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32 lines
1.0 KiB
32 lines
1.0 KiB
import { GraphQLError } from '../../../error/GraphQLError.mjs'; |
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import { getNamedType } from '../../../type/definition.mjs'; |
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import { isIntrospectionType } from '../../../type/introspection.mjs'; |
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/** |
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* Prohibit introspection queries |
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* |
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* A GraphQL document is only valid if all fields selected are not fields that |
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* return an introspection type. |
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* |
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* Note: This rule is optional and is not part of the Validation section of the |
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* GraphQL Specification. This rule effectively disables introspection, which |
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* does not reflect best practices and should only be done if absolutely necessary. |
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*/ |
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export function NoSchemaIntrospectionCustomRule(context) { |
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return { |
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Field(node) { |
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const type = getNamedType(context.getType()); |
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if (type && isIntrospectionType(type)) { |
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context.reportError( |
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new GraphQLError( |
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`GraphQL introspection has been disabled, but the requested query contained the field "${node.name.value}".`, |
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{ |
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nodes: node, |
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}, |
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), |
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); |
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} |
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}, |
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}; |
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}
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