgumentNamesRule.js

@@ -0,0 +1,120 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.KnownArgumentNamesOnDirectivesRule = KnownArgumentNamesOnDirectivesRule;
+exports.KnownArgumentNamesRule = KnownArgumentNamesRule;
+
+var _didYouMean = require('../../jsutils/didYouMean.js');
+
+var _suggestionList = require('../../jsutils/suggestionList.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _directives = require('../../type/directives.js');
+
+/**
+ * Known argument names
+ *
+ * A GraphQL field is only valid if all supplied arguments are defined by
+ * that field.
+ *
+ * See https://spec.graphql.org/draft/#sec-Argument-Names
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-In-Valid-Locations
+ */
+function KnownArgumentNamesRule(context) {
+  return {
+    // eslint-disable-next-line new-cap
+    ...KnownArgumentNamesOnDirectivesRule(context),
+
+    Argument(argNode) {
+      const argDef = context.getArgument();
+      const fieldDef = context.getFieldDef();
+      const parentType = context.getParentType();
+
+      if (!argDef && fieldDef && parentType) {
+        const argName = argNode.name.value;
+        const knownArgsNames = fieldDef.args.map((arg) => arg.name);
+        const suggestions = (0, _suggestionList.suggestionList)(
+          argName,
+          knownArgsNames,
+        );
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Unknown argument "${argName}" on field "${parentType.name}.${fieldDef.name}".` +
+              (0, _didYouMean.didYouMean)(suggestions),
+            {
+              nodes: argNode,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+/**
+ * @internal
+ */
+
+function KnownArgumentNamesOnDirectivesRule(context) {
+  const directiveArgs = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives = schema
+    ? schema.getDirectives()
+    : _directives.specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    directiveArgs[directive.name] = directive.args.map((arg) => arg.name);
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === _kinds.Kind.DIRECTIVE_DEFINITION) {
+      var _def$arguments;
+
+      // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const argsNodes =
+        (_def$arguments = def.arguments) !== null && _def$arguments !== void 0
+          ? _def$arguments
+          : [];
+      directiveArgs[def.name.value] = argsNodes.map((arg) => arg.name.value);
+    }
+  }
+
+  return {
+    Directive(directiveNode) {
+      const directiveName = directiveNode.name.value;
+      const knownArgs = directiveArgs[directiveName];
+
+      if (directiveNode.arguments && knownArgs) {
+        for (const argNode of directiveNode.arguments) {
+          const argName = argNode.name.value;
+
+          if (!knownArgs.includes(argName)) {
+            const suggestions = (0, _suggestionList.suggestionList)(
+              argName,
+              knownArgs,
+            );
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                `Unknown argument "${argName}" on directive "@${directiveName}".` +
+                  (0, _didYouMean.didYouMean)(suggestions),
+                {
+                  nodes: argNode,
+                },
+              ),
+            );
+          }
+        }
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownArgumentNamesRule.mjs

@@ -0,0 +1,102 @@
+import { didYouMean } from '../../jsutils/didYouMean.mjs';
+import { suggestionList } from '../../jsutils/suggestionList.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import { specifiedDirectives } from '../../type/directives.mjs';
+
+/**
+ * Known argument names
+ *
+ * A GraphQL field is only valid if all supplied arguments are defined by
+ * that field.
+ *
+ * See https://spec.graphql.org/draft/#sec-Argument-Names
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-In-Valid-Locations
+ */
+export function KnownArgumentNamesRule(context) {
+  return {
+    // eslint-disable-next-line new-cap
+    ...KnownArgumentNamesOnDirectivesRule(context),
+
+    Argument(argNode) {
+      const argDef = context.getArgument();
+      const fieldDef = context.getFieldDef();
+      const parentType = context.getParentType();
+
+      if (!argDef && fieldDef && parentType) {
+        const argName = argNode.name.value;
+        const knownArgsNames = fieldDef.args.map((arg) => arg.name);
+        const suggestions = suggestionList(argName, knownArgsNames);
+        context.reportError(
+          new GraphQLError(
+            `Unknown argument "${argName}" on field "${parentType.name}.${fieldDef.name}".` +
+              didYouMean(suggestions),
+            {
+              nodes: argNode,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+/**
+ * @internal
+ */
+
+export function KnownArgumentNamesOnDirectivesRule(context) {
+  const directiveArgs = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives = schema
+    ? schema.getDirectives()
+    : specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    directiveArgs[directive.name] = directive.args.map((arg) => arg.name);
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === Kind.DIRECTIVE_DEFINITION) {
+      var _def$arguments;
+
+      // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const argsNodes =
+        (_def$arguments = def.arguments) !== null && _def$arguments !== void 0
+          ? _def$arguments
+          : [];
+      directiveArgs[def.name.value] = argsNodes.map((arg) => arg.name.value);
+    }
+  }
+
+  return {
+    Directive(directiveNode) {
+      const directiveName = directiveNode.name.value;
+      const knownArgs = directiveArgs[directiveName];
+
+      if (directiveNode.arguments && knownArgs) {
+        for (const argNode of directiveNode.arguments) {
+          const argName = argNode.name.value;
+
+          if (!knownArgs.includes(argName)) {
+            const suggestions = suggestionList(argName, knownArgs);
+            context.reportError(
+              new GraphQLError(
+                `Unknown argument "${argName}" on directive "@${directiveName}".` +
+                  didYouMean(suggestions),
+                {
+                  nodes: argNode,
+                },
+              ),
+            );
+          }
+        }
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownDirectivesRule.d.ts

@@ -0,0 +1,16 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type {
+  SDLValidationContext,
+  ValidationContext,
+} from '../ValidationContext';
+/**
+ * Known directives
+ *
+ * A GraphQL document is only valid if all `@directives` are known by the
+ * schema and legally positioned.
+ *
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-Defined
+ */
+export declare function KnownDirectivesRule(
+  context: ValidationContext | SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/KnownDirectivesRule.js

@@ -0,0 +1,167 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.KnownDirectivesRule = KnownDirectivesRule;
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _invariant = require('../../jsutils/invariant.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _ast = require('../../language/ast.js');
+
+var _directiveLocation = require('../../language/directiveLocation.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _directives = require('../../type/directives.js');
+
+/**
+ * Known directives
+ *
+ * A GraphQL document is only valid if all `@directives` are known by the
+ * schema and legally positioned.
+ *
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-Defined
+ */
+function KnownDirectivesRule(context) {
+  const locationsMap = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives = schema
+    ? schema.getDirectives()
+    : _directives.specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    locationsMap[directive.name] = directive.locations;
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === _kinds.Kind.DIRECTIVE_DEFINITION) {
+      locationsMap[def.name.value] = def.locations.map((name) => name.value);
+    }
+  }
+
+  return {
+    Directive(node, _key, _parent, _path, ancestors) {
+      const name = node.name.value;
+      const locations = locationsMap[name];
+
+      if (!locations) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(`Unknown directive "@${name}".`, {
+            nodes: node,
+          }),
+        );
+        return;
+      }
+
+      const candidateLocation = getDirectiveLocationForASTPath(ancestors);
+
+      if (candidateLocation && !locations.includes(candidateLocation)) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Directive "@${name}" may not be used on ${candidateLocation}.`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+function getDirectiveLocationForASTPath(ancestors) {
+  const appliedTo = ancestors[ancestors.length - 1];
+  'kind' in appliedTo || (0, _invariant.invariant)(false);
+
+  switch (appliedTo.kind) {
+    case _kinds.Kind.OPERATION_DEFINITION:
+      return getDirectiveLocationForOperation(appliedTo.operation);
+
+    case _kinds.Kind.FIELD:
+      return _directiveLocation.DirectiveLocation.FIELD;
+
+    case _kinds.Kind.FRAGMENT_SPREAD:
+      return _directiveLocation.DirectiveLocation.FRAGMENT_SPREAD;
+
+    case _kinds.Kind.INLINE_FRAGMENT:
+      return _directiveLocation.DirectiveLocation.INLINE_FRAGMENT;
+
+    case _kinds.Kind.FRAGMENT_DEFINITION:
+      return _directiveLocation.DirectiveLocation.FRAGMENT_DEFINITION;
+
+    case _kinds.Kind.VARIABLE_DEFINITION:
+      return _directiveLocation.DirectiveLocation.VARIABLE_DEFINITION;
+
+    case _kinds.Kind.SCHEMA_DEFINITION:
+    case _kinds.Kind.SCHEMA_EXTENSION:
+      return _directiveLocation.DirectiveLocation.SCHEMA;
+
+    case _kinds.Kind.SCALAR_TYPE_DEFINITION:
+    case _kinds.Kind.SCALAR_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.SCALAR;
+
+    case _kinds.Kind.OBJECT_TYPE_DEFINITION:
+    case _kinds.Kind.OBJECT_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.OBJECT;
+
+    case _kinds.Kind.FIELD_DEFINITION:
+      return _directiveLocation.DirectiveLocation.FIELD_DEFINITION;
+
+    case _kinds.Kind.INTERFACE_TYPE_DEFINITION:
+    case _kinds.Kind.INTERFACE_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.INTERFACE;
+
+    case _kinds.Kind.UNION_TYPE_DEFINITION:
+    case _kinds.Kind.UNION_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.UNION;
+
+    case _kinds.Kind.ENUM_TYPE_DEFINITION:
+    case _kinds.Kind.ENUM_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.ENUM;
+
+    case _kinds.Kind.ENUM_VALUE_DEFINITION:
+      return _directiveLocation.DirectiveLocation.ENUM_VALUE;
+
+    case _kinds.Kind.INPUT_OBJECT_TYPE_DEFINITION:
+    case _kinds.Kind.INPUT_OBJECT_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.INPUT_OBJECT;
+
+    case _kinds.Kind.INPUT_VALUE_DEFINITION: {
+      const parentNode = ancestors[ancestors.length - 3];
+      'kind' in parentNode || (0, _invariant.invariant)(false);
+      return parentNode.kind === _kinds.Kind.INPUT_OBJECT_TYPE_DEFINITION
+        ? _directiveLocation.DirectiveLocation.INPUT_FIELD_DEFINITION
+        : _directiveLocation.DirectiveLocation.ARGUMENT_DEFINITION;
+    }
+    // Not reachable, all possible types have been considered.
+
+    /* c8 ignore next */
+
+    default:
+      false ||
+        (0, _invariant.invariant)(
+          false,
+          'Unexpected kind: ' + (0, _inspect.inspect)(appliedTo.kind),
+        );
+  }
+}
+
+function getDirectiveLocationForOperation(operation) {
+  switch (operation) {
+    case _ast.OperationTypeNode.QUERY:
+      return _directiveLocation.DirectiveLocation.QUERY;
+
+    case _ast.OperationTypeNode.MUTATION:
+      return _directiveLocation.DirectiveLocation.MUTATION;
+
+    case _ast.OperationTypeNode.SUBSCRIPTION:
+      return _directiveLocation.DirectiveLocation.SUBSCRIPTION;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownDirectivesRule.mjs

@@ -0,0 +1,150 @@
+import { inspect } from '../../jsutils/inspect.mjs';
+import { invariant } from '../../jsutils/invariant.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { OperationTypeNode } from '../../language/ast.mjs';
+import { DirectiveLocation } from '../../language/directiveLocation.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import { specifiedDirectives } from '../../type/directives.mjs';
+
+/**
+ * Known directives
+ *
+ * A GraphQL document is only valid if all `@directives` are known by the
+ * schema and legally positioned.
+ *
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-Defined
+ */
+export function KnownDirectivesRule(context) {
+  const locationsMap = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives = schema
+    ? schema.getDirectives()
+    : specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    locationsMap[directive.name] = directive.locations;
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === Kind.DIRECTIVE_DEFINITION) {
+      locationsMap[def.name.value] = def.locations.map((name) => name.value);
+    }
+  }
+
+  return {
+    Directive(node, _key, _parent, _path, ancestors) {
+      const name = node.name.value;
+      const locations = locationsMap[name];
+
+      if (!locations) {
+        context.reportError(
+          new GraphQLError(`Unknown directive "@${name}".`, {
+            nodes: node,
+          }),
+        );
+        return;
+      }
+
+      const candidateLocation = getDirectiveLocationForASTPath(ancestors);
+
+      if (candidateLocation && !locations.includes(candidateLocation)) {
+        context.reportError(
+          new GraphQLError(
+            `Directive "@${name}" may not be used on ${candidateLocation}.`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+function getDirectiveLocationForASTPath(ancestors) {
+  const appliedTo = ancestors[ancestors.length - 1];
+  'kind' in appliedTo || invariant(false);
+
+  switch (appliedTo.kind) {
+    case Kind.OPERATION_DEFINITION:
+      return getDirectiveLocationForOperation(appliedTo.operation);
+
+    case Kind.FIELD:
+      return DirectiveLocation.FIELD;
+
+    case Kind.FRAGMENT_SPREAD:
+      return DirectiveLocation.FRAGMENT_SPREAD;
+
+    case Kind.INLINE_FRAGMENT:
+      return DirectiveLocation.INLINE_FRAGMENT;
+
+    case Kind.FRAGMENT_DEFINITION:
+      return DirectiveLocation.FRAGMENT_DEFINITION;
+
+    case Kind.VARIABLE_DEFINITION:
+      return DirectiveLocation.VARIABLE_DEFINITION;
+
+    case Kind.SCHEMA_DEFINITION:
+    case Kind.SCHEMA_EXTENSION:
+      return DirectiveLocation.SCHEMA;
+
+    case Kind.SCALAR_TYPE_DEFINITION:
+    case Kind.SCALAR_TYPE_EXTENSION:
+      return DirectiveLocation.SCALAR;
+
+    case Kind.OBJECT_TYPE_DEFINITION:
+    case Kind.OBJECT_TYPE_EXTENSION:
+      return DirectiveLocation.OBJECT;
+
+    case Kind.FIELD_DEFINITION:
+      return DirectiveLocation.FIELD_DEFINITION;
+
+    case Kind.INTERFACE_TYPE_DEFINITION:
+    case Kind.INTERFACE_TYPE_EXTENSION:
+      return DirectiveLocation.INTERFACE;
+
+    case Kind.UNION_TYPE_DEFINITION:
+    case Kind.UNION_TYPE_EXTENSION:
+      return DirectiveLocation.UNION;
+
+    case Kind.ENUM_TYPE_DEFINITION:
+    case Kind.ENUM_TYPE_EXTENSION:
+      return DirectiveLocation.ENUM;
+
+    case Kind.ENUM_VALUE_DEFINITION:
+      return DirectiveLocation.ENUM_VALUE;
+
+    case Kind.INPUT_OBJECT_TYPE_DEFINITION:
+    case Kind.INPUT_OBJECT_TYPE_EXTENSION:
+      return DirectiveLocation.INPUT_OBJECT;
+
+    case Kind.INPUT_VALUE_DEFINITION: {
+      const parentNode = ancestors[ancestors.length - 3];
+      'kind' in parentNode || invariant(false);
+      return parentNode.kind === Kind.INPUT_OBJECT_TYPE_DEFINITION
+        ? DirectiveLocation.INPUT_FIELD_DEFINITION
+        : DirectiveLocation.ARGUMENT_DEFINITION;
+    }
+    // Not reachable, all possible types have been considered.
+
+    /* c8 ignore next */
+
+    default:
+      false || invariant(false, 'Unexpected kind: ' + inspect(appliedTo.kind));
+  }
+}
+
+function getDirectiveLocationForOperation(operation) {
+  switch (operation) {
+    case OperationTypeNode.QUERY:
+      return DirectiveLocation.QUERY;
+
+    case OperationTypeNode.MUTATION:
+      return DirectiveLocation.MUTATION;
+
+    case OperationTypeNode.SUBSCRIPTION:
+      return DirectiveLocation.SUBSCRIPTION;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownFragmentNamesRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Known fragment names
+ *
+ * A GraphQL document is only valid if all `...Fragment` fragment spreads refer
+ * to fragments defined in the same document.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-spread-target-defined
+ */
+export declare function KnownFragmentNamesRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/KnownFragmentNamesRule.js

@@ -0,0 +1,36 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.KnownFragmentNamesRule = KnownFragmentNamesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Known fragment names
+ *
+ * A GraphQL document is only valid if all `...Fragment` fragment spreads refer
+ * to fragments defined in the same document.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-spread-target-defined
+ */
+function KnownFragmentNamesRule(context) {
+  return {
+    FragmentSpread(node) {
+      const fragmentName = node.name.value;
+      const fragment = context.getFragment(fragmentName);
+
+      if (!fragment) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Unknown fragment "${fragmentName}".`,
+            {
+              nodes: node.name,
+            },
+          ),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownFragmentNamesRule.mjs

@@ -0,0 +1,26 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Known fragment names
+ *
+ * A GraphQL document is only valid if all `...Fragment` fragment spreads refer
+ * to fragments defined in the same document.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-spread-target-defined
+ */
+export function KnownFragmentNamesRule(context) {
+  return {
+    FragmentSpread(node) {
+      const fragmentName = node.name.value;
+      const fragment = context.getFragment(fragmentName);
+
+      if (!fragment) {
+        context.reportError(
+          new GraphQLError(`Unknown fragment "${fragmentName}".`, {
+            nodes: node.name,
+          }),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownTypeNamesRule.d.ts

@@ -0,0 +1,16 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type {
+  SDLValidationContext,
+  ValidationContext,
+} from '../ValidationContext';
+/**
+ * Known type names
+ *
+ * A GraphQL document is only valid if referenced types (specifically
+ * variable definitions and fragment conditions) are defined by the type schema.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-Spread-Type-Existence
+ */
+export declare function KnownTypeNamesRule(
+  context: ValidationContext | SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/KnownTypeNamesRule.js

@@ -0,0 +1,89 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.KnownTypeNamesRule = KnownTypeNamesRule;
+
+var _didYouMean = require('../../jsutils/didYouMean.js');
+
+var _suggestionList = require('../../jsutils/suggestionList.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _predicates = require('../../language/predicates.js');
+
+var _introspection = require('../../type/introspection.js');
+
+var _scalars = require('../../type/scalars.js');
+
+/**
+ * Known type names
+ *
+ * A GraphQL document is only valid if referenced types (specifically
+ * variable definitions and fragment conditions) are defined by the type schema.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-Spread-Type-Existence
+ */
+function KnownTypeNamesRule(context) {
+  const schema = context.getSchema();
+  const existingTypesMap = schema ? schema.getTypeMap() : Object.create(null);
+  const definedTypes = Object.create(null);
+
+  for (const def of context.getDocument().definitions) {
+    if ((0, _predicates.isTypeDefinitionNode)(def)) {
+      definedTypes[def.name.value] = true;
+    }
+  }
+
+  const typeNames = [
+    ...Object.keys(existingTypesMap),
+    ...Object.keys(definedTypes),
+  ];
+  return {
+    NamedType(node, _1, parent, _2, ancestors) {
+      const typeName = node.name.value;
+
+      if (!existingTypesMap[typeName] && !definedTypes[typeName]) {
+        var _ancestors$;
+
+        const definitionNode =
+          (_ancestors$ = ancestors[2]) !== null && _ancestors$ !== void 0
+            ? _ancestors$
+            : parent;
+        const isSDL = definitionNode != null && isSDLNode(definitionNode);
+
+        if (isSDL && standardTypeNames.includes(typeName)) {
+          return;
+        }
+
+        const suggestedTypes = (0, _suggestionList.suggestionList)(
+          typeName,
+          isSDL ? standardTypeNames.concat(typeNames) : typeNames,
+        );
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Unknown type "${typeName}".` +
+              (0, _didYouMean.didYouMean)(suggestedTypes),
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+const standardTypeNames = [
+  ..._scalars.specifiedScalarTypes,
+  ..._introspection.introspectionTypes,
+].map((type) => type.name);
+
+function isSDLNode(value) {
+  return (
+    'kind' in value &&
+    ((0, _predicates.isTypeSystemDefinitionNode)(value) ||
+      (0, _predicates.isTypeSystemExtensionNode)(value))
+  );
+}

graphql-subscription/node_modules/graphql/validation/rules/KnownTypeNamesRule.mjs

@@ -0,0 +1,77 @@
+import { didYouMean } from '../../jsutils/didYouMean.mjs';
+import { suggestionList } from '../../jsutils/suggestionList.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import {
+  isTypeDefinitionNode,
+  isTypeSystemDefinitionNode,
+  isTypeSystemExtensionNode,
+} from '../../language/predicates.mjs';
+import { introspectionTypes } from '../../type/introspection.mjs';
+import { specifiedScalarTypes } from '../../type/scalars.mjs';
+
+/**
+ * Known type names
+ *
+ * A GraphQL document is only valid if referenced types (specifically
+ * variable definitions and fragment conditions) are defined by the type schema.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-Spread-Type-Existence
+ */
+export function KnownTypeNamesRule(context) {
+  const schema = context.getSchema();
+  const existingTypesMap = schema ? schema.getTypeMap() : Object.create(null);
+  const definedTypes = Object.create(null);
+
+  for (const def of context.getDocument().definitions) {
+    if (isTypeDefinitionNode(def)) {
+      definedTypes[def.name.value] = true;
+    }
+  }
+
+  const typeNames = [
+    ...Object.keys(existingTypesMap),
+    ...Object.keys(definedTypes),
+  ];
+  return {
+    NamedType(node, _1, parent, _2, ancestors) {
+      const typeName = node.name.value;
+
+      if (!existingTypesMap[typeName] && !definedTypes[typeName]) {
+        var _ancestors$;
+
+        const definitionNode =
+          (_ancestors$ = ancestors[2]) !== null && _ancestors$ !== void 0
+            ? _ancestors$
+            : parent;
+        const isSDL = definitionNode != null && isSDLNode(definitionNode);
+
+        if (isSDL && standardTypeNames.includes(typeName)) {
+          return;
+        }
+
+        const suggestedTypes = suggestionList(
+          typeName,
+          isSDL ? standardTypeNames.concat(typeNames) : typeNames,
+        );
+        context.reportError(
+          new GraphQLError(
+            `Unknown type "${typeName}".` + didYouMean(suggestedTypes),
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+const standardTypeNames = [...specifiedScalarTypes, ...introspectionTypes].map(
+  (type) => type.name,
+);
+
+function isSDLNode(value) {
+  return (
+    'kind' in value &&
+    (isTypeSystemDefinitionNode(value) || isTypeSystemExtensionNode(value))
+  );
+}

graphql-subscription/node_modules/graphql/validation/rules/LoneAnonymousOperationRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Lone anonymous operation
+ *
+ * A GraphQL document is only valid if when it contains an anonymous operation
+ * (the query short-hand) that it contains only that one operation definition.
+ *
+ * See https://spec.graphql.org/draft/#sec-Lone-Anonymous-Operation
+ */
+export declare function LoneAnonymousOperationRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/LoneAnonymousOperationRule.js

@@ -0,0 +1,42 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.LoneAnonymousOperationRule = LoneAnonymousOperationRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+/**
+ * Lone anonymous operation
+ *
+ * A GraphQL document is only valid if when it contains an anonymous operation
+ * (the query short-hand) that it contains only that one operation definition.
+ *
+ * See https://spec.graphql.org/draft/#sec-Lone-Anonymous-Operation
+ */
+function LoneAnonymousOperationRule(context) {
+  let operationCount = 0;
+  return {
+    Document(node) {
+      operationCount = node.definitions.filter(
+        (definition) => definition.kind === _kinds.Kind.OPERATION_DEFINITION,
+      ).length;
+    },
+
+    OperationDefinition(node) {
+      if (!node.name && operationCount > 1) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            'This anonymous operation must be the only defined operation.',
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/LoneAnonymousOperationRule.mjs

@@ -0,0 +1,34 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+
+/**
+ * Lone anonymous operation
+ *
+ * A GraphQL document is only valid if when it contains an anonymous operation
+ * (the query short-hand) that it contains only that one operation definition.
+ *
+ * See https://spec.graphql.org/draft/#sec-Lone-Anonymous-Operation
+ */
+export function LoneAnonymousOperationRule(context) {
+  let operationCount = 0;
+  return {
+    Document(node) {
+      operationCount = node.definitions.filter(
+        (definition) => definition.kind === Kind.OPERATION_DEFINITION,
+      ).length;
+    },
+
+    OperationDefinition(node) {
+      if (!node.name && operationCount > 1) {
+        context.reportError(
+          new GraphQLError(
+            'This anonymous operation must be the only defined operation.',
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/LoneSchemaDefinitionRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Lone Schema definition
+ *
+ * A GraphQL document is only valid if it contains only one schema definition.
+ */
+export declare function LoneSchemaDefinitionRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/LoneSchemaDefinitionRule.js

@@ -0,0 +1,67 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.LoneSchemaDefinitionRule = LoneSchemaDefinitionRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Lone Schema definition
+ *
+ * A GraphQL document is only valid if it contains only one schema definition.
+ */
+function LoneSchemaDefinitionRule(context) {
+  var _ref, _ref2, _oldSchema$astNode;
+
+  const oldSchema = context.getSchema();
+  const alreadyDefined =
+    (_ref =
+      (_ref2 =
+        (_oldSchema$astNode =
+          oldSchema === null || oldSchema === void 0
+            ? void 0
+            : oldSchema.astNode) !== null && _oldSchema$astNode !== void 0
+          ? _oldSchema$astNode
+          : oldSchema === null || oldSchema === void 0
+          ? void 0
+          : oldSchema.getQueryType()) !== null && _ref2 !== void 0
+        ? _ref2
+        : oldSchema === null || oldSchema === void 0
+        ? void 0
+        : oldSchema.getMutationType()) !== null && _ref !== void 0
+      ? _ref
+      : oldSchema === null || oldSchema === void 0
+      ? void 0
+      : oldSchema.getSubscriptionType();
+  let schemaDefinitionsCount = 0;
+  return {
+    SchemaDefinition(node) {
+      if (alreadyDefined) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            'Cannot define a new schema within a schema extension.',
+            {
+              nodes: node,
+            },
+          ),
+        );
+        return;
+      }
+
+      if (schemaDefinitionsCount > 0) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            'Must provide only one schema definition.',
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+
+      ++schemaDefinitionsCount;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/LoneSchemaDefinitionRule.mjs

@@ -0,0 +1,57 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Lone Schema definition
+ *
+ * A GraphQL document is only valid if it contains only one schema definition.
+ */
+export function LoneSchemaDefinitionRule(context) {
+  var _ref, _ref2, _oldSchema$astNode;
+
+  const oldSchema = context.getSchema();
+  const alreadyDefined =
+    (_ref =
+      (_ref2 =
+        (_oldSchema$astNode =
+          oldSchema === null || oldSchema === void 0
+            ? void 0
+            : oldSchema.astNode) !== null && _oldSchema$astNode !== void 0
+          ? _oldSchema$astNode
+          : oldSchema === null || oldSchema === void 0
+          ? void 0
+          : oldSchema.getQueryType()) !== null && _ref2 !== void 0
+        ? _ref2
+        : oldSchema === null || oldSchema === void 0
+        ? void 0
+        : oldSchema.getMutationType()) !== null && _ref !== void 0
+      ? _ref
+      : oldSchema === null || oldSchema === void 0
+      ? void 0
+      : oldSchema.getSubscriptionType();
+  let schemaDefinitionsCount = 0;
+  return {
+    SchemaDefinition(node) {
+      if (alreadyDefined) {
+        context.reportError(
+          new GraphQLError(
+            'Cannot define a new schema within a schema extension.',
+            {
+              nodes: node,
+            },
+          ),
+        );
+        return;
+      }
+
+      if (schemaDefinitionsCount > 0) {
+        context.reportError(
+          new GraphQLError('Must provide only one schema definition.', {
+            nodes: node,
+          }),
+        );
+      }
+
+      ++schemaDefinitionsCount;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/NoFragmentCyclesRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * No fragment cycles
+ *
+ * The graph of fragment spreads must not form any cycles including spreading itself.
+ * Otherwise an operation could infinitely spread or infinitely execute on cycles in the underlying data.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-spreads-must-not-form-cycles
+ */
+export declare function NoFragmentCyclesRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/NoFragmentCyclesRule.js

@@ -0,0 +1,85 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.NoFragmentCyclesRule = NoFragmentCyclesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * No fragment cycles
+ *
+ * The graph of fragment spreads must not form any cycles including spreading itself.
+ * Otherwise an operation could infinitely spread or infinitely execute on cycles in the underlying data.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-spreads-must-not-form-cycles
+ */
+function NoFragmentCyclesRule(context) {
+  // Tracks already visited fragments to maintain O(N) and to ensure that cycles
+  // are not redundantly reported.
+  const visitedFrags = Object.create(null); // Array of AST nodes used to produce meaningful errors
+
+  const spreadPath = []; // Position in the spread path
+
+  const spreadPathIndexByName = Object.create(null);
+  return {
+    OperationDefinition: () => false,
+
+    FragmentDefinition(node) {
+      detectCycleRecursive(node);
+      return false;
+    },
+  }; // This does a straight-forward DFS to find cycles.
+  // It does not terminate when a cycle was found but continues to explore
+  // the graph to find all possible cycles.
+
+  function detectCycleRecursive(fragment) {
+    if (visitedFrags[fragment.name.value]) {
+      return;
+    }
+
+    const fragmentName = fragment.name.value;
+    visitedFrags[fragmentName] = true;
+    const spreadNodes = context.getFragmentSpreads(fragment.selectionSet);
+
+    if (spreadNodes.length === 0) {
+      return;
+    }
+
+    spreadPathIndexByName[fragmentName] = spreadPath.length;
+
+    for (const spreadNode of spreadNodes) {
+      const spreadName = spreadNode.name.value;
+      const cycleIndex = spreadPathIndexByName[spreadName];
+      spreadPath.push(spreadNode);
+
+      if (cycleIndex === undefined) {
+        const spreadFragment = context.getFragment(spreadName);
+
+        if (spreadFragment) {
+          detectCycleRecursive(spreadFragment);
+        }
+      } else {
+        const cyclePath = spreadPath.slice(cycleIndex);
+        const viaPath = cyclePath
+          .slice(0, -1)
+          .map((s) => '"' + s.name.value + '"')
+          .join(', ');
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Cannot spread fragment "${spreadName}" within itself` +
+              (viaPath !== '' ? ` via ${viaPath}.` : '.'),
+            {
+              nodes: cyclePath,
+            },
+          ),
+        );
+      }
+
+      spreadPath.pop();
+    }
+
+    spreadPathIndexByName[fragmentName] = undefined;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/NoFragmentCyclesRule.mjs

@@ -0,0 +1,78 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * No fragment cycles
+ *
+ * The graph of fragment spreads must not form any cycles including spreading itself.
+ * Otherwise an operation could infinitely spread or infinitely execute on cycles in the underlying data.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-spreads-must-not-form-cycles
+ */
+export function NoFragmentCyclesRule(context) {
+  // Tracks already visited fragments to maintain O(N) and to ensure that cycles
+  // are not redundantly reported.
+  const visitedFrags = Object.create(null); // Array of AST nodes used to produce meaningful errors
+
+  const spreadPath = []; // Position in the spread path
+
+  const spreadPathIndexByName = Object.create(null);
+  return {
+    OperationDefinition: () => false,
+
+    FragmentDefinition(node) {
+      detectCycleRecursive(node);
+      return false;
+    },
+  }; // This does a straight-forward DFS to find cycles.
+  // It does not terminate when a cycle was found but continues to explore
+  // the graph to find all possible cycles.
+
+  function detectCycleRecursive(fragment) {
+    if (visitedFrags[fragment.name.value]) {
+      return;
+    }
+
+    const fragmentName = fragment.name.value;
+    visitedFrags[fragmentName] = true;
+    const spreadNodes = context.getFragmentSpreads(fragment.selectionSet);
+
+    if (spreadNodes.length === 0) {
+      return;
+    }
+
+    spreadPathIndexByName[fragmentName] = spreadPath.length;
+
+    for (const spreadNode of spreadNodes) {
+      const spreadName = spreadNode.name.value;
+      const cycleIndex = spreadPathIndexByName[spreadName];
+      spreadPath.push(spreadNode);
+
+      if (cycleIndex === undefined) {
+        const spreadFragment = context.getFragment(spreadName);
+
+        if (spreadFragment) {
+          detectCycleRecursive(spreadFragment);
+        }
+      } else {
+        const cyclePath = spreadPath.slice(cycleIndex);
+        const viaPath = cyclePath
+          .slice(0, -1)
+          .map((s) => '"' + s.name.value + '"')
+          .join(', ');
+        context.reportError(
+          new GraphQLError(
+            `Cannot spread fragment "${spreadName}" within itself` +
+              (viaPath !== '' ? ` via ${viaPath}.` : '.'),
+            {
+              nodes: cyclePath,
+            },
+          ),
+        );
+      }
+
+      spreadPath.pop();
+    }
+
+    spreadPathIndexByName[fragmentName] = undefined;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/NoUndefinedVariablesRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * No undefined variables
+ *
+ * A GraphQL operation is only valid if all variables encountered, both directly
+ * and via fragment spreads, are defined by that operation.
+ *
+ * See https://spec.graphql.org/draft/#sec-All-Variable-Uses-Defined
+ */
+export declare function NoUndefinedVariablesRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/NoUndefinedVariablesRule.js

@@ -0,0 +1,52 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.NoUndefinedVariablesRule = NoUndefinedVariablesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * No undefined variables
+ *
+ * A GraphQL operation is only valid if all variables encountered, both directly
+ * and via fragment spreads, are defined by that operation.
+ *
+ * See https://spec.graphql.org/draft/#sec-All-Variable-Uses-Defined
+ */
+function NoUndefinedVariablesRule(context) {
+  let variableNameDefined = Object.create(null);
+  return {
+    OperationDefinition: {
+      enter() {
+        variableNameDefined = Object.create(null);
+      },
+
+      leave(operation) {
+        const usages = context.getRecursiveVariableUsages(operation);
+
+        for (const { node } of usages) {
+          const varName = node.name.value;
+
+          if (variableNameDefined[varName] !== true) {
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                operation.name
+                  ? `Variable "$${varName}" is not defined by operation "${operation.name.value}".`
+                  : `Variable "$${varName}" is not defined.`,
+                {
+                  nodes: [node, operation],
+                },
+              ),
+            );
+          }
+        }
+      },
+    },
+
+    VariableDefinition(node) {
+      variableNameDefined[node.variable.name.value] = true;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/NoUndefinedVariablesRule.mjs

@@ -0,0 +1,45 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * No undefined variables
+ *
+ * A GraphQL operation is only valid if all variables encountered, both directly
+ * and via fragment spreads, are defined by that operation.
+ *
+ * See https://spec.graphql.org/draft/#sec-All-Variable-Uses-Defined
+ */
+export function NoUndefinedVariablesRule(context) {
+  let variableNameDefined = Object.create(null);
+  return {
+    OperationDefinition: {
+      enter() {
+        variableNameDefined = Object.create(null);
+      },
+
+      leave(operation) {
+        const usages = context.getRecursiveVariableUsages(operation);
+
+        for (const { node } of usages) {
+          const varName = node.name.value;
+
+          if (variableNameDefined[varName] !== true) {
+            context.reportError(
+              new GraphQLError(
+                operation.name
+                  ? `Variable "$${varName}" is not defined by operation "${operation.name.value}".`
+                  : `Variable "$${varName}" is not defined.`,
+                {
+                  nodes: [node, operation],
+                },
+              ),
+            );
+          }
+        }
+      },
+    },
+
+    VariableDefinition(node) {
+      variableNameDefined[node.variable.name.value] = true;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/NoUnusedFragmentsRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * No unused fragments
+ *
+ * A GraphQL document is only valid if all fragment definitions are spread
+ * within operations, or spread within other fragments spread within operations.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragments-Must-Be-Used
+ */
+export declare function NoUnusedFragmentsRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/NoUnusedFragmentsRule.js

@@ -0,0 +1,61 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.NoUnusedFragmentsRule = NoUnusedFragmentsRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * No unused fragments
+ *
+ * A GraphQL document is only valid if all fragment definitions are spread
+ * within operations, or spread within other fragments spread within operations.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragments-Must-Be-Used
+ */
+function NoUnusedFragmentsRule(context) {
+  const operationDefs = [];
+  const fragmentDefs = [];
+  return {
+    OperationDefinition(node) {
+      operationDefs.push(node);
+      return false;
+    },
+
+    FragmentDefinition(node) {
+      fragmentDefs.push(node);
+      return false;
+    },
+
+    Document: {
+      leave() {
+        const fragmentNameUsed = Object.create(null);
+
+        for (const operation of operationDefs) {
+          for (const fragment of context.getRecursivelyReferencedFragments(
+            operation,
+          )) {
+            fragmentNameUsed[fragment.name.value] = true;
+          }
+        }
+
+        for (const fragmentDef of fragmentDefs) {
+          const fragName = fragmentDef.name.value;
+
+          if (fragmentNameUsed[fragName] !== true) {
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                `Fragment "${fragName}" is never used.`,
+                {
+                  nodes: fragmentDef,
+                },
+              ),
+            );
+          }
+        }
+      },
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/NoUnusedFragmentsRule.mjs

@@ -0,0 +1,51 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * No unused fragments
+ *
+ * A GraphQL document is only valid if all fragment definitions are spread
+ * within operations, or spread within other fragments spread within operations.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragments-Must-Be-Used
+ */
+export function NoUnusedFragmentsRule(context) {
+  const operationDefs = [];
+  const fragmentDefs = [];
+  return {
+    OperationDefinition(node) {
+      operationDefs.push(node);
+      return false;
+    },
+
+    FragmentDefinition(node) {
+      fragmentDefs.push(node);
+      return false;
+    },
+
+    Document: {
+      leave() {
+        const fragmentNameUsed = Object.create(null);
+
+        for (const operation of operationDefs) {
+          for (const fragment of context.getRecursivelyReferencedFragments(
+            operation,
+          )) {
+            fragmentNameUsed[fragment.name.value] = true;
+          }
+        }
+
+        for (const fragmentDef of fragmentDefs) {
+          const fragName = fragmentDef.name.value;
+
+          if (fragmentNameUsed[fragName] !== true) {
+            context.reportError(
+              new GraphQLError(`Fragment "${fragName}" is never used.`, {
+                nodes: fragmentDef,
+              }),
+            );
+          }
+        }
+      },
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/NoUnusedVariablesRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * No unused variables
+ *
+ * A GraphQL operation is only valid if all variables defined by an operation
+ * are used, either directly or within a spread fragment.
+ *
+ * See https://spec.graphql.org/draft/#sec-All-Variables-Used
+ */
+export declare function NoUnusedVariablesRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/NoUnusedVariablesRule.js

@@ -0,0 +1,57 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.NoUnusedVariablesRule = NoUnusedVariablesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * No unused variables
+ *
+ * A GraphQL operation is only valid if all variables defined by an operation
+ * are used, either directly or within a spread fragment.
+ *
+ * See https://spec.graphql.org/draft/#sec-All-Variables-Used
+ */
+function NoUnusedVariablesRule(context) {
+  let variableDefs = [];
+  return {
+    OperationDefinition: {
+      enter() {
+        variableDefs = [];
+      },
+
+      leave(operation) {
+        const variableNameUsed = Object.create(null);
+        const usages = context.getRecursiveVariableUsages(operation);
+
+        for (const { node } of usages) {
+          variableNameUsed[node.name.value] = true;
+        }
+
+        for (const variableDef of variableDefs) {
+          const variableName = variableDef.variable.name.value;
+
+          if (variableNameUsed[variableName] !== true) {
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                operation.name
+                  ? `Variable "$${variableName}" is never used in operation "${operation.name.value}".`
+                  : `Variable "$${variableName}" is never used.`,
+                {
+                  nodes: variableDef,
+                },
+              ),
+            );
+          }
+        }
+      },
+    },
+
+    VariableDefinition(def) {
+      variableDefs.push(def);
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/NoUnusedVariablesRule.mjs

@@ -0,0 +1,50 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * No unused variables
+ *
+ * A GraphQL operation is only valid if all variables defined by an operation
+ * are used, either directly or within a spread fragment.
+ *
+ * See https://spec.graphql.org/draft/#sec-All-Variables-Used
+ */
+export function NoUnusedVariablesRule(context) {
+  let variableDefs = [];
+  return {
+    OperationDefinition: {
+      enter() {
+        variableDefs = [];
+      },
+
+      leave(operation) {
+        const variableNameUsed = Object.create(null);
+        const usages = context.getRecursiveVariableUsages(operation);
+
+        for (const { node } of usages) {
+          variableNameUsed[node.name.value] = true;
+        }
+
+        for (const variableDef of variableDefs) {
+          const variableName = variableDef.variable.name.value;
+
+          if (variableNameUsed[variableName] !== true) {
+            context.reportError(
+              new GraphQLError(
+                operation.name
+                  ? `Variable "$${variableName}" is never used in operation "${operation.name.value}".`
+                  : `Variable "$${variableName}" is never used.`,
+                {
+                  nodes: variableDef,
+                },
+              ),
+            );
+          }
+        }
+      },
+    },
+
+    VariableDefinition(def) {
+      variableDefs.push(def);
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/OverlappingFieldsCanBeMergedRule.d.ts

@@ -0,0 +1,14 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Overlapping fields can be merged
+ *
+ * A selection set is only valid if all fields (including spreading any
+ * fragments) either correspond to distinct response names or can be merged
+ * without ambiguity.
+ *
+ * See https://spec.graphql.org/draft/#sec-Field-Selection-Merging
+ */
+export declare function OverlappingFieldsCanBeMergedRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/OverlappingFieldsCanBeMergedRule.js

@@ -0,0 +1,820 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.OverlappingFieldsCanBeMergedRule = OverlappingFieldsCanBeMergedRule;
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _printer = require('../../language/printer.js');
+
+var _definition = require('../../type/definition.js');
+
+var _sortValueNode = require('../../utilities/sortValueNode.js');
+
+var _typeFromAST = require('../../utilities/typeFromAST.js');
+
+function reasonMessage(reason) {
+  if (Array.isArray(reason)) {
+    return reason
+      .map(
+        ([responseName, subReason]) =>
+          `subfields "${responseName}" conflict because ` +
+          reasonMessage(subReason),
+      )
+      .join(' and ');
+  }
+
+  return reason;
+}
+/**
+ * Overlapping fields can be merged
+ *
+ * A selection set is only valid if all fields (including spreading any
+ * fragments) either correspond to distinct response names or can be merged
+ * without ambiguity.
+ *
+ * See https://spec.graphql.org/draft/#sec-Field-Selection-Merging
+ */
+
+function OverlappingFieldsCanBeMergedRule(context) {
+  // A memoization for when two fragments are compared "between" each other for
+  // conflicts. Two fragments may be compared many times, so memoizing this can
+  // dramatically improve the performance of this validator.
+  const comparedFragmentPairs = new PairSet(); // A cache for the "field map" and list of fragment names found in any given
+  // selection set. Selection sets may be asked for this information multiple
+  // times, so this improves the performance of this validator.
+
+  const cachedFieldsAndFragmentNames = new Map();
+  return {
+    SelectionSet(selectionSet) {
+      const conflicts = findConflictsWithinSelectionSet(
+        context,
+        cachedFieldsAndFragmentNames,
+        comparedFragmentPairs,
+        context.getParentType(),
+        selectionSet,
+      );
+
+      for (const [[responseName, reason], fields1, fields2] of conflicts) {
+        const reasonMsg = reasonMessage(reason);
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Fields "${responseName}" conflict because ${reasonMsg}. Use different aliases on the fields to fetch both if this was intentional.`,
+            {
+              nodes: fields1.concat(fields2),
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+/**
+ * Algorithm:
+ *
+ * Conflicts occur when two fields exist in a query which will produce the same
+ * response name, but represent differing values, thus creating a conflict.
+ * The algorithm below finds all conflicts via making a series of comparisons
+ * between fields. In order to compare as few fields as possible, this makes
+ * a series of comparisons "within" sets of fields and "between" sets of fields.
+ *
+ * Given any selection set, a collection produces both a set of fields by
+ * also including all inline fragments, as well as a list of fragments
+ * referenced by fragment spreads.
+ *
+ * A) Each selection set represented in the document first compares "within" its
+ * collected set of fields, finding any conflicts between every pair of
+ * overlapping fields.
+ * Note: This is the *only time* that a the fields "within" a set are compared
+ * to each other. After this only fields "between" sets are compared.
+ *
+ * B) Also, if any fragment is referenced in a selection set, then a
+ * comparison is made "between" the original set of fields and the
+ * referenced fragment.
+ *
+ * C) Also, if multiple fragments are referenced, then comparisons
+ * are made "between" each referenced fragment.
+ *
+ * D) When comparing "between" a set of fields and a referenced fragment, first
+ * a comparison is made between each field in the original set of fields and
+ * each field in the the referenced set of fields.
+ *
+ * E) Also, if any fragment is referenced in the referenced selection set,
+ * then a comparison is made "between" the original set of fields and the
+ * referenced fragment (recursively referring to step D).
+ *
+ * F) When comparing "between" two fragments, first a comparison is made between
+ * each field in the first referenced set of fields and each field in the the
+ * second referenced set of fields.
+ *
+ * G) Also, any fragments referenced by the first must be compared to the
+ * second, and any fragments referenced by the second must be compared to the
+ * first (recursively referring to step F).
+ *
+ * H) When comparing two fields, if both have selection sets, then a comparison
+ * is made "between" both selection sets, first comparing the set of fields in
+ * the first selection set with the set of fields in the second.
+ *
+ * I) Also, if any fragment is referenced in either selection set, then a
+ * comparison is made "between" the other set of fields and the
+ * referenced fragment.
+ *
+ * J) Also, if two fragments are referenced in both selection sets, then a
+ * comparison is made "between" the two fragments.
+ *
+ */
+// Find all conflicts found "within" a selection set, including those found
+// via spreading in fragments. Called when visiting each SelectionSet in the
+// GraphQL Document.
+function findConflictsWithinSelectionSet(
+  context,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  parentType,
+  selectionSet,
+) {
+  const conflicts = [];
+  const [fieldMap, fragmentNames] = getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    parentType,
+    selectionSet,
+  ); // (A) Find find all conflicts "within" the fields of this selection set.
+  // Note: this is the *only place* `collectConflictsWithin` is called.
+
+  collectConflictsWithin(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    fieldMap,
+  );
+
+  if (fragmentNames.length !== 0) {
+    // (B) Then collect conflicts between these fields and those represented by
+    // each spread fragment name found.
+    for (let i = 0; i < fragmentNames.length; i++) {
+      collectConflictsBetweenFieldsAndFragment(
+        context,
+        conflicts,
+        cachedFieldsAndFragmentNames,
+        comparedFragmentPairs,
+        false,
+        fieldMap,
+        fragmentNames[i],
+      ); // (C) Then compare this fragment with all other fragments found in this
+      // selection set to collect conflicts between fragments spread together.
+      // This compares each item in the list of fragment names to every other
+      // item in that same list (except for itself).
+
+      for (let j = i + 1; j < fragmentNames.length; j++) {
+        collectConflictsBetweenFragments(
+          context,
+          conflicts,
+          cachedFieldsAndFragmentNames,
+          comparedFragmentPairs,
+          false,
+          fragmentNames[i],
+          fragmentNames[j],
+        );
+      }
+    }
+  }
+
+  return conflicts;
+} // Collect all conflicts found between a set of fields and a fragment reference
+// including via spreading in any nested fragments.
+
+function collectConflictsBetweenFieldsAndFragment(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  areMutuallyExclusive,
+  fieldMap,
+  fragmentName,
+) {
+  const fragment = context.getFragment(fragmentName);
+
+  if (!fragment) {
+    return;
+  }
+
+  const [fieldMap2, referencedFragmentNames] =
+    getReferencedFieldsAndFragmentNames(
+      context,
+      cachedFieldsAndFragmentNames,
+      fragment,
+    ); // Do not compare a fragment's fieldMap to itself.
+
+  if (fieldMap === fieldMap2) {
+    return;
+  } // (D) First collect any conflicts between the provided collection of fields
+  // and the collection of fields represented by the given fragment.
+
+  collectConflictsBetween(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    areMutuallyExclusive,
+    fieldMap,
+    fieldMap2,
+  ); // (E) Then collect any conflicts between the provided collection of fields
+  // and any fragment names found in the given fragment.
+
+  for (const referencedFragmentName of referencedFragmentNames) {
+    // Memoize so two fragments are not compared for conflicts more than once.
+    if (
+      comparedFragmentPairs.has(
+        referencedFragmentName,
+        fragmentName,
+        areMutuallyExclusive,
+      )
+    ) {
+      continue;
+    }
+
+    comparedFragmentPairs.add(
+      referencedFragmentName,
+      fragmentName,
+      areMutuallyExclusive,
+    );
+    collectConflictsBetweenFieldsAndFragment(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fieldMap,
+      referencedFragmentName,
+    );
+  }
+} // Collect all conflicts found between two fragments, including via spreading in
+// any nested fragments.
+
+function collectConflictsBetweenFragments(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  areMutuallyExclusive,
+  fragmentName1,
+  fragmentName2,
+) {
+  // No need to compare a fragment to itself.
+  if (fragmentName1 === fragmentName2) {
+    return;
+  } // Memoize so two fragments are not compared for conflicts more than once.
+
+  if (
+    comparedFragmentPairs.has(
+      fragmentName1,
+      fragmentName2,
+      areMutuallyExclusive,
+    )
+  ) {
+    return;
+  }
+
+  comparedFragmentPairs.add(fragmentName1, fragmentName2, areMutuallyExclusive);
+  const fragment1 = context.getFragment(fragmentName1);
+  const fragment2 = context.getFragment(fragmentName2);
+
+  if (!fragment1 || !fragment2) {
+    return;
+  }
+
+  const [fieldMap1, referencedFragmentNames1] =
+    getReferencedFieldsAndFragmentNames(
+      context,
+      cachedFieldsAndFragmentNames,
+      fragment1,
+    );
+  const [fieldMap2, referencedFragmentNames2] =
+    getReferencedFieldsAndFragmentNames(
+      context,
+      cachedFieldsAndFragmentNames,
+      fragment2,
+    ); // (F) First, collect all conflicts between these two collections of fields
+  // (not including any nested fragments).
+
+  collectConflictsBetween(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    areMutuallyExclusive,
+    fieldMap1,
+    fieldMap2,
+  ); // (G) Then collect conflicts between the first fragment and any nested
+  // fragments spread in the second fragment.
+
+  for (const referencedFragmentName2 of referencedFragmentNames2) {
+    collectConflictsBetweenFragments(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fragmentName1,
+      referencedFragmentName2,
+    );
+  } // (G) Then collect conflicts between the second fragment and any nested
+  // fragments spread in the first fragment.
+
+  for (const referencedFragmentName1 of referencedFragmentNames1) {
+    collectConflictsBetweenFragments(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      referencedFragmentName1,
+      fragmentName2,
+    );
+  }
+} // Find all conflicts found between two selection sets, including those found
+// via spreading in fragments. Called when determining if conflicts exist
+// between the sub-fields of two overlapping fields.
+
+function findConflictsBetweenSubSelectionSets(
+  context,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  areMutuallyExclusive,
+  parentType1,
+  selectionSet1,
+  parentType2,
+  selectionSet2,
+) {
+  const conflicts = [];
+  const [fieldMap1, fragmentNames1] = getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    parentType1,
+    selectionSet1,
+  );
+  const [fieldMap2, fragmentNames2] = getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    parentType2,
+    selectionSet2,
+  ); // (H) First, collect all conflicts between these two collections of field.
+
+  collectConflictsBetween(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    areMutuallyExclusive,
+    fieldMap1,
+    fieldMap2,
+  ); // (I) Then collect conflicts between the first collection of fields and
+  // those referenced by each fragment name associated with the second.
+
+  for (const fragmentName2 of fragmentNames2) {
+    collectConflictsBetweenFieldsAndFragment(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fieldMap1,
+      fragmentName2,
+    );
+  } // (I) Then collect conflicts between the second collection of fields and
+  // those referenced by each fragment name associated with the first.
+
+  for (const fragmentName1 of fragmentNames1) {
+    collectConflictsBetweenFieldsAndFragment(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fieldMap2,
+      fragmentName1,
+    );
+  } // (J) Also collect conflicts between any fragment names by the first and
+  // fragment names by the second. This compares each item in the first set of
+  // names to each item in the second set of names.
+
+  for (const fragmentName1 of fragmentNames1) {
+    for (const fragmentName2 of fragmentNames2) {
+      collectConflictsBetweenFragments(
+        context,
+        conflicts,
+        cachedFieldsAndFragmentNames,
+        comparedFragmentPairs,
+        areMutuallyExclusive,
+        fragmentName1,
+        fragmentName2,
+      );
+    }
+  }
+
+  return conflicts;
+} // Collect all Conflicts "within" one collection of fields.
+
+function collectConflictsWithin(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  fieldMap,
+) {
+  // A field map is a keyed collection, where each key represents a response
+  // name and the value at that key is a list of all fields which provide that
+  // response name. For every response name, if there are multiple fields, they
+  // must be compared to find a potential conflict.
+  for (const [responseName, fields] of Object.entries(fieldMap)) {
+    // This compares every field in the list to every other field in this list
+    // (except to itself). If the list only has one item, nothing needs to
+    // be compared.
+    if (fields.length > 1) {
+      for (let i = 0; i < fields.length; i++) {
+        for (let j = i + 1; j < fields.length; j++) {
+          const conflict = findConflict(
+            context,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            false, // within one collection is never mutually exclusive
+            responseName,
+            fields[i],
+            fields[j],
+          );
+
+          if (conflict) {
+            conflicts.push(conflict);
+          }
+        }
+      }
+    }
+  }
+} // Collect all Conflicts between two collections of fields. This is similar to,
+// but different from the `collectConflictsWithin` function above. This check
+// assumes that `collectConflictsWithin` has already been called on each
+// provided collection of fields. This is true because this validator traverses
+// each individual selection set.
+
+function collectConflictsBetween(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  parentFieldsAreMutuallyExclusive,
+  fieldMap1,
+  fieldMap2,
+) {
+  // A field map is a keyed collection, where each key represents a response
+  // name and the value at that key is a list of all fields which provide that
+  // response name. For any response name which appears in both provided field
+  // maps, each field from the first field map must be compared to every field
+  // in the second field map to find potential conflicts.
+  for (const [responseName, fields1] of Object.entries(fieldMap1)) {
+    const fields2 = fieldMap2[responseName];
+
+    if (fields2) {
+      for (const field1 of fields1) {
+        for (const field2 of fields2) {
+          const conflict = findConflict(
+            context,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            parentFieldsAreMutuallyExclusive,
+            responseName,
+            field1,
+            field2,
+          );
+
+          if (conflict) {
+            conflicts.push(conflict);
+          }
+        }
+      }
+    }
+  }
+} // Determines if there is a conflict between two particular fields, including
+// comparing their sub-fields.
+
+function findConflict(
+  context,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  parentFieldsAreMutuallyExclusive,
+  responseName,
+  field1,
+  field2,
+) {
+  const [parentType1, node1, def1] = field1;
+  const [parentType2, node2, def2] = field2; // If it is known that two fields could not possibly apply at the same
+  // time, due to the parent types, then it is safe to permit them to diverge
+  // in aliased field or arguments used as they will not present any ambiguity
+  // by differing.
+  // It is known that two parent types could never overlap if they are
+  // different Object types. Interface or Union types might overlap - if not
+  // in the current state of the schema, then perhaps in some future version,
+  // thus may not safely diverge.
+
+  const areMutuallyExclusive =
+    parentFieldsAreMutuallyExclusive ||
+    (parentType1 !== parentType2 &&
+      (0, _definition.isObjectType)(parentType1) &&
+      (0, _definition.isObjectType)(parentType2));
+
+  if (!areMutuallyExclusive) {
+    // Two aliases must refer to the same field.
+    const name1 = node1.name.value;
+    const name2 = node2.name.value;
+
+    if (name1 !== name2) {
+      return [
+        [responseName, `"${name1}" and "${name2}" are different fields`],
+        [node1],
+        [node2],
+      ];
+    } // Two field calls must have the same arguments.
+
+    if (!sameArguments(node1, node2)) {
+      return [
+        [responseName, 'they have differing arguments'],
+        [node1],
+        [node2],
+      ];
+    }
+  } // The return type for each field.
+
+  const type1 = def1 === null || def1 === void 0 ? void 0 : def1.type;
+  const type2 = def2 === null || def2 === void 0 ? void 0 : def2.type;
+
+  if (type1 && type2 && doTypesConflict(type1, type2)) {
+    return [
+      [
+        responseName,
+        `they return conflicting types "${(0, _inspect.inspect)(
+          type1,
+        )}" and "${(0, _inspect.inspect)(type2)}"`,
+      ],
+      [node1],
+      [node2],
+    ];
+  } // Collect and compare sub-fields. Use the same "visited fragment names" list
+  // for both collections so fields in a fragment reference are never
+  // compared to themselves.
+
+  const selectionSet1 = node1.selectionSet;
+  const selectionSet2 = node2.selectionSet;
+
+  if (selectionSet1 && selectionSet2) {
+    const conflicts = findConflictsBetweenSubSelectionSets(
+      context,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      (0, _definition.getNamedType)(type1),
+      selectionSet1,
+      (0, _definition.getNamedType)(type2),
+      selectionSet2,
+    );
+    return subfieldConflicts(conflicts, responseName, node1, node2);
+  }
+}
+
+function sameArguments(node1, node2) {
+  const args1 = node1.arguments;
+  const args2 = node2.arguments;
+
+  if (args1 === undefined || args1.length === 0) {
+    return args2 === undefined || args2.length === 0;
+  }
+
+  if (args2 === undefined || args2.length === 0) {
+    return false;
+  }
+  /* c8 ignore next */
+
+  if (args1.length !== args2.length) {
+    /* c8 ignore next */
+    return false;
+    /* c8 ignore next */
+  }
+
+  const values2 = new Map(args2.map(({ name, value }) => [name.value, value]));
+  return args1.every((arg1) => {
+    const value1 = arg1.value;
+    const value2 = values2.get(arg1.name.value);
+
+    if (value2 === undefined) {
+      return false;
+    }
+
+    return stringifyValue(value1) === stringifyValue(value2);
+  });
+}
+
+function stringifyValue(value) {
+  return (0, _printer.print)((0, _sortValueNode.sortValueNode)(value));
+} // Two types conflict if both types could not apply to a value simultaneously.
+// Composite types are ignored as their individual field types will be compared
+// later recursively. However List and Non-Null types must match.
+
+function doTypesConflict(type1, type2) {
+  if ((0, _definition.isListType)(type1)) {
+    return (0, _definition.isListType)(type2)
+      ? doTypesConflict(type1.ofType, type2.ofType)
+      : true;
+  }
+
+  if ((0, _definition.isListType)(type2)) {
+    return true;
+  }
+
+  if ((0, _definition.isNonNullType)(type1)) {
+    return (0, _definition.isNonNullType)(type2)
+      ? doTypesConflict(type1.ofType, type2.ofType)
+      : true;
+  }
+
+  if ((0, _definition.isNonNullType)(type2)) {
+    return true;
+  }
+
+  if (
+    (0, _definition.isLeafType)(type1) ||
+    (0, _definition.isLeafType)(type2)
+  ) {
+    return type1 !== type2;
+  }
+
+  return false;
+} // Given a selection set, return the collection of fields (a mapping of response
+// name to field nodes and definitions) as well as a list of fragment names
+// referenced via fragment spreads.
+
+function getFieldsAndFragmentNames(
+  context,
+  cachedFieldsAndFragmentNames,
+  parentType,
+  selectionSet,
+) {
+  const cached = cachedFieldsAndFragmentNames.get(selectionSet);
+
+  if (cached) {
+    return cached;
+  }
+
+  const nodeAndDefs = Object.create(null);
+  const fragmentNames = Object.create(null);
+
+  _collectFieldsAndFragmentNames(
+    context,
+    parentType,
+    selectionSet,
+    nodeAndDefs,
+    fragmentNames,
+  );
+
+  const result = [nodeAndDefs, Object.keys(fragmentNames)];
+  cachedFieldsAndFragmentNames.set(selectionSet, result);
+  return result;
+} // Given a reference to a fragment, return the represented collection of fields
+// as well as a list of nested fragment names referenced via fragment spreads.
+
+function getReferencedFieldsAndFragmentNames(
+  context,
+  cachedFieldsAndFragmentNames,
+  fragment,
+) {
+  // Short-circuit building a type from the node if possible.
+  const cached = cachedFieldsAndFragmentNames.get(fragment.selectionSet);
+
+  if (cached) {
+    return cached;
+  }
+
+  const fragmentType = (0, _typeFromAST.typeFromAST)(
+    context.getSchema(),
+    fragment.typeCondition,
+  );
+  return getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    fragmentType,
+    fragment.selectionSet,
+  );
+}
+
+function _collectFieldsAndFragmentNames(
+  context,
+  parentType,
+  selectionSet,
+  nodeAndDefs,
+  fragmentNames,
+) {
+  for (const selection of selectionSet.selections) {
+    switch (selection.kind) {
+      case _kinds.Kind.FIELD: {
+        const fieldName = selection.name.value;
+        let fieldDef;
+
+        if (
+          (0, _definition.isObjectType)(parentType) ||
+          (0, _definition.isInterfaceType)(parentType)
+        ) {
+          fieldDef = parentType.getFields()[fieldName];
+        }
+
+        const responseName = selection.alias
+          ? selection.alias.value
+          : fieldName;
+
+        if (!nodeAndDefs[responseName]) {
+          nodeAndDefs[responseName] = [];
+        }
+
+        nodeAndDefs[responseName].push([parentType, selection, fieldDef]);
+        break;
+      }
+
+      case _kinds.Kind.FRAGMENT_SPREAD:
+        fragmentNames[selection.name.value] = true;
+        break;
+
+      case _kinds.Kind.INLINE_FRAGMENT: {
+        const typeCondition = selection.typeCondition;
+        const inlineFragmentType = typeCondition
+          ? (0, _typeFromAST.typeFromAST)(context.getSchema(), typeCondition)
+          : parentType;
+
+        _collectFieldsAndFragmentNames(
+          context,
+          inlineFragmentType,
+          selection.selectionSet,
+          nodeAndDefs,
+          fragmentNames,
+        );
+
+        break;
+      }
+    }
+  }
+} // Given a series of Conflicts which occurred between two sub-fields, generate
+// a single Conflict.
+
+function subfieldConflicts(conflicts, responseName, node1, node2) {
+  if (conflicts.length > 0) {
+    return [
+      [responseName, conflicts.map(([reason]) => reason)],
+      [node1, ...conflicts.map(([, fields1]) => fields1).flat()],
+      [node2, ...conflicts.map(([, , fields2]) => fields2).flat()],
+    ];
+  }
+}
+/**
+ * A way to keep track of pairs of things when the ordering of the pair does not matter.
+ */
+
+class PairSet {
+  constructor() {
+    this._data = new Map();
+  }
+
+  has(a, b, areMutuallyExclusive) {
+    var _this$_data$get;
+
+    const [key1, key2] = a < b ? [a, b] : [b, a];
+    const result =
+      (_this$_data$get = this._data.get(key1)) === null ||
+      _this$_data$get === void 0
+        ? void 0
+        : _this$_data$get.get(key2);
+
+    if (result === undefined) {
+      return false;
+    } // areMutuallyExclusive being false is a superset of being true, hence if
+    // we want to know if this PairSet "has" these two with no exclusivity,
+    // we have to ensure it was added as such.
+
+    return areMutuallyExclusive ? true : areMutuallyExclusive === result;
+  }
+
+  add(a, b, areMutuallyExclusive) {
+    const [key1, key2] = a < b ? [a, b] : [b, a];
+
+    const map = this._data.get(key1);
+
+    if (map === undefined) {
+      this._data.set(key1, new Map([[key2, areMutuallyExclusive]]));
+    } else {
+      map.set(key2, areMutuallyExclusive);
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/OverlappingFieldsCanBeMergedRule.mjs

@@ -0,0 +1,805 @@
+import { inspect } from '../../jsutils/inspect.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import { print } from '../../language/printer.mjs';
+import {
+  getNamedType,
+  isInterfaceType,
+  isLeafType,
+  isListType,
+  isNonNullType,
+  isObjectType,
+} from '../../type/definition.mjs';
+import { sortValueNode } from '../../utilities/sortValueNode.mjs';
+import { typeFromAST } from '../../utilities/typeFromAST.mjs';
+
+function reasonMessage(reason) {
+  if (Array.isArray(reason)) {
+    return reason
+      .map(
+        ([responseName, subReason]) =>
+          `subfields "${responseName}" conflict because ` +
+          reasonMessage(subReason),
+      )
+      .join(' and ');
+  }
+
+  return reason;
+}
+/**
+ * Overlapping fields can be merged
+ *
+ * A selection set is only valid if all fields (including spreading any
+ * fragments) either correspond to distinct response names or can be merged
+ * without ambiguity.
+ *
+ * See https://spec.graphql.org/draft/#sec-Field-Selection-Merging
+ */
+
+export function OverlappingFieldsCanBeMergedRule(context) {
+  // A memoization for when two fragments are compared "between" each other for
+  // conflicts. Two fragments may be compared many times, so memoizing this can
+  // dramatically improve the performance of this validator.
+  const comparedFragmentPairs = new PairSet(); // A cache for the "field map" and list of fragment names found in any given
+  // selection set. Selection sets may be asked for this information multiple
+  // times, so this improves the performance of this validator.
+
+  const cachedFieldsAndFragmentNames = new Map();
+  return {
+    SelectionSet(selectionSet) {
+      const conflicts = findConflictsWithinSelectionSet(
+        context,
+        cachedFieldsAndFragmentNames,
+        comparedFragmentPairs,
+        context.getParentType(),
+        selectionSet,
+      );
+
+      for (const [[responseName, reason], fields1, fields2] of conflicts) {
+        const reasonMsg = reasonMessage(reason);
+        context.reportError(
+          new GraphQLError(
+            `Fields "${responseName}" conflict because ${reasonMsg}. Use different aliases on the fields to fetch both if this was intentional.`,
+            {
+              nodes: fields1.concat(fields2),
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+/**
+ * Algorithm:
+ *
+ * Conflicts occur when two fields exist in a query which will produce the same
+ * response name, but represent differing values, thus creating a conflict.
+ * The algorithm below finds all conflicts via making a series of comparisons
+ * between fields. In order to compare as few fields as possible, this makes
+ * a series of comparisons "within" sets of fields and "between" sets of fields.
+ *
+ * Given any selection set, a collection produces both a set of fields by
+ * also including all inline fragments, as well as a list of fragments
+ * referenced by fragment spreads.
+ *
+ * A) Each selection set represented in the document first compares "within" its
+ * collected set of fields, finding any conflicts between every pair of
+ * overlapping fields.
+ * Note: This is the *only time* that a the fields "within" a set are compared
+ * to each other. After this only fields "between" sets are compared.
+ *
+ * B) Also, if any fragment is referenced in a selection set, then a
+ * comparison is made "between" the original set of fields and the
+ * referenced fragment.
+ *
+ * C) Also, if multiple fragments are referenced, then comparisons
+ * are made "between" each referenced fragment.
+ *
+ * D) When comparing "between" a set of fields and a referenced fragment, first
+ * a comparison is made between each field in the original set of fields and
+ * each field in the the referenced set of fields.
+ *
+ * E) Also, if any fragment is referenced in the referenced selection set,
+ * then a comparison is made "between" the original set of fields and the
+ * referenced fragment (recursively referring to step D).
+ *
+ * F) When comparing "between" two fragments, first a comparison is made between
+ * each field in the first referenced set of fields and each field in the the
+ * second referenced set of fields.
+ *
+ * G) Also, any fragments referenced by the first must be compared to the
+ * second, and any fragments referenced by the second must be compared to the
+ * first (recursively referring to step F).
+ *
+ * H) When comparing two fields, if both have selection sets, then a comparison
+ * is made "between" both selection sets, first comparing the set of fields in
+ * the first selection set with the set of fields in the second.
+ *
+ * I) Also, if any fragment is referenced in either selection set, then a
+ * comparison is made "between" the other set of fields and the
+ * referenced fragment.
+ *
+ * J) Also, if two fragments are referenced in both selection sets, then a
+ * comparison is made "between" the two fragments.
+ *
+ */
+// Find all conflicts found "within" a selection set, including those found
+// via spreading in fragments. Called when visiting each SelectionSet in the
+// GraphQL Document.
+function findConflictsWithinSelectionSet(
+  context,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  parentType,
+  selectionSet,
+) {
+  const conflicts = [];
+  const [fieldMap, fragmentNames] = getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    parentType,
+    selectionSet,
+  ); // (A) Find find all conflicts "within" the fields of this selection set.
+  // Note: this is the *only place* `collectConflictsWithin` is called.
+
+  collectConflictsWithin(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    fieldMap,
+  );
+
+  if (fragmentNames.length !== 0) {
+    // (B) Then collect conflicts between these fields and those represented by
+    // each spread fragment name found.
+    for (let i = 0; i < fragmentNames.length; i++) {
+      collectConflictsBetweenFieldsAndFragment(
+        context,
+        conflicts,
+        cachedFieldsAndFragmentNames,
+        comparedFragmentPairs,
+        false,
+        fieldMap,
+        fragmentNames[i],
+      ); // (C) Then compare this fragment with all other fragments found in this
+      // selection set to collect conflicts between fragments spread together.
+      // This compares each item in the list of fragment names to every other
+      // item in that same list (except for itself).
+
+      for (let j = i + 1; j < fragmentNames.length; j++) {
+        collectConflictsBetweenFragments(
+          context,
+          conflicts,
+          cachedFieldsAndFragmentNames,
+          comparedFragmentPairs,
+          false,
+          fragmentNames[i],
+          fragmentNames[j],
+        );
+      }
+    }
+  }
+
+  return conflicts;
+} // Collect all conflicts found between a set of fields and a fragment reference
+// including via spreading in any nested fragments.
+
+function collectConflictsBetweenFieldsAndFragment(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  areMutuallyExclusive,
+  fieldMap,
+  fragmentName,
+) {
+  const fragment = context.getFragment(fragmentName);
+
+  if (!fragment) {
+    return;
+  }
+
+  const [fieldMap2, referencedFragmentNames] =
+    getReferencedFieldsAndFragmentNames(
+      context,
+      cachedFieldsAndFragmentNames,
+      fragment,
+    ); // Do not compare a fragment's fieldMap to itself.
+
+  if (fieldMap === fieldMap2) {
+    return;
+  } // (D) First collect any conflicts between the provided collection of fields
+  // and the collection of fields represented by the given fragment.
+
+  collectConflictsBetween(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    areMutuallyExclusive,
+    fieldMap,
+    fieldMap2,
+  ); // (E) Then collect any conflicts between the provided collection of fields
+  // and any fragment names found in the given fragment.
+
+  for (const referencedFragmentName of referencedFragmentNames) {
+    // Memoize so two fragments are not compared for conflicts more than once.
+    if (
+      comparedFragmentPairs.has(
+        referencedFragmentName,
+        fragmentName,
+        areMutuallyExclusive,
+      )
+    ) {
+      continue;
+    }
+
+    comparedFragmentPairs.add(
+      referencedFragmentName,
+      fragmentName,
+      areMutuallyExclusive,
+    );
+    collectConflictsBetweenFieldsAndFragment(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fieldMap,
+      referencedFragmentName,
+    );
+  }
+} // Collect all conflicts found between two fragments, including via spreading in
+// any nested fragments.
+
+function collectConflictsBetweenFragments(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  areMutuallyExclusive,
+  fragmentName1,
+  fragmentName2,
+) {
+  // No need to compare a fragment to itself.
+  if (fragmentName1 === fragmentName2) {
+    return;
+  } // Memoize so two fragments are not compared for conflicts more than once.
+
+  if (
+    comparedFragmentPairs.has(
+      fragmentName1,
+      fragmentName2,
+      areMutuallyExclusive,
+    )
+  ) {
+    return;
+  }
+
+  comparedFragmentPairs.add(fragmentName1, fragmentName2, areMutuallyExclusive);
+  const fragment1 = context.getFragment(fragmentName1);
+  const fragment2 = context.getFragment(fragmentName2);
+
+  if (!fragment1 || !fragment2) {
+    return;
+  }
+
+  const [fieldMap1, referencedFragmentNames1] =
+    getReferencedFieldsAndFragmentNames(
+      context,
+      cachedFieldsAndFragmentNames,
+      fragment1,
+    );
+  const [fieldMap2, referencedFragmentNames2] =
+    getReferencedFieldsAndFragmentNames(
+      context,
+      cachedFieldsAndFragmentNames,
+      fragment2,
+    ); // (F) First, collect all conflicts between these two collections of fields
+  // (not including any nested fragments).
+
+  collectConflictsBetween(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    areMutuallyExclusive,
+    fieldMap1,
+    fieldMap2,
+  ); // (G) Then collect conflicts between the first fragment and any nested
+  // fragments spread in the second fragment.
+
+  for (const referencedFragmentName2 of referencedFragmentNames2) {
+    collectConflictsBetweenFragments(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fragmentName1,
+      referencedFragmentName2,
+    );
+  } // (G) Then collect conflicts between the second fragment and any nested
+  // fragments spread in the first fragment.
+
+  for (const referencedFragmentName1 of referencedFragmentNames1) {
+    collectConflictsBetweenFragments(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      referencedFragmentName1,
+      fragmentName2,
+    );
+  }
+} // Find all conflicts found between two selection sets, including those found
+// via spreading in fragments. Called when determining if conflicts exist
+// between the sub-fields of two overlapping fields.
+
+function findConflictsBetweenSubSelectionSets(
+  context,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  areMutuallyExclusive,
+  parentType1,
+  selectionSet1,
+  parentType2,
+  selectionSet2,
+) {
+  const conflicts = [];
+  const [fieldMap1, fragmentNames1] = getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    parentType1,
+    selectionSet1,
+  );
+  const [fieldMap2, fragmentNames2] = getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    parentType2,
+    selectionSet2,
+  ); // (H) First, collect all conflicts between these two collections of field.
+
+  collectConflictsBetween(
+    context,
+    conflicts,
+    cachedFieldsAndFragmentNames,
+    comparedFragmentPairs,
+    areMutuallyExclusive,
+    fieldMap1,
+    fieldMap2,
+  ); // (I) Then collect conflicts between the first collection of fields and
+  // those referenced by each fragment name associated with the second.
+
+  for (const fragmentName2 of fragmentNames2) {
+    collectConflictsBetweenFieldsAndFragment(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fieldMap1,
+      fragmentName2,
+    );
+  } // (I) Then collect conflicts between the second collection of fields and
+  // those referenced by each fragment name associated with the first.
+
+  for (const fragmentName1 of fragmentNames1) {
+    collectConflictsBetweenFieldsAndFragment(
+      context,
+      conflicts,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      fieldMap2,
+      fragmentName1,
+    );
+  } // (J) Also collect conflicts between any fragment names by the first and
+  // fragment names by the second. This compares each item in the first set of
+  // names to each item in the second set of names.
+
+  for (const fragmentName1 of fragmentNames1) {
+    for (const fragmentName2 of fragmentNames2) {
+      collectConflictsBetweenFragments(
+        context,
+        conflicts,
+        cachedFieldsAndFragmentNames,
+        comparedFragmentPairs,
+        areMutuallyExclusive,
+        fragmentName1,
+        fragmentName2,
+      );
+    }
+  }
+
+  return conflicts;
+} // Collect all Conflicts "within" one collection of fields.
+
+function collectConflictsWithin(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  fieldMap,
+) {
+  // A field map is a keyed collection, where each key represents a response
+  // name and the value at that key is a list of all fields which provide that
+  // response name. For every response name, if there are multiple fields, they
+  // must be compared to find a potential conflict.
+  for (const [responseName, fields] of Object.entries(fieldMap)) {
+    // This compares every field in the list to every other field in this list
+    // (except to itself). If the list only has one item, nothing needs to
+    // be compared.
+    if (fields.length > 1) {
+      for (let i = 0; i < fields.length; i++) {
+        for (let j = i + 1; j < fields.length; j++) {
+          const conflict = findConflict(
+            context,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            false, // within one collection is never mutually exclusive
+            responseName,
+            fields[i],
+            fields[j],
+          );
+
+          if (conflict) {
+            conflicts.push(conflict);
+          }
+        }
+      }
+    }
+  }
+} // Collect all Conflicts between two collections of fields. This is similar to,
+// but different from the `collectConflictsWithin` function above. This check
+// assumes that `collectConflictsWithin` has already been called on each
+// provided collection of fields. This is true because this validator traverses
+// each individual selection set.
+
+function collectConflictsBetween(
+  context,
+  conflicts,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  parentFieldsAreMutuallyExclusive,
+  fieldMap1,
+  fieldMap2,
+) {
+  // A field map is a keyed collection, where each key represents a response
+  // name and the value at that key is a list of all fields which provide that
+  // response name. For any response name which appears in both provided field
+  // maps, each field from the first field map must be compared to every field
+  // in the second field map to find potential conflicts.
+  for (const [responseName, fields1] of Object.entries(fieldMap1)) {
+    const fields2 = fieldMap2[responseName];
+
+    if (fields2) {
+      for (const field1 of fields1) {
+        for (const field2 of fields2) {
+          const conflict = findConflict(
+            context,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            parentFieldsAreMutuallyExclusive,
+            responseName,
+            field1,
+            field2,
+          );
+
+          if (conflict) {
+            conflicts.push(conflict);
+          }
+        }
+      }
+    }
+  }
+} // Determines if there is a conflict between two particular fields, including
+// comparing their sub-fields.
+
+function findConflict(
+  context,
+  cachedFieldsAndFragmentNames,
+  comparedFragmentPairs,
+  parentFieldsAreMutuallyExclusive,
+  responseName,
+  field1,
+  field2,
+) {
+  const [parentType1, node1, def1] = field1;
+  const [parentType2, node2, def2] = field2; // If it is known that two fields could not possibly apply at the same
+  // time, due to the parent types, then it is safe to permit them to diverge
+  // in aliased field or arguments used as they will not present any ambiguity
+  // by differing.
+  // It is known that two parent types could never overlap if they are
+  // different Object types. Interface or Union types might overlap - if not
+  // in the current state of the schema, then perhaps in some future version,
+  // thus may not safely diverge.
+
+  const areMutuallyExclusive =
+    parentFieldsAreMutuallyExclusive ||
+    (parentType1 !== parentType2 &&
+      isObjectType(parentType1) &&
+      isObjectType(parentType2));
+
+  if (!areMutuallyExclusive) {
+    // Two aliases must refer to the same field.
+    const name1 = node1.name.value;
+    const name2 = node2.name.value;
+
+    if (name1 !== name2) {
+      return [
+        [responseName, `"${name1}" and "${name2}" are different fields`],
+        [node1],
+        [node2],
+      ];
+    } // Two field calls must have the same arguments.
+
+    if (!sameArguments(node1, node2)) {
+      return [
+        [responseName, 'they have differing arguments'],
+        [node1],
+        [node2],
+      ];
+    }
+  } // The return type for each field.
+
+  const type1 = def1 === null || def1 === void 0 ? void 0 : def1.type;
+  const type2 = def2 === null || def2 === void 0 ? void 0 : def2.type;
+
+  if (type1 && type2 && doTypesConflict(type1, type2)) {
+    return [
+      [
+        responseName,
+        `they return conflicting types "${inspect(type1)}" and "${inspect(
+          type2,
+        )}"`,
+      ],
+      [node1],
+      [node2],
+    ];
+  } // Collect and compare sub-fields. Use the same "visited fragment names" list
+  // for both collections so fields in a fragment reference are never
+  // compared to themselves.
+
+  const selectionSet1 = node1.selectionSet;
+  const selectionSet2 = node2.selectionSet;
+
+  if (selectionSet1 && selectionSet2) {
+    const conflicts = findConflictsBetweenSubSelectionSets(
+      context,
+      cachedFieldsAndFragmentNames,
+      comparedFragmentPairs,
+      areMutuallyExclusive,
+      getNamedType(type1),
+      selectionSet1,
+      getNamedType(type2),
+      selectionSet2,
+    );
+    return subfieldConflicts(conflicts, responseName, node1, node2);
+  }
+}
+
+function sameArguments(node1, node2) {
+  const args1 = node1.arguments;
+  const args2 = node2.arguments;
+
+  if (args1 === undefined || args1.length === 0) {
+    return args2 === undefined || args2.length === 0;
+  }
+
+  if (args2 === undefined || args2.length === 0) {
+    return false;
+  }
+  /* c8 ignore next */
+
+  if (args1.length !== args2.length) {
+    /* c8 ignore next */
+    return false;
+    /* c8 ignore next */
+  }
+
+  const values2 = new Map(args2.map(({ name, value }) => [name.value, value]));
+  return args1.every((arg1) => {
+    const value1 = arg1.value;
+    const value2 = values2.get(arg1.name.value);
+
+    if (value2 === undefined) {
+      return false;
+    }
+
+    return stringifyValue(value1) === stringifyValue(value2);
+  });
+}
+
+function stringifyValue(value) {
+  return print(sortValueNode(value));
+} // Two types conflict if both types could not apply to a value simultaneously.
+// Composite types are ignored as their individual field types will be compared
+// later recursively. However List and Non-Null types must match.
+
+function doTypesConflict(type1, type2) {
+  if (isListType(type1)) {
+    return isListType(type2)
+      ? doTypesConflict(type1.ofType, type2.ofType)
+      : true;
+  }
+
+  if (isListType(type2)) {
+    return true;
+  }
+
+  if (isNonNullType(type1)) {
+    return isNonNullType(type2)
+      ? doTypesConflict(type1.ofType, type2.ofType)
+      : true;
+  }
+
+  if (isNonNullType(type2)) {
+    return true;
+  }
+
+  if (isLeafType(type1) || isLeafType(type2)) {
+    return type1 !== type2;
+  }
+
+  return false;
+} // Given a selection set, return the collection of fields (a mapping of response
+// name to field nodes and definitions) as well as a list of fragment names
+// referenced via fragment spreads.
+
+function getFieldsAndFragmentNames(
+  context,
+  cachedFieldsAndFragmentNames,
+  parentType,
+  selectionSet,
+) {
+  const cached = cachedFieldsAndFragmentNames.get(selectionSet);
+
+  if (cached) {
+    return cached;
+  }
+
+  const nodeAndDefs = Object.create(null);
+  const fragmentNames = Object.create(null);
+
+  _collectFieldsAndFragmentNames(
+    context,
+    parentType,
+    selectionSet,
+    nodeAndDefs,
+    fragmentNames,
+  );
+
+  const result = [nodeAndDefs, Object.keys(fragmentNames)];
+  cachedFieldsAndFragmentNames.set(selectionSet, result);
+  return result;
+} // Given a reference to a fragment, return the represented collection of fields
+// as well as a list of nested fragment names referenced via fragment spreads.
+
+function getReferencedFieldsAndFragmentNames(
+  context,
+  cachedFieldsAndFragmentNames,
+  fragment,
+) {
+  // Short-circuit building a type from the node if possible.
+  const cached = cachedFieldsAndFragmentNames.get(fragment.selectionSet);
+
+  if (cached) {
+    return cached;
+  }
+
+  const fragmentType = typeFromAST(context.getSchema(), fragment.typeCondition);
+  return getFieldsAndFragmentNames(
+    context,
+    cachedFieldsAndFragmentNames,
+    fragmentType,
+    fragment.selectionSet,
+  );
+}
+
+function _collectFieldsAndFragmentNames(
+  context,
+  parentType,
+  selectionSet,
+  nodeAndDefs,
+  fragmentNames,
+) {
+  for (const selection of selectionSet.selections) {
+    switch (selection.kind) {
+      case Kind.FIELD: {
+        const fieldName = selection.name.value;
+        let fieldDef;
+
+        if (isObjectType(parentType) || isInterfaceType(parentType)) {
+          fieldDef = parentType.getFields()[fieldName];
+        }
+
+        const responseName = selection.alias
+          ? selection.alias.value
+          : fieldName;
+
+        if (!nodeAndDefs[responseName]) {
+          nodeAndDefs[responseName] = [];
+        }
+
+        nodeAndDefs[responseName].push([parentType, selection, fieldDef]);
+        break;
+      }
+
+      case Kind.FRAGMENT_SPREAD:
+        fragmentNames[selection.name.value] = true;
+        break;
+
+      case Kind.INLINE_FRAGMENT: {
+        const typeCondition = selection.typeCondition;
+        const inlineFragmentType = typeCondition
+          ? typeFromAST(context.getSchema(), typeCondition)
+          : parentType;
+
+        _collectFieldsAndFragmentNames(
+          context,
+          inlineFragmentType,
+          selection.selectionSet,
+          nodeAndDefs,
+          fragmentNames,
+        );
+
+        break;
+      }
+    }
+  }
+} // Given a series of Conflicts which occurred between two sub-fields, generate
+// a single Conflict.
+
+function subfieldConflicts(conflicts, responseName, node1, node2) {
+  if (conflicts.length > 0) {
+    return [
+      [responseName, conflicts.map(([reason]) => reason)],
+      [node1, ...conflicts.map(([, fields1]) => fields1).flat()],
+      [node2, ...conflicts.map(([, , fields2]) => fields2).flat()],
+    ];
+  }
+}
+/**
+ * A way to keep track of pairs of things when the ordering of the pair does not matter.
+ */
+
+class PairSet {
+  constructor() {
+    this._data = new Map();
+  }
+
+  has(a, b, areMutuallyExclusive) {
+    var _this$_data$get;
+
+    const [key1, key2] = a < b ? [a, b] : [b, a];
+    const result =
+      (_this$_data$get = this._data.get(key1)) === null ||
+      _this$_data$get === void 0
+        ? void 0
+        : _this$_data$get.get(key2);
+
+    if (result === undefined) {
+      return false;
+    } // areMutuallyExclusive being false is a superset of being true, hence if
+    // we want to know if this PairSet "has" these two with no exclusivity,
+    // we have to ensure it was added as such.
+
+    return areMutuallyExclusive ? true : areMutuallyExclusive === result;
+  }
+
+  add(a, b, areMutuallyExclusive) {
+    const [key1, key2] = a < b ? [a, b] : [b, a];
+
+    const map = this._data.get(key1);
+
+    if (map === undefined) {
+      this._data.set(key1, new Map([[key2, areMutuallyExclusive]]));
+    } else {
+      map.set(key2, areMutuallyExclusive);
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/PossibleFragmentSpreadsRule.d.ts

@@ -0,0 +1,12 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Possible fragment spread
+ *
+ * A fragment spread is only valid if the type condition could ever possibly
+ * be true: if there is a non-empty intersection of the possible parent types,
+ * and possible types which pass the type condition.
+ */
+export declare function PossibleFragmentSpreadsRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/PossibleFragmentSpreadsRule.js

@@ -0,0 +1,95 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.PossibleFragmentSpreadsRule = PossibleFragmentSpreadsRule;
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _definition = require('../../type/definition.js');
+
+var _typeComparators = require('../../utilities/typeComparators.js');
+
+var _typeFromAST = require('../../utilities/typeFromAST.js');
+
+/**
+ * Possible fragment spread
+ *
+ * A fragment spread is only valid if the type condition could ever possibly
+ * be true: if there is a non-empty intersection of the possible parent types,
+ * and possible types which pass the type condition.
+ */
+function PossibleFragmentSpreadsRule(context) {
+  return {
+    InlineFragment(node) {
+      const fragType = context.getType();
+      const parentType = context.getParentType();
+
+      if (
+        (0, _definition.isCompositeType)(fragType) &&
+        (0, _definition.isCompositeType)(parentType) &&
+        !(0, _typeComparators.doTypesOverlap)(
+          context.getSchema(),
+          fragType,
+          parentType,
+        )
+      ) {
+        const parentTypeStr = (0, _inspect.inspect)(parentType);
+        const fragTypeStr = (0, _inspect.inspect)(fragType);
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Fragment cannot be spread here as objects of type "${parentTypeStr}" can never be of type "${fragTypeStr}".`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+
+    FragmentSpread(node) {
+      const fragName = node.name.value;
+      const fragType = getFragmentType(context, fragName);
+      const parentType = context.getParentType();
+
+      if (
+        fragType &&
+        parentType &&
+        !(0, _typeComparators.doTypesOverlap)(
+          context.getSchema(),
+          fragType,
+          parentType,
+        )
+      ) {
+        const parentTypeStr = (0, _inspect.inspect)(parentType);
+        const fragTypeStr = (0, _inspect.inspect)(fragType);
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Fragment "${fragName}" cannot be spread here as objects of type "${parentTypeStr}" can never be of type "${fragTypeStr}".`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+function getFragmentType(context, name) {
+  const frag = context.getFragment(name);
+
+  if (frag) {
+    const type = (0, _typeFromAST.typeFromAST)(
+      context.getSchema(),
+      frag.typeCondition,
+    );
+
+    if ((0, _definition.isCompositeType)(type)) {
+      return type;
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/PossibleFragmentSpreadsRule.mjs

@@ -0,0 +1,73 @@
+import { inspect } from '../../jsutils/inspect.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { isCompositeType } from '../../type/definition.mjs';
+import { doTypesOverlap } from '../../utilities/typeComparators.mjs';
+import { typeFromAST } from '../../utilities/typeFromAST.mjs';
+
+/**
+ * Possible fragment spread
+ *
+ * A fragment spread is only valid if the type condition could ever possibly
+ * be true: if there is a non-empty intersection of the possible parent types,
+ * and possible types which pass the type condition.
+ */
+export function PossibleFragmentSpreadsRule(context) {
+  return {
+    InlineFragment(node) {
+      const fragType = context.getType();
+      const parentType = context.getParentType();
+
+      if (
+        isCompositeType(fragType) &&
+        isCompositeType(parentType) &&
+        !doTypesOverlap(context.getSchema(), fragType, parentType)
+      ) {
+        const parentTypeStr = inspect(parentType);
+        const fragTypeStr = inspect(fragType);
+        context.reportError(
+          new GraphQLError(
+            `Fragment cannot be spread here as objects of type "${parentTypeStr}" can never be of type "${fragTypeStr}".`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+
+    FragmentSpread(node) {
+      const fragName = node.name.value;
+      const fragType = getFragmentType(context, fragName);
+      const parentType = context.getParentType();
+
+      if (
+        fragType &&
+        parentType &&
+        !doTypesOverlap(context.getSchema(), fragType, parentType)
+      ) {
+        const parentTypeStr = inspect(parentType);
+        const fragTypeStr = inspect(fragType);
+        context.reportError(
+          new GraphQLError(
+            `Fragment "${fragName}" cannot be spread here as objects of type "${parentTypeStr}" can never be of type "${fragTypeStr}".`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+function getFragmentType(context, name) {
+  const frag = context.getFragment(name);
+
+  if (frag) {
+    const type = typeFromAST(context.getSchema(), frag.typeCondition);
+
+    if (isCompositeType(type)) {
+      return type;
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/PossibleTypeExtensionsRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Possible type extension
+ *
+ * A type extension is only valid if the type is defined and has the same kind.
+ */
+export declare function PossibleTypeExtensionsRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/PossibleTypeExtensionsRule.js

@@ -0,0 +1,171 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.PossibleTypeExtensionsRule = PossibleTypeExtensionsRule;
+
+var _didYouMean = require('../../jsutils/didYouMean.js');
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _invariant = require('../../jsutils/invariant.js');
+
+var _suggestionList = require('../../jsutils/suggestionList.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _predicates = require('../../language/predicates.js');
+
+var _definition = require('../../type/definition.js');
+
+/**
+ * Possible type extension
+ *
+ * A type extension is only valid if the type is defined and has the same kind.
+ */
+function PossibleTypeExtensionsRule(context) {
+  const schema = context.getSchema();
+  const definedTypes = Object.create(null);
+
+  for (const def of context.getDocument().definitions) {
+    if ((0, _predicates.isTypeDefinitionNode)(def)) {
+      definedTypes[def.name.value] = def;
+    }
+  }
+
+  return {
+    ScalarTypeExtension: checkExtension,
+    ObjectTypeExtension: checkExtension,
+    InterfaceTypeExtension: checkExtension,
+    UnionTypeExtension: checkExtension,
+    EnumTypeExtension: checkExtension,
+    InputObjectTypeExtension: checkExtension,
+  };
+
+  function checkExtension(node) {
+    const typeName = node.name.value;
+    const defNode = definedTypes[typeName];
+    const existingType =
+      schema === null || schema === void 0 ? void 0 : schema.getType(typeName);
+    let expectedKind;
+
+    if (defNode) {
+      expectedKind = defKindToExtKind[defNode.kind];
+    } else if (existingType) {
+      expectedKind = typeToExtKind(existingType);
+    }
+
+    if (expectedKind) {
+      if (expectedKind !== node.kind) {
+        const kindStr = extensionKindToTypeName(node.kind);
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Cannot extend non-${kindStr} type "${typeName}".`,
+            {
+              nodes: defNode ? [defNode, node] : node,
+            },
+          ),
+        );
+      }
+    } else {
+      const allTypeNames = Object.keys({
+        ...definedTypes,
+        ...(schema === null || schema === void 0
+          ? void 0
+          : schema.getTypeMap()),
+      });
+      const suggestedTypes = (0, _suggestionList.suggestionList)(
+        typeName,
+        allTypeNames,
+      );
+      context.reportError(
+        new _GraphQLError.GraphQLError(
+          `Cannot extend type "${typeName}" because it is not defined.` +
+            (0, _didYouMean.didYouMean)(suggestedTypes),
+          {
+            nodes: node.name,
+          },
+        ),
+      );
+    }
+  }
+}
+
+const defKindToExtKind = {
+  [_kinds.Kind.SCALAR_TYPE_DEFINITION]: _kinds.Kind.SCALAR_TYPE_EXTENSION,
+  [_kinds.Kind.OBJECT_TYPE_DEFINITION]: _kinds.Kind.OBJECT_TYPE_EXTENSION,
+  [_kinds.Kind.INTERFACE_TYPE_DEFINITION]: _kinds.Kind.INTERFACE_TYPE_EXTENSION,
+  [_kinds.Kind.UNION_TYPE_DEFINITION]: _kinds.Kind.UNION_TYPE_EXTENSION,
+  [_kinds.Kind.ENUM_TYPE_DEFINITION]: _kinds.Kind.ENUM_TYPE_EXTENSION,
+  [_kinds.Kind.INPUT_OBJECT_TYPE_DEFINITION]:
+    _kinds.Kind.INPUT_OBJECT_TYPE_EXTENSION,
+};
+
+function typeToExtKind(type) {
+  if ((0, _definition.isScalarType)(type)) {
+    return _kinds.Kind.SCALAR_TYPE_EXTENSION;
+  }
+
+  if ((0, _definition.isObjectType)(type)) {
+    return _kinds.Kind.OBJECT_TYPE_EXTENSION;
+  }
+
+  if ((0, _definition.isInterfaceType)(type)) {
+    return _kinds.Kind.INTERFACE_TYPE_EXTENSION;
+  }
+
+  if ((0, _definition.isUnionType)(type)) {
+    return _kinds.Kind.UNION_TYPE_EXTENSION;
+  }
+
+  if ((0, _definition.isEnumType)(type)) {
+    return _kinds.Kind.ENUM_TYPE_EXTENSION;
+  }
+
+  if ((0, _definition.isInputObjectType)(type)) {
+    return _kinds.Kind.INPUT_OBJECT_TYPE_EXTENSION;
+  }
+  /* c8 ignore next 3 */
+  // Not reachable. All possible types have been considered
+
+  false ||
+    (0, _invariant.invariant)(
+      false,
+      'Unexpected type: ' + (0, _inspect.inspect)(type),
+    );
+}
+
+function extensionKindToTypeName(kind) {
+  switch (kind) {
+    case _kinds.Kind.SCALAR_TYPE_EXTENSION:
+      return 'scalar';
+
+    case _kinds.Kind.OBJECT_TYPE_EXTENSION:
+      return 'object';
+
+    case _kinds.Kind.INTERFACE_TYPE_EXTENSION:
+      return 'interface';
+
+    case _kinds.Kind.UNION_TYPE_EXTENSION:
+      return 'union';
+
+    case _kinds.Kind.ENUM_TYPE_EXTENSION:
+      return 'enum';
+
+    case _kinds.Kind.INPUT_OBJECT_TYPE_EXTENSION:
+      return 'input object';
+    // Not reachable. All possible types have been considered
+
+    /* c8 ignore next */
+
+    default:
+      false ||
+        (0, _invariant.invariant)(
+          false,
+          'Unexpected kind: ' + (0, _inspect.inspect)(kind),
+        );
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/PossibleTypeExtensionsRule.mjs

@@ -0,0 +1,148 @@
+import { didYouMean } from '../../jsutils/didYouMean.mjs';
+import { inspect } from '../../jsutils/inspect.mjs';
+import { invariant } from '../../jsutils/invariant.mjs';
+import { suggestionList } from '../../jsutils/suggestionList.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import { isTypeDefinitionNode } from '../../language/predicates.mjs';
+import {
+  isEnumType,
+  isInputObjectType,
+  isInterfaceType,
+  isObjectType,
+  isScalarType,
+  isUnionType,
+} from '../../type/definition.mjs';
+
+/**
+ * Possible type extension
+ *
+ * A type extension is only valid if the type is defined and has the same kind.
+ */
+export function PossibleTypeExtensionsRule(context) {
+  const schema = context.getSchema();
+  const definedTypes = Object.create(null);
+
+  for (const def of context.getDocument().definitions) {
+    if (isTypeDefinitionNode(def)) {
+      definedTypes[def.name.value] = def;
+    }
+  }
+
+  return {
+    ScalarTypeExtension: checkExtension,
+    ObjectTypeExtension: checkExtension,
+    InterfaceTypeExtension: checkExtension,
+    UnionTypeExtension: checkExtension,
+    EnumTypeExtension: checkExtension,
+    InputObjectTypeExtension: checkExtension,
+  };
+
+  function checkExtension(node) {
+    const typeName = node.name.value;
+    const defNode = definedTypes[typeName];
+    const existingType =
+      schema === null || schema === void 0 ? void 0 : schema.getType(typeName);
+    let expectedKind;
+
+    if (defNode) {
+      expectedKind = defKindToExtKind[defNode.kind];
+    } else if (existingType) {
+      expectedKind = typeToExtKind(existingType);
+    }
+
+    if (expectedKind) {
+      if (expectedKind !== node.kind) {
+        const kindStr = extensionKindToTypeName(node.kind);
+        context.reportError(
+          new GraphQLError(`Cannot extend non-${kindStr} type "${typeName}".`, {
+            nodes: defNode ? [defNode, node] : node,
+          }),
+        );
+      }
+    } else {
+      const allTypeNames = Object.keys({
+        ...definedTypes,
+        ...(schema === null || schema === void 0
+          ? void 0
+          : schema.getTypeMap()),
+      });
+      const suggestedTypes = suggestionList(typeName, allTypeNames);
+      context.reportError(
+        new GraphQLError(
+          `Cannot extend type "${typeName}" because it is not defined.` +
+            didYouMean(suggestedTypes),
+          {
+            nodes: node.name,
+          },
+        ),
+      );
+    }
+  }
+}
+const defKindToExtKind = {
+  [Kind.SCALAR_TYPE_DEFINITION]: Kind.SCALAR_TYPE_EXTENSION,
+  [Kind.OBJECT_TYPE_DEFINITION]: Kind.OBJECT_TYPE_EXTENSION,
+  [Kind.INTERFACE_TYPE_DEFINITION]: Kind.INTERFACE_TYPE_EXTENSION,
+  [Kind.UNION_TYPE_DEFINITION]: Kind.UNION_TYPE_EXTENSION,
+  [Kind.ENUM_TYPE_DEFINITION]: Kind.ENUM_TYPE_EXTENSION,
+  [Kind.INPUT_OBJECT_TYPE_DEFINITION]: Kind.INPUT_OBJECT_TYPE_EXTENSION,
+};
+
+function typeToExtKind(type) {
+  if (isScalarType(type)) {
+    return Kind.SCALAR_TYPE_EXTENSION;
+  }
+
+  if (isObjectType(type)) {
+    return Kind.OBJECT_TYPE_EXTENSION;
+  }
+
+  if (isInterfaceType(type)) {
+    return Kind.INTERFACE_TYPE_EXTENSION;
+  }
+
+  if (isUnionType(type)) {
+    return Kind.UNION_TYPE_EXTENSION;
+  }
+
+  if (isEnumType(type)) {
+    return Kind.ENUM_TYPE_EXTENSION;
+  }
+
+  if (isInputObjectType(type)) {
+    return Kind.INPUT_OBJECT_TYPE_EXTENSION;
+  }
+  /* c8 ignore next 3 */
+  // Not reachable. All possible types have been considered
+
+  false || invariant(false, 'Unexpected type: ' + inspect(type));
+}
+
+function extensionKindToTypeName(kind) {
+  switch (kind) {
+    case Kind.SCALAR_TYPE_EXTENSION:
+      return 'scalar';
+
+    case Kind.OBJECT_TYPE_EXTENSION:
+      return 'object';
+
+    case Kind.INTERFACE_TYPE_EXTENSION:
+      return 'interface';
+
+    case Kind.UNION_TYPE_EXTENSION:
+      return 'union';
+
+    case Kind.ENUM_TYPE_EXTENSION:
+      return 'enum';
+
+    case Kind.INPUT_OBJECT_TYPE_EXTENSION:
+      return 'input object';
+    // Not reachable. All possible types have been considered
+
+    /* c8 ignore next */
+
+    default:
+      false || invariant(false, 'Unexpected kind: ' + inspect(kind));
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/ProvidedRequiredArgumentsRule.d.ts

@@ -0,0 +1,20 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type {
+  SDLValidationContext,
+  ValidationContext,
+} from '../ValidationContext';
+/**
+ * Provided required arguments
+ *
+ * A field or directive is only valid if all required (non-null without a
+ * default value) field arguments have been provided.
+ */
+export declare function ProvidedRequiredArgumentsRule(
+  context: ValidationContext,
+): ASTVisitor;
+/**
+ * @internal
+ */
+export declare function ProvidedRequiredArgumentsOnDirectivesRule(
+  context: ValidationContext | SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/ProvidedRequiredArgumentsRule.js

@@ -0,0 +1,162 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.ProvidedRequiredArgumentsOnDirectivesRule =
+  ProvidedRequiredArgumentsOnDirectivesRule;
+exports.ProvidedRequiredArgumentsRule = ProvidedRequiredArgumentsRule;
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _keyMap = require('../../jsutils/keyMap.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _printer = require('../../language/printer.js');
+
+var _definition = require('../../type/definition.js');
+
+var _directives = require('../../type/directives.js');
+
+/**
+ * Provided required arguments
+ *
+ * A field or directive is only valid if all required (non-null without a
+ * default value) field arguments have been provided.
+ */
+function ProvidedRequiredArgumentsRule(context) {
+  return {
+    // eslint-disable-next-line new-cap
+    ...ProvidedRequiredArgumentsOnDirectivesRule(context),
+    Field: {
+      // Validate on leave to allow for deeper errors to appear first.
+      leave(fieldNode) {
+        var _fieldNode$arguments;
+
+        const fieldDef = context.getFieldDef();
+
+        if (!fieldDef) {
+          return false;
+        }
+
+        const providedArgs = new Set( // FIXME: https://github.com/graphql/graphql-js/issues/2203
+          /* c8 ignore next */
+          (_fieldNode$arguments = fieldNode.arguments) === null ||
+          _fieldNode$arguments === void 0
+            ? void 0
+            : _fieldNode$arguments.map((arg) => arg.name.value),
+        );
+
+        for (const argDef of fieldDef.args) {
+          if (
+            !providedArgs.has(argDef.name) &&
+            (0, _definition.isRequiredArgument)(argDef)
+          ) {
+            const argTypeStr = (0, _inspect.inspect)(argDef.type);
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                `Field "${fieldDef.name}" argument "${argDef.name}" of type "${argTypeStr}" is required, but it was not provided.`,
+                {
+                  nodes: fieldNode,
+                },
+              ),
+            );
+          }
+        }
+      },
+    },
+  };
+}
+/**
+ * @internal
+ */
+
+function ProvidedRequiredArgumentsOnDirectivesRule(context) {
+  var _schema$getDirectives;
+
+  const requiredArgsMap = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives =
+    (_schema$getDirectives =
+      schema === null || schema === void 0
+        ? void 0
+        : schema.getDirectives()) !== null && _schema$getDirectives !== void 0
+      ? _schema$getDirectives
+      : _directives.specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    requiredArgsMap[directive.name] = (0, _keyMap.keyMap)(
+      directive.args.filter(_definition.isRequiredArgument),
+      (arg) => arg.name,
+    );
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === _kinds.Kind.DIRECTIVE_DEFINITION) {
+      var _def$arguments;
+
+      // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const argNodes =
+        (_def$arguments = def.arguments) !== null && _def$arguments !== void 0
+          ? _def$arguments
+          : [];
+      requiredArgsMap[def.name.value] = (0, _keyMap.keyMap)(
+        argNodes.filter(isRequiredArgumentNode),
+        (arg) => arg.name.value,
+      );
+    }
+  }
+
+  return {
+    Directive: {
+      // Validate on leave to allow for deeper errors to appear first.
+      leave(directiveNode) {
+        const directiveName = directiveNode.name.value;
+        const requiredArgs = requiredArgsMap[directiveName];
+
+        if (requiredArgs) {
+          var _directiveNode$argume;
+
+          // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+          /* c8 ignore next */
+          const argNodes =
+            (_directiveNode$argume = directiveNode.arguments) !== null &&
+            _directiveNode$argume !== void 0
+              ? _directiveNode$argume
+              : [];
+          const argNodeMap = new Set(argNodes.map((arg) => arg.name.value));
+
+          for (const [argName, argDef] of Object.entries(requiredArgs)) {
+            if (!argNodeMap.has(argName)) {
+              const argType = (0, _definition.isType)(argDef.type)
+                ? (0, _inspect.inspect)(argDef.type)
+                : (0, _printer.print)(argDef.type);
+              context.reportError(
+                new _GraphQLError.GraphQLError(
+                  `Directive "@${directiveName}" argument "${argName}" of type "${argType}" is required, but it was not provided.`,
+                  {
+                    nodes: directiveNode,
+                  },
+                ),
+              );
+            }
+          }
+        }
+      },
+    },
+  };
+}
+
+function isRequiredArgumentNode(arg) {
+  return (
+    arg.type.kind === _kinds.Kind.NON_NULL_TYPE && arg.defaultValue == null
+  );
+}

graphql-subscription/node_modules/graphql/validation/rules/ProvidedRequiredArgumentsRule.mjs

@@ -0,0 +1,142 @@
+import { inspect } from '../../jsutils/inspect.mjs';
+import { keyMap } from '../../jsutils/keyMap.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import { print } from '../../language/printer.mjs';
+import { isRequiredArgument, isType } from '../../type/definition.mjs';
+import { specifiedDirectives } from '../../type/directives.mjs';
+
+/**
+ * Provided required arguments
+ *
+ * A field or directive is only valid if all required (non-null without a
+ * default value) field arguments have been provided.
+ */
+export function ProvidedRequiredArgumentsRule(context) {
+  return {
+    // eslint-disable-next-line new-cap
+    ...ProvidedRequiredArgumentsOnDirectivesRule(context),
+    Field: {
+      // Validate on leave to allow for deeper errors to appear first.
+      leave(fieldNode) {
+        var _fieldNode$arguments;
+
+        const fieldDef = context.getFieldDef();
+
+        if (!fieldDef) {
+          return false;
+        }
+
+        const providedArgs = new Set( // FIXME: https://github.com/graphql/graphql-js/issues/2203
+          /* c8 ignore next */
+          (_fieldNode$arguments = fieldNode.arguments) === null ||
+          _fieldNode$arguments === void 0
+            ? void 0
+            : _fieldNode$arguments.map((arg) => arg.name.value),
+        );
+
+        for (const argDef of fieldDef.args) {
+          if (!providedArgs.has(argDef.name) && isRequiredArgument(argDef)) {
+            const argTypeStr = inspect(argDef.type);
+            context.reportError(
+              new GraphQLError(
+                `Field "${fieldDef.name}" argument "${argDef.name}" of type "${argTypeStr}" is required, but it was not provided.`,
+                {
+                  nodes: fieldNode,
+                },
+              ),
+            );
+          }
+        }
+      },
+    },
+  };
+}
+/**
+ * @internal
+ */
+
+export function ProvidedRequiredArgumentsOnDirectivesRule(context) {
+  var _schema$getDirectives;
+
+  const requiredArgsMap = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives =
+    (_schema$getDirectives =
+      schema === null || schema === void 0
+        ? void 0
+        : schema.getDirectives()) !== null && _schema$getDirectives !== void 0
+      ? _schema$getDirectives
+      : specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    requiredArgsMap[directive.name] = keyMap(
+      directive.args.filter(isRequiredArgument),
+      (arg) => arg.name,
+    );
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === Kind.DIRECTIVE_DEFINITION) {
+      var _def$arguments;
+
+      // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const argNodes =
+        (_def$arguments = def.arguments) !== null && _def$arguments !== void 0
+          ? _def$arguments
+          : [];
+      requiredArgsMap[def.name.value] = keyMap(
+        argNodes.filter(isRequiredArgumentNode),
+        (arg) => arg.name.value,
+      );
+    }
+  }
+
+  return {
+    Directive: {
+      // Validate on leave to allow for deeper errors to appear first.
+      leave(directiveNode) {
+        const directiveName = directiveNode.name.value;
+        const requiredArgs = requiredArgsMap[directiveName];
+
+        if (requiredArgs) {
+          var _directiveNode$argume;
+
+          // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+          /* c8 ignore next */
+          const argNodes =
+            (_directiveNode$argume = directiveNode.arguments) !== null &&
+            _directiveNode$argume !== void 0
+              ? _directiveNode$argume
+              : [];
+          const argNodeMap = new Set(argNodes.map((arg) => arg.name.value));
+
+          for (const [argName, argDef] of Object.entries(requiredArgs)) {
+            if (!argNodeMap.has(argName)) {
+              const argType = isType(argDef.type)
+                ? inspect(argDef.type)
+                : print(argDef.type);
+              context.reportError(
+                new GraphQLError(
+                  `Directive "@${directiveName}" argument "${argName}" of type "${argType}" is required, but it was not provided.`,
+                  {
+                    nodes: directiveNode,
+                  },
+                ),
+              );
+            }
+          }
+        }
+      },
+    },
+  };
+}
+
+function isRequiredArgumentNode(arg) {
+  return arg.type.kind === Kind.NON_NULL_TYPE && arg.defaultValue == null;
+}

graphql-subscription/node_modules/graphql/validation/rules/ScalarLeafsRule.d.ts

@@ -0,0 +1,9 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Scalar leafs
+ *
+ * A GraphQL document is valid only if all leaf fields (fields without
+ * sub selections) are of scalar or enum types.
+ */
+export declare function ScalarLeafsRule(context: ValidationContext): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/ScalarLeafsRule.js

@@ -0,0 +1,55 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.ScalarLeafsRule = ScalarLeafsRule;
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _definition = require('../../type/definition.js');
+
+/**
+ * Scalar leafs
+ *
+ * A GraphQL document is valid only if all leaf fields (fields without
+ * sub selections) are of scalar or enum types.
+ */
+function ScalarLeafsRule(context) {
+  return {
+    Field(node) {
+      const type = context.getType();
+      const selectionSet = node.selectionSet;
+
+      if (type) {
+        if ((0, _definition.isLeafType)((0, _definition.getNamedType)(type))) {
+          if (selectionSet) {
+            const fieldName = node.name.value;
+            const typeStr = (0, _inspect.inspect)(type);
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                `Field "${fieldName}" must not have a selection since type "${typeStr}" has no subfields.`,
+                {
+                  nodes: selectionSet,
+                },
+              ),
+            );
+          }
+        } else if (!selectionSet) {
+          const fieldName = node.name.value;
+          const typeStr = (0, _inspect.inspect)(type);
+          context.reportError(
+            new _GraphQLError.GraphQLError(
+              `Field "${fieldName}" of type "${typeStr}" must have a selection of subfields. Did you mean "${fieldName} { ... }"?`,
+              {
+                nodes: node,
+              },
+            ),
+          );
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/ScalarLeafsRule.mjs

@@ -0,0 +1,46 @@
+import { inspect } from '../../jsutils/inspect.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { getNamedType, isLeafType } from '../../type/definition.mjs';
+
+/**
+ * Scalar leafs
+ *
+ * A GraphQL document is valid only if all leaf fields (fields without
+ * sub selections) are of scalar or enum types.
+ */
+export function ScalarLeafsRule(context) {
+  return {
+    Field(node) {
+      const type = context.getType();
+      const selectionSet = node.selectionSet;
+
+      if (type) {
+        if (isLeafType(getNamedType(type))) {
+          if (selectionSet) {
+            const fieldName = node.name.value;
+            const typeStr = inspect(type);
+            context.reportError(
+              new GraphQLError(
+                `Field "${fieldName}" must not have a selection since type "${typeStr}" has no subfields.`,
+                {
+                  nodes: selectionSet,
+                },
+              ),
+            );
+          }
+        } else if (!selectionSet) {
+          const fieldName = node.name.value;
+          const typeStr = inspect(type);
+          context.reportError(
+            new GraphQLError(
+              `Field "${fieldName}" of type "${typeStr}" must have a selection of subfields. Did you mean "${fieldName} { ... }"?`,
+              {
+                nodes: node,
+              },
+            ),
+          );
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/SingleFieldSubscriptionsRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Subscriptions must only include a non-introspection field.
+ *
+ * A GraphQL subscription is valid only if it contains a single root field and
+ * that root field is not an introspection field.
+ *
+ * See https://spec.graphql.org/draft/#sec-Single-root-field
+ */
+export declare function SingleFieldSubscriptionsRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/SingleFieldSubscriptionsRule.js

@@ -0,0 +1,86 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.SingleFieldSubscriptionsRule = SingleFieldSubscriptionsRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _collectFields = require('../../execution/collectFields.js');
+
+/**
+ * Subscriptions must only include a non-introspection field.
+ *
+ * A GraphQL subscription is valid only if it contains a single root field and
+ * that root field is not an introspection field.
+ *
+ * See https://spec.graphql.org/draft/#sec-Single-root-field
+ */
+function SingleFieldSubscriptionsRule(context) {
+  return {
+    OperationDefinition(node) {
+      if (node.operation === 'subscription') {
+        const schema = context.getSchema();
+        const subscriptionType = schema.getSubscriptionType();
+
+        if (subscriptionType) {
+          const operationName = node.name ? node.name.value : null;
+          const variableValues = Object.create(null);
+          const document = context.getDocument();
+          const fragments = Object.create(null);
+
+          for (const definition of document.definitions) {
+            if (definition.kind === _kinds.Kind.FRAGMENT_DEFINITION) {
+              fragments[definition.name.value] = definition;
+            }
+          }
+
+          const fields = (0, _collectFields.collectFields)(
+            schema,
+            fragments,
+            variableValues,
+            subscriptionType,
+            node.selectionSet,
+          );
+
+          if (fields.size > 1) {
+            const fieldSelectionLists = [...fields.values()];
+            const extraFieldSelectionLists = fieldSelectionLists.slice(1);
+            const extraFieldSelections = extraFieldSelectionLists.flat();
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                operationName != null
+                  ? `Subscription "${operationName}" must select only one top level field.`
+                  : 'Anonymous Subscription must select only one top level field.',
+                {
+                  nodes: extraFieldSelections,
+                },
+              ),
+            );
+          }
+
+          for (const fieldNodes of fields.values()) {
+            const field = fieldNodes[0];
+            const fieldName = field.name.value;
+
+            if (fieldName.startsWith('__')) {
+              context.reportError(
+                new _GraphQLError.GraphQLError(
+                  operationName != null
+                    ? `Subscription "${operationName}" must not select an introspection top level field.`
+                    : 'Anonymous Subscription must not select an introspection top level field.',
+                  {
+                    nodes: fieldNodes,
+                  },
+                ),
+              );
+            }
+          }
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/SingleFieldSubscriptionsRule.mjs

@@ -0,0 +1,77 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import { collectFields } from '../../execution/collectFields.mjs';
+
+/**
+ * Subscriptions must only include a non-introspection field.
+ *
+ * A GraphQL subscription is valid only if it contains a single root field and
+ * that root field is not an introspection field.
+ *
+ * See https://spec.graphql.org/draft/#sec-Single-root-field
+ */
+export function SingleFieldSubscriptionsRule(context) {
+  return {
+    OperationDefinition(node) {
+      if (node.operation === 'subscription') {
+        const schema = context.getSchema();
+        const subscriptionType = schema.getSubscriptionType();
+
+        if (subscriptionType) {
+          const operationName = node.name ? node.name.value : null;
+          const variableValues = Object.create(null);
+          const document = context.getDocument();
+          const fragments = Object.create(null);
+
+          for (const definition of document.definitions) {
+            if (definition.kind === Kind.FRAGMENT_DEFINITION) {
+              fragments[definition.name.value] = definition;
+            }
+          }
+
+          const fields = collectFields(
+            schema,
+            fragments,
+            variableValues,
+            subscriptionType,
+            node.selectionSet,
+          );
+
+          if (fields.size > 1) {
+            const fieldSelectionLists = [...fields.values()];
+            const extraFieldSelectionLists = fieldSelectionLists.slice(1);
+            const extraFieldSelections = extraFieldSelectionLists.flat();
+            context.reportError(
+              new GraphQLError(
+                operationName != null
+                  ? `Subscription "${operationName}" must select only one top level field.`
+                  : 'Anonymous Subscription must select only one top level field.',
+                {
+                  nodes: extraFieldSelections,
+                },
+              ),
+            );
+          }
+
+          for (const fieldNodes of fields.values()) {
+            const field = fieldNodes[0];
+            const fieldName = field.name.value;
+
+            if (fieldName.startsWith('__')) {
+              context.reportError(
+                new GraphQLError(
+                  operationName != null
+                    ? `Subscription "${operationName}" must not select an introspection top level field.`
+                    : 'Anonymous Subscription must not select an introspection top level field.',
+                  {
+                    nodes: fieldNodes,
+                  },
+                ),
+              );
+            }
+          }
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueArgumentDefinitionNamesRule.d.ts

@@ -0,0 +1,11 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Unique argument definition names
+ *
+ * A GraphQL Object or Interface type is only valid if all its fields have uniquely named arguments.
+ * A GraphQL Directive is only valid if all its arguments are uniquely named.
+ */
+export declare function UniqueArgumentDefinitionNamesRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueArgumentDefinitionNamesRule.js

@@ -0,0 +1,92 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueArgumentDefinitionNamesRule = UniqueArgumentDefinitionNamesRule;
+
+var _groupBy = require('../../jsutils/groupBy.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique argument definition names
+ *
+ * A GraphQL Object or Interface type is only valid if all its fields have uniquely named arguments.
+ * A GraphQL Directive is only valid if all its arguments are uniquely named.
+ */
+function UniqueArgumentDefinitionNamesRule(context) {
+  return {
+    DirectiveDefinition(directiveNode) {
+      var _directiveNode$argume;
+
+      // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const argumentNodes =
+        (_directiveNode$argume = directiveNode.arguments) !== null &&
+        _directiveNode$argume !== void 0
+          ? _directiveNode$argume
+          : [];
+      return checkArgUniqueness(`@${directiveNode.name.value}`, argumentNodes);
+    },
+
+    InterfaceTypeDefinition: checkArgUniquenessPerField,
+    InterfaceTypeExtension: checkArgUniquenessPerField,
+    ObjectTypeDefinition: checkArgUniquenessPerField,
+    ObjectTypeExtension: checkArgUniquenessPerField,
+  };
+
+  function checkArgUniquenessPerField(typeNode) {
+    var _typeNode$fields;
+
+    const typeName = typeNode.name.value; // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+
+    const fieldNodes =
+      (_typeNode$fields = typeNode.fields) !== null &&
+      _typeNode$fields !== void 0
+        ? _typeNode$fields
+        : [];
+
+    for (const fieldDef of fieldNodes) {
+      var _fieldDef$arguments;
+
+      const fieldName = fieldDef.name.value; // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+
+      const argumentNodes =
+        (_fieldDef$arguments = fieldDef.arguments) !== null &&
+        _fieldDef$arguments !== void 0
+          ? _fieldDef$arguments
+          : [];
+      checkArgUniqueness(`${typeName}.${fieldName}`, argumentNodes);
+    }
+
+    return false;
+  }
+
+  function checkArgUniqueness(parentName, argumentNodes) {
+    const seenArgs = (0, _groupBy.groupBy)(
+      argumentNodes,
+      (arg) => arg.name.value,
+    );
+
+    for (const [argName, argNodes] of seenArgs) {
+      if (argNodes.length > 1) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Argument "${parentName}(${argName}:)" can only be defined once.`,
+            {
+              nodes: argNodes.map((node) => node.name),
+            },
+          ),
+        );
+      }
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueArgumentDefinitionNamesRule.mjs

@@ -0,0 +1,81 @@
+import { groupBy } from '../../jsutils/groupBy.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique argument definition names
+ *
+ * A GraphQL Object or Interface type is only valid if all its fields have uniquely named arguments.
+ * A GraphQL Directive is only valid if all its arguments are uniquely named.
+ */
+export function UniqueArgumentDefinitionNamesRule(context) {
+  return {
+    DirectiveDefinition(directiveNode) {
+      var _directiveNode$argume;
+
+      // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const argumentNodes =
+        (_directiveNode$argume = directiveNode.arguments) !== null &&
+        _directiveNode$argume !== void 0
+          ? _directiveNode$argume
+          : [];
+      return checkArgUniqueness(`@${directiveNode.name.value}`, argumentNodes);
+    },
+
+    InterfaceTypeDefinition: checkArgUniquenessPerField,
+    InterfaceTypeExtension: checkArgUniquenessPerField,
+    ObjectTypeDefinition: checkArgUniquenessPerField,
+    ObjectTypeExtension: checkArgUniquenessPerField,
+  };
+
+  function checkArgUniquenessPerField(typeNode) {
+    var _typeNode$fields;
+
+    const typeName = typeNode.name.value; // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+
+    const fieldNodes =
+      (_typeNode$fields = typeNode.fields) !== null &&
+      _typeNode$fields !== void 0
+        ? _typeNode$fields
+        : [];
+
+    for (const fieldDef of fieldNodes) {
+      var _fieldDef$arguments;
+
+      const fieldName = fieldDef.name.value; // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+
+      const argumentNodes =
+        (_fieldDef$arguments = fieldDef.arguments) !== null &&
+        _fieldDef$arguments !== void 0
+          ? _fieldDef$arguments
+          : [];
+      checkArgUniqueness(`${typeName}.${fieldName}`, argumentNodes);
+    }
+
+    return false;
+  }
+
+  function checkArgUniqueness(parentName, argumentNodes) {
+    const seenArgs = groupBy(argumentNodes, (arg) => arg.name.value);
+
+    for (const [argName, argNodes] of seenArgs) {
+      if (argNodes.length > 1) {
+        context.reportError(
+          new GraphQLError(
+            `Argument "${parentName}(${argName}:)" can only be defined once.`,
+            {
+              nodes: argNodes.map((node) => node.name),
+            },
+          ),
+        );
+      }
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueArgumentNamesRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Unique argument names
+ *
+ * A GraphQL field or directive is only valid if all supplied arguments are
+ * uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Argument-Names
+ */
+export declare function UniqueArgumentNamesRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueArgumentNamesRule.js

@@ -0,0 +1,55 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueArgumentNamesRule = UniqueArgumentNamesRule;
+
+var _groupBy = require('../../jsutils/groupBy.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique argument names
+ *
+ * A GraphQL field or directive is only valid if all supplied arguments are
+ * uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Argument-Names
+ */
+function UniqueArgumentNamesRule(context) {
+  return {
+    Field: checkArgUniqueness,
+    Directive: checkArgUniqueness,
+  };
+
+  function checkArgUniqueness(parentNode) {
+    var _parentNode$arguments;
+
+    // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+    const argumentNodes =
+      (_parentNode$arguments = parentNode.arguments) !== null &&
+      _parentNode$arguments !== void 0
+        ? _parentNode$arguments
+        : [];
+    const seenArgs = (0, _groupBy.groupBy)(
+      argumentNodes,
+      (arg) => arg.name.value,
+    );
+
+    for (const [argName, argNodes] of seenArgs) {
+      if (argNodes.length > 1) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `There can be only one argument named "${argName}".`,
+            {
+              nodes: argNodes.map((node) => node.name),
+            },
+          ),
+        );
+      }
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueArgumentNamesRule.mjs

@@ -0,0 +1,44 @@
+import { groupBy } from '../../jsutils/groupBy.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique argument names
+ *
+ * A GraphQL field or directive is only valid if all supplied arguments are
+ * uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Argument-Names
+ */
+export function UniqueArgumentNamesRule(context) {
+  return {
+    Field: checkArgUniqueness,
+    Directive: checkArgUniqueness,
+  };
+
+  function checkArgUniqueness(parentNode) {
+    var _parentNode$arguments;
+
+    // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+    const argumentNodes =
+      (_parentNode$arguments = parentNode.arguments) !== null &&
+      _parentNode$arguments !== void 0
+        ? _parentNode$arguments
+        : [];
+    const seenArgs = groupBy(argumentNodes, (arg) => arg.name.value);
+
+    for (const [argName, argNodes] of seenArgs) {
+      if (argNodes.length > 1) {
+        context.reportError(
+          new GraphQLError(
+            `There can be only one argument named "${argName}".`,
+            {
+              nodes: argNodes.map((node) => node.name),
+            },
+          ),
+        );
+      }
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueDirectiveNamesRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Unique directive names
+ *
+ * A GraphQL document is only valid if all defined directives have unique names.
+ */
+export declare function UniqueDirectiveNamesRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueDirectiveNamesRule.js

@@ -0,0 +1,54 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueDirectiveNamesRule = UniqueDirectiveNamesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique directive names
+ *
+ * A GraphQL document is only valid if all defined directives have unique names.
+ */
+function UniqueDirectiveNamesRule(context) {
+  const knownDirectiveNames = Object.create(null);
+  const schema = context.getSchema();
+  return {
+    DirectiveDefinition(node) {
+      const directiveName = node.name.value;
+
+      if (
+        schema !== null &&
+        schema !== void 0 &&
+        schema.getDirective(directiveName)
+      ) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Directive "@${directiveName}" already exists in the schema. It cannot be redefined.`,
+            {
+              nodes: node.name,
+            },
+          ),
+        );
+        return;
+      }
+
+      if (knownDirectiveNames[directiveName]) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `There can be only one directive named "@${directiveName}".`,
+            {
+              nodes: [knownDirectiveNames[directiveName], node.name],
+            },
+          ),
+        );
+      } else {
+        knownDirectiveNames[directiveName] = node.name;
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueDirectiveNamesRule.mjs

@@ -0,0 +1,47 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique directive names
+ *
+ * A GraphQL document is only valid if all defined directives have unique names.
+ */
+export function UniqueDirectiveNamesRule(context) {
+  const knownDirectiveNames = Object.create(null);
+  const schema = context.getSchema();
+  return {
+    DirectiveDefinition(node) {
+      const directiveName = node.name.value;
+
+      if (
+        schema !== null &&
+        schema !== void 0 &&
+        schema.getDirective(directiveName)
+      ) {
+        context.reportError(
+          new GraphQLError(
+            `Directive "@${directiveName}" already exists in the schema. It cannot be redefined.`,
+            {
+              nodes: node.name,
+            },
+          ),
+        );
+        return;
+      }
+
+      if (knownDirectiveNames[directiveName]) {
+        context.reportError(
+          new GraphQLError(
+            `There can be only one directive named "@${directiveName}".`,
+            {
+              nodes: [knownDirectiveNames[directiveName], node.name],
+            },
+          ),
+        );
+      } else {
+        knownDirectiveNames[directiveName] = node.name;
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueDirectivesPerLocationRule.d.ts

@@ -0,0 +1,16 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type {
+  SDLValidationContext,
+  ValidationContext,
+} from '../ValidationContext';
+/**
+ * Unique directive names per location
+ *
+ * A GraphQL document is only valid if all non-repeatable directives at
+ * a given location are uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-Unique-Per-Location
+ */
+export declare function UniqueDirectivesPerLocationRule(
+  context: ValidationContext | SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueDirectivesPerLocationRule.js

@@ -0,0 +1,95 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueDirectivesPerLocationRule = UniqueDirectivesPerLocationRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _predicates = require('../../language/predicates.js');
+
+var _directives = require('../../type/directives.js');
+
+/**
+ * Unique directive names per location
+ *
+ * A GraphQL document is only valid if all non-repeatable directives at
+ * a given location are uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-Unique-Per-Location
+ */
+function UniqueDirectivesPerLocationRule(context) {
+  const uniqueDirectiveMap = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives = schema
+    ? schema.getDirectives()
+    : _directives.specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    uniqueDirectiveMap[directive.name] = !directive.isRepeatable;
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === _kinds.Kind.DIRECTIVE_DEFINITION) {
+      uniqueDirectiveMap[def.name.value] = !def.repeatable;
+    }
+  }
+
+  const schemaDirectives = Object.create(null);
+  const typeDirectivesMap = Object.create(null);
+  return {
+    // Many different AST nodes may contain directives. Rather than listing
+    // them all, just listen for entering any node, and check to see if it
+    // defines any directives.
+    enter(node) {
+      if (!('directives' in node) || !node.directives) {
+        return;
+      }
+
+      let seenDirectives;
+
+      if (
+        node.kind === _kinds.Kind.SCHEMA_DEFINITION ||
+        node.kind === _kinds.Kind.SCHEMA_EXTENSION
+      ) {
+        seenDirectives = schemaDirectives;
+      } else if (
+        (0, _predicates.isTypeDefinitionNode)(node) ||
+        (0, _predicates.isTypeExtensionNode)(node)
+      ) {
+        const typeName = node.name.value;
+        seenDirectives = typeDirectivesMap[typeName];
+
+        if (seenDirectives === undefined) {
+          typeDirectivesMap[typeName] = seenDirectives = Object.create(null);
+        }
+      } else {
+        seenDirectives = Object.create(null);
+      }
+
+      for (const directive of node.directives) {
+        const directiveName = directive.name.value;
+
+        if (uniqueDirectiveMap[directiveName]) {
+          if (seenDirectives[directiveName]) {
+            context.reportError(
+              new _GraphQLError.GraphQLError(
+                `The directive "@${directiveName}" can only be used once at this location.`,
+                {
+                  nodes: [seenDirectives[directiveName], directive],
+                },
+              ),
+            );
+          } else {
+            seenDirectives[directiveName] = directive;
+          }
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueDirectivesPerLocationRule.mjs

@@ -0,0 +1,85 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { Kind } from '../../language/kinds.mjs';
+import {
+  isTypeDefinitionNode,
+  isTypeExtensionNode,
+} from '../../language/predicates.mjs';
+import { specifiedDirectives } from '../../type/directives.mjs';
+
+/**
+ * Unique directive names per location
+ *
+ * A GraphQL document is only valid if all non-repeatable directives at
+ * a given location are uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-Unique-Per-Location
+ */
+export function UniqueDirectivesPerLocationRule(context) {
+  const uniqueDirectiveMap = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives = schema
+    ? schema.getDirectives()
+    : specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    uniqueDirectiveMap[directive.name] = !directive.isRepeatable;
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === Kind.DIRECTIVE_DEFINITION) {
+      uniqueDirectiveMap[def.name.value] = !def.repeatable;
+    }
+  }
+
+  const schemaDirectives = Object.create(null);
+  const typeDirectivesMap = Object.create(null);
+  return {
+    // Many different AST nodes may contain directives. Rather than listing
+    // them all, just listen for entering any node, and check to see if it
+    // defines any directives.
+    enter(node) {
+      if (!('directives' in node) || !node.directives) {
+        return;
+      }
+
+      let seenDirectives;
+
+      if (
+        node.kind === Kind.SCHEMA_DEFINITION ||
+        node.kind === Kind.SCHEMA_EXTENSION
+      ) {
+        seenDirectives = schemaDirectives;
+      } else if (isTypeDefinitionNode(node) || isTypeExtensionNode(node)) {
+        const typeName = node.name.value;
+        seenDirectives = typeDirectivesMap[typeName];
+
+        if (seenDirectives === undefined) {
+          typeDirectivesMap[typeName] = seenDirectives = Object.create(null);
+        }
+      } else {
+        seenDirectives = Object.create(null);
+      }
+
+      for (const directive of node.directives) {
+        const directiveName = directive.name.value;
+
+        if (uniqueDirectiveMap[directiveName]) {
+          if (seenDirectives[directiveName]) {
+            context.reportError(
+              new GraphQLError(
+                `The directive "@${directiveName}" can only be used once at this location.`,
+                {
+                  nodes: [seenDirectives[directiveName], directive],
+                },
+              ),
+            );
+          } else {
+            seenDirectives[directiveName] = directive;
+          }
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueEnumValueNamesRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Unique enum value names
+ *
+ * A GraphQL enum type is only valid if all its values are uniquely named.
+ */
+export declare function UniqueEnumValueNamesRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueEnumValueNamesRule.js

@@ -0,0 +1,75 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueEnumValueNamesRule = UniqueEnumValueNamesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _definition = require('../../type/definition.js');
+
+/**
+ * Unique enum value names
+ *
+ * A GraphQL enum type is only valid if all its values are uniquely named.
+ */
+function UniqueEnumValueNamesRule(context) {
+  const schema = context.getSchema();
+  const existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
+  const knownValueNames = Object.create(null);
+  return {
+    EnumTypeDefinition: checkValueUniqueness,
+    EnumTypeExtension: checkValueUniqueness,
+  };
+
+  function checkValueUniqueness(node) {
+    var _node$values;
+
+    const typeName = node.name.value;
+
+    if (!knownValueNames[typeName]) {
+      knownValueNames[typeName] = Object.create(null);
+    } // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+
+    const valueNodes =
+      (_node$values = node.values) !== null && _node$values !== void 0
+        ? _node$values
+        : [];
+    const valueNames = knownValueNames[typeName];
+
+    for (const valueDef of valueNodes) {
+      const valueName = valueDef.name.value;
+      const existingType = existingTypeMap[typeName];
+
+      if (
+        (0, _definition.isEnumType)(existingType) &&
+        existingType.getValue(valueName)
+      ) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Enum value "${typeName}.${valueName}" already exists in the schema. It cannot also be defined in this type extension.`,
+            {
+              nodes: valueDef.name,
+            },
+          ),
+        );
+      } else if (valueNames[valueName]) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Enum value "${typeName}.${valueName}" can only be defined once.`,
+            {
+              nodes: [valueNames[valueName], valueDef.name],
+            },
+          ),
+        );
+      } else {
+        valueNames[valueName] = valueDef.name;
+      }
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueEnumValueNamesRule.mjs

@@ -0,0 +1,64 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { isEnumType } from '../../type/definition.mjs';
+
+/**
+ * Unique enum value names
+ *
+ * A GraphQL enum type is only valid if all its values are uniquely named.
+ */
+export function UniqueEnumValueNamesRule(context) {
+  const schema = context.getSchema();
+  const existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
+  const knownValueNames = Object.create(null);
+  return {
+    EnumTypeDefinition: checkValueUniqueness,
+    EnumTypeExtension: checkValueUniqueness,
+  };
+
+  function checkValueUniqueness(node) {
+    var _node$values;
+
+    const typeName = node.name.value;
+
+    if (!knownValueNames[typeName]) {
+      knownValueNames[typeName] = Object.create(null);
+    } // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+
+    const valueNodes =
+      (_node$values = node.values) !== null && _node$values !== void 0
+        ? _node$values
+        : [];
+    const valueNames = knownValueNames[typeName];
+
+    for (const valueDef of valueNodes) {
+      const valueName = valueDef.name.value;
+      const existingType = existingTypeMap[typeName];
+
+      if (isEnumType(existingType) && existingType.getValue(valueName)) {
+        context.reportError(
+          new GraphQLError(
+            `Enum value "${typeName}.${valueName}" already exists in the schema. It cannot also be defined in this type extension.`,
+            {
+              nodes: valueDef.name,
+            },
+          ),
+        );
+      } else if (valueNames[valueName]) {
+        context.reportError(
+          new GraphQLError(
+            `Enum value "${typeName}.${valueName}" can only be defined once.`,
+            {
+              nodes: [valueNames[valueName], valueDef.name],
+            },
+          ),
+        );
+      } else {
+        valueNames[valueName] = valueDef.name;
+      }
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueFieldDefinitionNamesRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Unique field definition names
+ *
+ * A GraphQL complex type is only valid if all its fields are uniquely named.
+ */
+export declare function UniqueFieldDefinitionNamesRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueFieldDefinitionNamesRule.js

@@ -0,0 +1,87 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueFieldDefinitionNamesRule = UniqueFieldDefinitionNamesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _definition = require('../../type/definition.js');
+
+/**
+ * Unique field definition names
+ *
+ * A GraphQL complex type is only valid if all its fields are uniquely named.
+ */
+function UniqueFieldDefinitionNamesRule(context) {
+  const schema = context.getSchema();
+  const existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
+  const knownFieldNames = Object.create(null);
+  return {
+    InputObjectTypeDefinition: checkFieldUniqueness,
+    InputObjectTypeExtension: checkFieldUniqueness,
+    InterfaceTypeDefinition: checkFieldUniqueness,
+    InterfaceTypeExtension: checkFieldUniqueness,
+    ObjectTypeDefinition: checkFieldUniqueness,
+    ObjectTypeExtension: checkFieldUniqueness,
+  };
+
+  function checkFieldUniqueness(node) {
+    var _node$fields;
+
+    const typeName = node.name.value;
+
+    if (!knownFieldNames[typeName]) {
+      knownFieldNames[typeName] = Object.create(null);
+    } // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+
+    const fieldNodes =
+      (_node$fields = node.fields) !== null && _node$fields !== void 0
+        ? _node$fields
+        : [];
+    const fieldNames = knownFieldNames[typeName];
+
+    for (const fieldDef of fieldNodes) {
+      const fieldName = fieldDef.name.value;
+
+      if (hasField(existingTypeMap[typeName], fieldName)) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Field "${typeName}.${fieldName}" already exists in the schema. It cannot also be defined in this type extension.`,
+            {
+              nodes: fieldDef.name,
+            },
+          ),
+        );
+      } else if (fieldNames[fieldName]) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Field "${typeName}.${fieldName}" can only be defined once.`,
+            {
+              nodes: [fieldNames[fieldName], fieldDef.name],
+            },
+          ),
+        );
+      } else {
+        fieldNames[fieldName] = fieldDef.name;
+      }
+    }
+
+    return false;
+  }
+}
+
+function hasField(type, fieldName) {
+  if (
+    (0, _definition.isObjectType)(type) ||
+    (0, _definition.isInterfaceType)(type) ||
+    (0, _definition.isInputObjectType)(type)
+  ) {
+    return type.getFields()[fieldName] != null;
+  }
+
+  return false;
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueFieldDefinitionNamesRule.mjs

@@ -0,0 +1,79 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import {
+  isInputObjectType,
+  isInterfaceType,
+  isObjectType,
+} from '../../type/definition.mjs';
+
+/**
+ * Unique field definition names
+ *
+ * A GraphQL complex type is only valid if all its fields are uniquely named.
+ */
+export function UniqueFieldDefinitionNamesRule(context) {
+  const schema = context.getSchema();
+  const existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
+  const knownFieldNames = Object.create(null);
+  return {
+    InputObjectTypeDefinition: checkFieldUniqueness,
+    InputObjectTypeExtension: checkFieldUniqueness,
+    InterfaceTypeDefinition: checkFieldUniqueness,
+    InterfaceTypeExtension: checkFieldUniqueness,
+    ObjectTypeDefinition: checkFieldUniqueness,
+    ObjectTypeExtension: checkFieldUniqueness,
+  };
+
+  function checkFieldUniqueness(node) {
+    var _node$fields;
+
+    const typeName = node.name.value;
+
+    if (!knownFieldNames[typeName]) {
+      knownFieldNames[typeName] = Object.create(null);
+    } // FIXME: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+
+    const fieldNodes =
+      (_node$fields = node.fields) !== null && _node$fields !== void 0
+        ? _node$fields
+        : [];
+    const fieldNames = knownFieldNames[typeName];
+
+    for (const fieldDef of fieldNodes) {
+      const fieldName = fieldDef.name.value;
+
+      if (hasField(existingTypeMap[typeName], fieldName)) {
+        context.reportError(
+          new GraphQLError(
+            `Field "${typeName}.${fieldName}" already exists in the schema. It cannot also be defined in this type extension.`,
+            {
+              nodes: fieldDef.name,
+            },
+          ),
+        );
+      } else if (fieldNames[fieldName]) {
+        context.reportError(
+          new GraphQLError(
+            `Field "${typeName}.${fieldName}" can only be defined once.`,
+            {
+              nodes: [fieldNames[fieldName], fieldDef.name],
+            },
+          ),
+        );
+      } else {
+        fieldNames[fieldName] = fieldDef.name;
+      }
+    }
+
+    return false;
+  }
+}
+
+function hasField(type, fieldName) {
+  if (isObjectType(type) || isInterfaceType(type) || isInputObjectType(type)) {
+    return type.getFields()[fieldName] != null;
+  }
+
+  return false;
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueFragmentNamesRule.d.ts

@@ -0,0 +1,12 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Unique fragment names
+ *
+ * A GraphQL document is only valid if all defined fragments have unique names.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-Name-Uniqueness
+ */
+export declare function UniqueFragmentNamesRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueFragmentNamesRule.js

@@ -0,0 +1,41 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueFragmentNamesRule = UniqueFragmentNamesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique fragment names
+ *
+ * A GraphQL document is only valid if all defined fragments have unique names.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-Name-Uniqueness
+ */
+function UniqueFragmentNamesRule(context) {
+  const knownFragmentNames = Object.create(null);
+  return {
+    OperationDefinition: () => false,
+
+    FragmentDefinition(node) {
+      const fragmentName = node.name.value;
+
+      if (knownFragmentNames[fragmentName]) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `There can be only one fragment named "${fragmentName}".`,
+            {
+              nodes: [knownFragmentNames[fragmentName], node.name],
+            },
+          ),
+        );
+      } else {
+        knownFragmentNames[fragmentName] = node.name;
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueFragmentNamesRule.mjs

@@ -0,0 +1,34 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique fragment names
+ *
+ * A GraphQL document is only valid if all defined fragments have unique names.
+ *
+ * See https://spec.graphql.org/draft/#sec-Fragment-Name-Uniqueness
+ */
+export function UniqueFragmentNamesRule(context) {
+  const knownFragmentNames = Object.create(null);
+  return {
+    OperationDefinition: () => false,
+
+    FragmentDefinition(node) {
+      const fragmentName = node.name.value;
+
+      if (knownFragmentNames[fragmentName]) {
+        context.reportError(
+          new GraphQLError(
+            `There can be only one fragment named "${fragmentName}".`,
+            {
+              nodes: [knownFragmentNames[fragmentName], node.name],
+            },
+          ),
+        );
+      } else {
+        knownFragmentNames[fragmentName] = node.name;
+      }
+
+      return false;
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueInputFieldNamesRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Unique input field names
+ *
+ * A GraphQL input object value is only valid if all supplied fields are
+ * uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Input-Object-Field-Uniqueness
+ */
+export declare function UniqueInputFieldNamesRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueInputFieldNamesRule.js

@@ -0,0 +1,54 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueInputFieldNamesRule = UniqueInputFieldNamesRule;
+
+var _invariant = require('../../jsutils/invariant.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique input field names
+ *
+ * A GraphQL input object value is only valid if all supplied fields are
+ * uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Input-Object-Field-Uniqueness
+ */
+function UniqueInputFieldNamesRule(context) {
+  const knownNameStack = [];
+  let knownNames = Object.create(null);
+  return {
+    ObjectValue: {
+      enter() {
+        knownNameStack.push(knownNames);
+        knownNames = Object.create(null);
+      },
+
+      leave() {
+        const prevKnownNames = knownNameStack.pop();
+        prevKnownNames || (0, _invariant.invariant)(false);
+        knownNames = prevKnownNames;
+      },
+    },
+
+    ObjectField(node) {
+      const fieldName = node.name.value;
+
+      if (knownNames[fieldName]) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `There can be only one input field named "${fieldName}".`,
+            {
+              nodes: [knownNames[fieldName], node.name],
+            },
+          ),
+        );
+      } else {
+        knownNames[fieldName] = node.name;
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueInputFieldNamesRule.mjs

@@ -0,0 +1,46 @@
+import { invariant } from '../../jsutils/invariant.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique input field names
+ *
+ * A GraphQL input object value is only valid if all supplied fields are
+ * uniquely named.
+ *
+ * See https://spec.graphql.org/draft/#sec-Input-Object-Field-Uniqueness
+ */
+export function UniqueInputFieldNamesRule(context) {
+  const knownNameStack = [];
+  let knownNames = Object.create(null);
+  return {
+    ObjectValue: {
+      enter() {
+        knownNameStack.push(knownNames);
+        knownNames = Object.create(null);
+      },
+
+      leave() {
+        const prevKnownNames = knownNameStack.pop();
+        prevKnownNames || invariant(false);
+        knownNames = prevKnownNames;
+      },
+    },
+
+    ObjectField(node) {
+      const fieldName = node.name.value;
+
+      if (knownNames[fieldName]) {
+        context.reportError(
+          new GraphQLError(
+            `There can be only one input field named "${fieldName}".`,
+            {
+              nodes: [knownNames[fieldName], node.name],
+            },
+          ),
+        );
+      } else {
+        knownNames[fieldName] = node.name;
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueOperationNamesRule.d.ts

@@ -0,0 +1,12 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Unique operation names
+ *
+ * A GraphQL document is only valid if all defined operations have unique names.
+ *
+ * See https://spec.graphql.org/draft/#sec-Operation-Name-Uniqueness
+ */
+export declare function UniqueOperationNamesRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueOperationNamesRule.js

@@ -0,0 +1,46 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueOperationNamesRule = UniqueOperationNamesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique operation names
+ *
+ * A GraphQL document is only valid if all defined operations have unique names.
+ *
+ * See https://spec.graphql.org/draft/#sec-Operation-Name-Uniqueness
+ */
+function UniqueOperationNamesRule(context) {
+  const knownOperationNames = Object.create(null);
+  return {
+    OperationDefinition(node) {
+      const operationName = node.name;
+
+      if (operationName) {
+        if (knownOperationNames[operationName.value]) {
+          context.reportError(
+            new _GraphQLError.GraphQLError(
+              `There can be only one operation named "${operationName.value}".`,
+              {
+                nodes: [
+                  knownOperationNames[operationName.value],
+                  operationName,
+                ],
+              },
+            ),
+          );
+        } else {
+          knownOperationNames[operationName.value] = operationName;
+        }
+      }
+
+      return false;
+    },
+
+    FragmentDefinition: () => false,
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueOperationNamesRule.mjs

@@ -0,0 +1,39 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique operation names
+ *
+ * A GraphQL document is only valid if all defined operations have unique names.
+ *
+ * See https://spec.graphql.org/draft/#sec-Operation-Name-Uniqueness
+ */
+export function UniqueOperationNamesRule(context) {
+  const knownOperationNames = Object.create(null);
+  return {
+    OperationDefinition(node) {
+      const operationName = node.name;
+
+      if (operationName) {
+        if (knownOperationNames[operationName.value]) {
+          context.reportError(
+            new GraphQLError(
+              `There can be only one operation named "${operationName.value}".`,
+              {
+                nodes: [
+                  knownOperationNames[operationName.value],
+                  operationName,
+                ],
+              },
+            ),
+          );
+        } else {
+          knownOperationNames[operationName.value] = operationName;
+        }
+      }
+
+      return false;
+    },
+
+    FragmentDefinition: () => false,
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueOperationTypesRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Unique operation types
+ *
+ * A GraphQL document is only valid if it has only one type per operation.
+ */
+export declare function UniqueOperationTypesRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueOperationTypesRule.js

@@ -0,0 +1,71 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueOperationTypesRule = UniqueOperationTypesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique operation types
+ *
+ * A GraphQL document is only valid if it has only one type per operation.
+ */
+function UniqueOperationTypesRule(context) {
+  const schema = context.getSchema();
+  const definedOperationTypes = Object.create(null);
+  const existingOperationTypes = schema
+    ? {
+        query: schema.getQueryType(),
+        mutation: schema.getMutationType(),
+        subscription: schema.getSubscriptionType(),
+      }
+    : {};
+  return {
+    SchemaDefinition: checkOperationTypes,
+    SchemaExtension: checkOperationTypes,
+  };
+
+  function checkOperationTypes(node) {
+    var _node$operationTypes;
+
+    // See: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+    const operationTypesNodes =
+      (_node$operationTypes = node.operationTypes) !== null &&
+      _node$operationTypes !== void 0
+        ? _node$operationTypes
+        : [];
+
+    for (const operationType of operationTypesNodes) {
+      const operation = operationType.operation;
+      const alreadyDefinedOperationType = definedOperationTypes[operation];
+
+      if (existingOperationTypes[operation]) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Type for ${operation} already defined in the schema. It cannot be redefined.`,
+            {
+              nodes: operationType,
+            },
+          ),
+        );
+      } else if (alreadyDefinedOperationType) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `There can be only one ${operation} type in schema.`,
+            {
+              nodes: [alreadyDefinedOperationType, operationType],
+            },
+          ),
+        );
+      } else {
+        definedOperationTypes[operation] = operationType;
+      }
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueOperationTypesRule.mjs

@@ -0,0 +1,64 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique operation types
+ *
+ * A GraphQL document is only valid if it has only one type per operation.
+ */
+export function UniqueOperationTypesRule(context) {
+  const schema = context.getSchema();
+  const definedOperationTypes = Object.create(null);
+  const existingOperationTypes = schema
+    ? {
+        query: schema.getQueryType(),
+        mutation: schema.getMutationType(),
+        subscription: schema.getSubscriptionType(),
+      }
+    : {};
+  return {
+    SchemaDefinition: checkOperationTypes,
+    SchemaExtension: checkOperationTypes,
+  };
+
+  function checkOperationTypes(node) {
+    var _node$operationTypes;
+
+    // See: https://github.com/graphql/graphql-js/issues/2203
+
+    /* c8 ignore next */
+    const operationTypesNodes =
+      (_node$operationTypes = node.operationTypes) !== null &&
+      _node$operationTypes !== void 0
+        ? _node$operationTypes
+        : [];
+
+    for (const operationType of operationTypesNodes) {
+      const operation = operationType.operation;
+      const alreadyDefinedOperationType = definedOperationTypes[operation];
+
+      if (existingOperationTypes[operation]) {
+        context.reportError(
+          new GraphQLError(
+            `Type for ${operation} already defined in the schema. It cannot be redefined.`,
+            {
+              nodes: operationType,
+            },
+          ),
+        );
+      } else if (alreadyDefinedOperationType) {
+        context.reportError(
+          new GraphQLError(
+            `There can be only one ${operation} type in schema.`,
+            {
+              nodes: [alreadyDefinedOperationType, operationType],
+            },
+          ),
+        );
+      } else {
+        definedOperationTypes[operation] = operationType;
+      }
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueTypeNamesRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { SDLValidationContext } from '../ValidationContext';
+/**
+ * Unique type names
+ *
+ * A GraphQL document is only valid if all defined types have unique names.
+ */
+export declare function UniqueTypeNamesRule(
+  context: SDLValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueTypeNamesRule.js

@@ -0,0 +1,57 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueTypeNamesRule = UniqueTypeNamesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique type names
+ *
+ * A GraphQL document is only valid if all defined types have unique names.
+ */
+function UniqueTypeNamesRule(context) {
+  const knownTypeNames = Object.create(null);
+  const schema = context.getSchema();
+  return {
+    ScalarTypeDefinition: checkTypeName,
+    ObjectTypeDefinition: checkTypeName,
+    InterfaceTypeDefinition: checkTypeName,
+    UnionTypeDefinition: checkTypeName,
+    EnumTypeDefinition: checkTypeName,
+    InputObjectTypeDefinition: checkTypeName,
+  };
+
+  function checkTypeName(node) {
+    const typeName = node.name.value;
+
+    if (schema !== null && schema !== void 0 && schema.getType(typeName)) {
+      context.reportError(
+        new _GraphQLError.GraphQLError(
+          `Type "${typeName}" already exists in the schema. It cannot also be defined in this type definition.`,
+          {
+            nodes: node.name,
+          },
+        ),
+      );
+      return;
+    }
+
+    if (knownTypeNames[typeName]) {
+      context.reportError(
+        new _GraphQLError.GraphQLError(
+          `There can be only one type named "${typeName}".`,
+          {
+            nodes: [knownTypeNames[typeName], node.name],
+          },
+        ),
+      );
+    } else {
+      knownTypeNames[typeName] = node.name;
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueTypeNamesRule.mjs

@@ -0,0 +1,47 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique type names
+ *
+ * A GraphQL document is only valid if all defined types have unique names.
+ */
+export function UniqueTypeNamesRule(context) {
+  const knownTypeNames = Object.create(null);
+  const schema = context.getSchema();
+  return {
+    ScalarTypeDefinition: checkTypeName,
+    ObjectTypeDefinition: checkTypeName,
+    InterfaceTypeDefinition: checkTypeName,
+    UnionTypeDefinition: checkTypeName,
+    EnumTypeDefinition: checkTypeName,
+    InputObjectTypeDefinition: checkTypeName,
+  };
+
+  function checkTypeName(node) {
+    const typeName = node.name.value;
+
+    if (schema !== null && schema !== void 0 && schema.getType(typeName)) {
+      context.reportError(
+        new GraphQLError(
+          `Type "${typeName}" already exists in the schema. It cannot also be defined in this type definition.`,
+          {
+            nodes: node.name,
+          },
+        ),
+      );
+      return;
+    }
+
+    if (knownTypeNames[typeName]) {
+      context.reportError(
+        new GraphQLError(`There can be only one type named "${typeName}".`, {
+          nodes: [knownTypeNames[typeName], node.name],
+        }),
+      );
+    } else {
+      knownTypeNames[typeName] = node.name;
+    }
+
+    return false;
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueVariableNamesRule.d.ts

@@ -0,0 +1,10 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Unique variable names
+ *
+ * A GraphQL operation is only valid if all its variables are uniquely named.
+ */
+export declare function UniqueVariableNamesRule(
+  context: ASTValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/UniqueVariableNamesRule.js

@@ -0,0 +1,49 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.UniqueVariableNamesRule = UniqueVariableNamesRule;
+
+var _groupBy = require('../../jsutils/groupBy.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+/**
+ * Unique variable names
+ *
+ * A GraphQL operation is only valid if all its variables are uniquely named.
+ */
+function UniqueVariableNamesRule(context) {
+  return {
+    OperationDefinition(operationNode) {
+      var _operationNode$variab;
+
+      // See: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const variableDefinitions =
+        (_operationNode$variab = operationNode.variableDefinitions) !== null &&
+        _operationNode$variab !== void 0
+          ? _operationNode$variab
+          : [];
+      const seenVariableDefinitions = (0, _groupBy.groupBy)(
+        variableDefinitions,
+        (node) => node.variable.name.value,
+      );
+
+      for (const [variableName, variableNodes] of seenVariableDefinitions) {
+        if (variableNodes.length > 1) {
+          context.reportError(
+            new _GraphQLError.GraphQLError(
+              `There can be only one variable named "$${variableName}".`,
+              {
+                nodes: variableNodes.map((node) => node.variable.name),
+              },
+            ),
+          );
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/UniqueVariableNamesRule.mjs

@@ -0,0 +1,41 @@
+import { groupBy } from '../../jsutils/groupBy.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+
+/**
+ * Unique variable names
+ *
+ * A GraphQL operation is only valid if all its variables are uniquely named.
+ */
+export function UniqueVariableNamesRule(context) {
+  return {
+    OperationDefinition(operationNode) {
+      var _operationNode$variab;
+
+      // See: https://github.com/graphql/graphql-js/issues/2203
+
+      /* c8 ignore next */
+      const variableDefinitions =
+        (_operationNode$variab = operationNode.variableDefinitions) !== null &&
+        _operationNode$variab !== void 0
+          ? _operationNode$variab
+          : [];
+      const seenVariableDefinitions = groupBy(
+        variableDefinitions,
+        (node) => node.variable.name.value,
+      );
+
+      for (const [variableName, variableNodes] of seenVariableDefinitions) {
+        if (variableNodes.length > 1) {
+          context.reportError(
+            new GraphQLError(
+              `There can be only one variable named "$${variableName}".`,
+              {
+                nodes: variableNodes.map((node) => node.variable.name),
+              },
+            ),
+          );
+        }
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/ValuesOfCorrectTypeRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Value literals of correct type
+ *
+ * A GraphQL document is only valid if all value literals are of the type
+ * expected at their position.
+ *
+ * See https://spec.graphql.org/draft/#sec-Values-of-Correct-Type
+ */
+export declare function ValuesOfCorrectTypeRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/ValuesOfCorrectTypeRule.js

@@ -0,0 +1,192 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.ValuesOfCorrectTypeRule = ValuesOfCorrectTypeRule;
+
+var _didYouMean = require('../../jsutils/didYouMean.js');
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _keyMap = require('../../jsutils/keyMap.js');
+
+var _suggestionList = require('../../jsutils/suggestionList.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _printer = require('../../language/printer.js');
+
+var _definition = require('../../type/definition.js');
+
+/**
+ * Value literals of correct type
+ *
+ * A GraphQL document is only valid if all value literals are of the type
+ * expected at their position.
+ *
+ * See https://spec.graphql.org/draft/#sec-Values-of-Correct-Type
+ */
+function ValuesOfCorrectTypeRule(context) {
+  return {
+    ListValue(node) {
+      // Note: TypeInfo will traverse into a list's item type, so look to the
+      // parent input type to check if it is a list.
+      const type = (0, _definition.getNullableType)(
+        context.getParentInputType(),
+      );
+
+      if (!(0, _definition.isListType)(type)) {
+        isValidValueNode(context, node);
+        return false; // Don't traverse further.
+      }
+    },
+
+    ObjectValue(node) {
+      const type = (0, _definition.getNamedType)(context.getInputType());
+
+      if (!(0, _definition.isInputObjectType)(type)) {
+        isValidValueNode(context, node);
+        return false; // Don't traverse further.
+      } // Ensure every required field exists.
+
+      const fieldNodeMap = (0, _keyMap.keyMap)(
+        node.fields,
+        (field) => field.name.value,
+      );
+
+      for (const fieldDef of Object.values(type.getFields())) {
+        const fieldNode = fieldNodeMap[fieldDef.name];
+
+        if (!fieldNode && (0, _definition.isRequiredInputField)(fieldDef)) {
+          const typeStr = (0, _inspect.inspect)(fieldDef.type);
+          context.reportError(
+            new _GraphQLError.GraphQLError(
+              `Field "${type.name}.${fieldDef.name}" of required type "${typeStr}" was not provided.`,
+              {
+                nodes: node,
+              },
+            ),
+          );
+        }
+      }
+    },
+
+    ObjectField(node) {
+      const parentType = (0, _definition.getNamedType)(
+        context.getParentInputType(),
+      );
+      const fieldType = context.getInputType();
+
+      if (!fieldType && (0, _definition.isInputObjectType)(parentType)) {
+        const suggestions = (0, _suggestionList.suggestionList)(
+          node.name.value,
+          Object.keys(parentType.getFields()),
+        );
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Field "${node.name.value}" is not defined by type "${parentType.name}".` +
+              (0, _didYouMean.didYouMean)(suggestions),
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+
+    NullValue(node) {
+      const type = context.getInputType();
+
+      if ((0, _definition.isNonNullType)(type)) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Expected value of type "${(0, _inspect.inspect)(
+              type,
+            )}", found ${(0, _printer.print)(node)}.`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+
+    EnumValue: (node) => isValidValueNode(context, node),
+    IntValue: (node) => isValidValueNode(context, node),
+    FloatValue: (node) => isValidValueNode(context, node),
+    StringValue: (node) => isValidValueNode(context, node),
+    BooleanValue: (node) => isValidValueNode(context, node),
+  };
+}
+/**
+ * Any value literal may be a valid representation of a Scalar, depending on
+ * that scalar type.
+ */
+
+function isValidValueNode(context, node) {
+  // Report any error at the full type expected by the location.
+  const locationType = context.getInputType();
+
+  if (!locationType) {
+    return;
+  }
+
+  const type = (0, _definition.getNamedType)(locationType);
+
+  if (!(0, _definition.isLeafType)(type)) {
+    const typeStr = (0, _inspect.inspect)(locationType);
+    context.reportError(
+      new _GraphQLError.GraphQLError(
+        `Expected value of type "${typeStr}", found ${(0, _printer.print)(
+          node,
+        )}.`,
+        {
+          nodes: node,
+        },
+      ),
+    );
+    return;
+  } // Scalars and Enums determine if a literal value is valid via parseLiteral(),
+  // which may throw or return an invalid value to indicate failure.
+
+  try {
+    const parseResult = type.parseLiteral(
+      node,
+      undefined,
+      /* variables */
+    );
+
+    if (parseResult === undefined) {
+      const typeStr = (0, _inspect.inspect)(locationType);
+      context.reportError(
+        new _GraphQLError.GraphQLError(
+          `Expected value of type "${typeStr}", found ${(0, _printer.print)(
+            node,
+          )}.`,
+          {
+            nodes: node,
+          },
+        ),
+      );
+    }
+  } catch (error) {
+    const typeStr = (0, _inspect.inspect)(locationType);
+
+    if (error instanceof _GraphQLError.GraphQLError) {
+      context.reportError(error);
+    } else {
+      context.reportError(
+        new _GraphQLError.GraphQLError(
+          `Expected value of type "${typeStr}", found ${(0, _printer.print)(
+            node,
+          )}; ` + error.message,
+          {
+            nodes: node,
+            originalError: error,
+          },
+        ),
+      );
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/ValuesOfCorrectTypeRule.mjs

@@ -0,0 +1,173 @@
+import { didYouMean } from '../../jsutils/didYouMean.mjs';
+import { inspect } from '../../jsutils/inspect.mjs';
+import { keyMap } from '../../jsutils/keyMap.mjs';
+import { suggestionList } from '../../jsutils/suggestionList.mjs';
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { print } from '../../language/printer.mjs';
+import {
+  getNamedType,
+  getNullableType,
+  isInputObjectType,
+  isLeafType,
+  isListType,
+  isNonNullType,
+  isRequiredInputField,
+} from '../../type/definition.mjs';
+
+/**
+ * Value literals of correct type
+ *
+ * A GraphQL document is only valid if all value literals are of the type
+ * expected at their position.
+ *
+ * See https://spec.graphql.org/draft/#sec-Values-of-Correct-Type
+ */
+export function ValuesOfCorrectTypeRule(context) {
+  return {
+    ListValue(node) {
+      // Note: TypeInfo will traverse into a list's item type, so look to the
+      // parent input type to check if it is a list.
+      const type = getNullableType(context.getParentInputType());
+
+      if (!isListType(type)) {
+        isValidValueNode(context, node);
+        return false; // Don't traverse further.
+      }
+    },
+
+    ObjectValue(node) {
+      const type = getNamedType(context.getInputType());
+
+      if (!isInputObjectType(type)) {
+        isValidValueNode(context, node);
+        return false; // Don't traverse further.
+      } // Ensure every required field exists.
+
+      const fieldNodeMap = keyMap(node.fields, (field) => field.name.value);
+
+      for (const fieldDef of Object.values(type.getFields())) {
+        const fieldNode = fieldNodeMap[fieldDef.name];
+
+        if (!fieldNode && isRequiredInputField(fieldDef)) {
+          const typeStr = inspect(fieldDef.type);
+          context.reportError(
+            new GraphQLError(
+              `Field "${type.name}.${fieldDef.name}" of required type "${typeStr}" was not provided.`,
+              {
+                nodes: node,
+              },
+            ),
+          );
+        }
+      }
+    },
+
+    ObjectField(node) {
+      const parentType = getNamedType(context.getParentInputType());
+      const fieldType = context.getInputType();
+
+      if (!fieldType && isInputObjectType(parentType)) {
+        const suggestions = suggestionList(
+          node.name.value,
+          Object.keys(parentType.getFields()),
+        );
+        context.reportError(
+          new GraphQLError(
+            `Field "${node.name.value}" is not defined by type "${parentType.name}".` +
+              didYouMean(suggestions),
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+
+    NullValue(node) {
+      const type = context.getInputType();
+
+      if (isNonNullType(type)) {
+        context.reportError(
+          new GraphQLError(
+            `Expected value of type "${inspect(type)}", found ${print(node)}.`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+
+    EnumValue: (node) => isValidValueNode(context, node),
+    IntValue: (node) => isValidValueNode(context, node),
+    FloatValue: (node) => isValidValueNode(context, node),
+    StringValue: (node) => isValidValueNode(context, node),
+    BooleanValue: (node) => isValidValueNode(context, node),
+  };
+}
+/**
+ * Any value literal may be a valid representation of a Scalar, depending on
+ * that scalar type.
+ */
+
+function isValidValueNode(context, node) {
+  // Report any error at the full type expected by the location.
+  const locationType = context.getInputType();
+
+  if (!locationType) {
+    return;
+  }
+
+  const type = getNamedType(locationType);
+
+  if (!isLeafType(type)) {
+    const typeStr = inspect(locationType);
+    context.reportError(
+      new GraphQLError(
+        `Expected value of type "${typeStr}", found ${print(node)}.`,
+        {
+          nodes: node,
+        },
+      ),
+    );
+    return;
+  } // Scalars and Enums determine if a literal value is valid via parseLiteral(),
+  // which may throw or return an invalid value to indicate failure.
+
+  try {
+    const parseResult = type.parseLiteral(
+      node,
+      undefined,
+      /* variables */
+    );
+
+    if (parseResult === undefined) {
+      const typeStr = inspect(locationType);
+      context.reportError(
+        new GraphQLError(
+          `Expected value of type "${typeStr}", found ${print(node)}.`,
+          {
+            nodes: node,
+          },
+        ),
+      );
+    }
+  } catch (error) {
+    const typeStr = inspect(locationType);
+
+    if (error instanceof GraphQLError) {
+      context.reportError(error);
+    } else {
+      context.reportError(
+        new GraphQLError(
+          `Expected value of type "${typeStr}", found ${print(node)}; ` +
+            error.message,
+          {
+            nodes: node,
+            originalError: error,
+          },
+        ),
+      );
+    }
+  }
+}

graphql-subscription/node_modules/graphql/validation/rules/VariablesAreInputTypesRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Variables are input types
+ *
+ * A GraphQL operation is only valid if all the variables it defines are of
+ * input types (scalar, enum, or input object).
+ *
+ * See https://spec.graphql.org/draft/#sec-Variables-Are-Input-Types
+ */
+export declare function VariablesAreInputTypesRule(
+  context: ValidationContext,
+): ASTVisitor;

graphql-subscription/node_modules/graphql/validation/rules/VariablesAreInputTypesRule.js

@@ -0,0 +1,46 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.VariablesAreInputTypesRule = VariablesAreInputTypesRule;
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _printer = require('../../language/printer.js');
+
+var _definition = require('../../type/definition.js');
+
+var _typeFromAST = require('../../utilities/typeFromAST.js');
+
+/**
+ * Variables are input types
+ *
+ * A GraphQL operation is only valid if all the variables it defines are of
+ * input types (scalar, enum, or input object).
+ *
+ * See https://spec.graphql.org/draft/#sec-Variables-Are-Input-Types
+ */
+function VariablesAreInputTypesRule(context) {
+  return {
+    VariableDefinition(node) {
+      const type = (0, _typeFromAST.typeFromAST)(
+        context.getSchema(),
+        node.type,
+      );
+
+      if (type !== undefined && !(0, _definition.isInputType)(type)) {
+        const variableName = node.variable.name.value;
+        const typeName = (0, _printer.print)(node.type);
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Variable "$${variableName}" cannot be non-input type "${typeName}".`,
+            {
+              nodes: node.type,
+            },
+          ),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/VariablesAreInputTypesRule.mjs

@@ -0,0 +1,33 @@
+import { GraphQLError } from '../../error/GraphQLError.mjs';
+import { print } from '../../language/printer.mjs';
+import { isInputType } from '../../type/definition.mjs';
+import { typeFromAST } from '../../utilities/typeFromAST.mjs';
+
+/**
+ * Variables are input types
+ *
+ * A GraphQL operation is only valid if all the variables it defines are of
+ * input types (scalar, enum, or input object).
+ *
+ * See https://spec.graphql.org/draft/#sec-Variables-Are-Input-Types
+ */
+export function VariablesAreInputTypesRule(context) {
+  return {
+    VariableDefinition(node) {
+      const type = typeFromAST(context.getSchema(), node.type);
+
+      if (type !== undefined && !isInputType(type)) {
+        const variableName = node.variable.name.value;
+        const typeName = print(node.type);
+        context.reportError(
+          new GraphQLError(
+            `Variable "$${variableName}" cannot be non-input type "${typeName}".`,
+            {
+              nodes: node.type,
+            },
+          ),
+        );
+      }
+    },
+  };
+}

graphql-subscription/node_modules/graphql/validation/rules/VariablesInAllowedPositionRule.d.ts

@@ -0,0 +1,12 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ValidationContext } from '../ValidationContext';
+/**
+ * Variables in allowed position
+ *
+ * Variable usages must be compatible with the arguments they are passed to.
+ *
+ * See https://spec.graphql.org/draft/#sec-All-Variable-Usages-are-Allowed
+ */
+export declare function VariablesInAllowedPositionRule(
+  context: ValidationContext,
+): ASTVisitor;