Initial Sample.

graphql-subscription/node_modules/@apollo/client/utilities/subscriptions/relay/index.d.ts

@@ -0,0 +1,6 @@
+import { Observable } from "relay-runtime";
+import type { RequestParameters, GraphQLResponse } from "relay-runtime";
+import type { OperationVariables } from "../../../core/index.js";
+import type { CreateMultipartSubscriptionOptions } from "../shared.js";
+export declare function createFetchMultipartSubscription(uri: string, { fetch: preferredFetch, headers }?: CreateMultipartSubscriptionOptions): (operation: RequestParameters, variables: OperationVariables) => Observable<GraphQLResponse>;
+//# sourceMappingURL=index.d.ts.map

graphql-subscription/node_modules/@apollo/client/utilities/subscriptions/relay/index.js

@@ -0,0 +1,43 @@
+import { Observable } from "relay-runtime";
+import { handleError, readMultipartBody, } from "../../../link/http/parseAndCheckHttpResponse.js";
+import { maybe } from "../../index.js";
+import { serializeFetchParameter } from "../../../core/index.js";
+import { generateOptionsForMultipartSubscription } from "../shared.js";
+var backupFetch = maybe(function () { return fetch; });
+export function createFetchMultipartSubscription(uri, _a) {
+    var _b = _a === void 0 ? {} : _a, preferredFetch = _b.fetch, headers = _b.headers;
+    return function fetchMultipartSubscription(operation, variables) {
+        var body = {
+            operationName: operation.name,
+            variables: variables,
+            query: operation.text || "",
+        };
+        var options = generateOptionsForMultipartSubscription(headers || {});
+        return Observable.create(function (sink) {
+            try {
+                options.body = serializeFetchParameter(body, "Payload");
+            }
+            catch (parseError) {
+                sink.error(parseError);
+            }
+            var currentFetch = preferredFetch || maybe(function () { return fetch; }) || backupFetch;
+            var observerNext = sink.next.bind(sink);
+            currentFetch(uri, options)
+                .then(function (response) {
+                var _a;
+                var ctype = (_a = response.headers) === null || _a === void 0 ? void 0 : _a.get("content-type");
+                if (ctype !== null && /^multipart\/mixed/i.test(ctype)) {
+                    return readMultipartBody(response, observerNext);
+                }
+                sink.error(new Error("Expected multipart response"));
+            })
+                .then(function () {
+                sink.complete();
+            })
+                .catch(function (err) {
+                handleError(err, sink);
+            });
+        });
+    };
+}
+//# sourceMappingURL=index.js.map

graphql-subscription/node_modules/@apollo/client/utilities/subscriptions/relay/index.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../../../src/utilities/subscriptions/relay/index.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,UAAU,EAAE,MAAM,eAAe,CAAC;AAE3C,OAAO,EACL,WAAW,EACX,iBAAiB,GAClB,MAAM,iDAAiD,CAAC;AACzD,OAAO,EAAE,KAAK,EAAE,MAAM,gBAAgB,CAAC;AACvC,OAAO,EAAE,uBAAuB,EAAE,MAAM,wBAAwB,CAAC;AAIjE,OAAO,EAAE,uCAAuC,EAAE,MAAM,cAAc,CAAC;AAGvE,IAAM,WAAW,GAAG,KAAK,CAAC,cAAM,OAAA,KAAK,EAAL,CAAK,CAAC,CAAC;AAEvC,MAAM,UAAU,gCAAgC,CAC9C,GAAW,EACX,EAA2E;QAA3E,qBAAyE,EAAE,KAAA,EAAlE,cAAc,WAAA,EAAE,OAAO,aAAA;IAEhC,OAAO,SAAS,0BAA0B,CACxC,SAA4B,EAC5B,SAA6B;QAE7B,IAAM,IAAI,GAAS;YACjB,aAAa,EAAE,SAAS,CAAC,IAAI;YAC7B,SAAS,WAAA;YACT,KAAK,EAAE,SAAS,CAAC,IAAI,IAAI,EAAE;SAC5B,CAAC;QACF,IAAM,OAAO,GAAG,uCAAuC,CAAC,OAAO,IAAI,EAAE,CAAC,CAAC;QAEvE,OAAO,UAAU,CAAC,MAAM,CAAC,UAAC,IAAI;YAC5B,IAAI,CAAC;gBACH,OAAO,CAAC,IAAI,GAAG,uBAAuB,CAAC,IAAI,EAAE,SAAS,CAAC,CAAC;YAC1D,CAAC;YAAC,OAAO,UAAU,EAAE,CAAC;gBACpB,IAAI,CAAC,KAAK,CAAC,UAAmB,CAAC,CAAC;YAClC,CAAC;YAED,IAAM,YAAY,GAAG,cAAc,IAAI,KAAK,CAAC,cAAM,OAAA,KAAK,EAAL,CAAK,CAAC,IAAI,WAAW,CAAC;YACzE,IAAM,YAAY,GAAG,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YAE1C,YAAa,CAAC,GAAG,EAAE,OAAO,CAAC;iBACxB,IAAI,CAAC,UAAC,QAAQ;;gBACb,IAAM,KAAK,GAAG,MAAA,QAAQ,CAAC,OAAO,0CAAE,GAAG,CAAC,cAAc,CAAC,CAAC;gBAEpD,IAAI,KAAK,KAAK,IAAI,IAAI,oBAAoB,CAAC,IAAI,CAAC,KAAK,CAAC,EAAE,CAAC;oBACvD,OAAO,iBAAiB,CAAC,QAAQ,EAAE,YAAY,CAAC,CAAC;gBACnD,CAAC;gBAED,IAAI,CAAC,KAAK,CAAC,IAAI,KAAK,CAAC,6BAA6B,CAAC,CAAC,CAAC;YACvD,CAAC,CAAC;iBACD,IAAI,CAAC;gBACJ,IAAI,CAAC,QAAQ,EAAE,CAAC;YAClB,CAAC,CAAC;iBACD,KAAK,CAAC,UAAC,GAAQ;gBACd,WAAW,CAAC,GAAG,EAAE,IAAI,CAAC,CAAC;YACzB,CAAC,CAAC,CAAC;QACP,CAAC,CAAC,CAAC;IACL,CAAC,CAAC;AACJ,CAAC","sourcesContent":["import { Observable } from \"relay-runtime\";\nimport type { RequestParameters, GraphQLResponse } from \"relay-runtime\";\nimport {\n  handleError,\n  readMultipartBody,\n} from \"../../../link/http/parseAndCheckHttpResponse.js\";\nimport { maybe } from \"../../index.js\";\nimport { serializeFetchParameter } from \"../../../core/index.js\";\n\nimport type { OperationVariables } from \"../../../core/index.js\";\nimport type { Body } from \"../../../link/http/selectHttpOptionsAndBody.js\";\nimport { generateOptionsForMultipartSubscription } from \"../shared.js\";\nimport type { CreateMultipartSubscriptionOptions } from \"../shared.js\";\n\nconst backupFetch = maybe(() => fetch);\n\nexport function createFetchMultipartSubscription(\n  uri: string,\n  { fetch: preferredFetch, headers }: CreateMultipartSubscriptionOptions = {}\n) {\n  return function fetchMultipartSubscription(\n    operation: RequestParameters,\n    variables: OperationVariables\n  ): Observable<GraphQLResponse> {\n    const body: Body = {\n      operationName: operation.name,\n      variables,\n      query: operation.text || \"\",\n    };\n    const options = generateOptionsForMultipartSubscription(headers || {});\n\n    return Observable.create((sink) => {\n      try {\n        options.body = serializeFetchParameter(body, \"Payload\");\n      } catch (parseError) {\n        sink.error(parseError as Error);\n      }\n\n      const currentFetch = preferredFetch || maybe(() => fetch) || backupFetch;\n      const observerNext = sink.next.bind(sink);\n\n      currentFetch!(uri, options)\n        .then((response) => {\n          const ctype = response.headers?.get(\"content-type\");\n\n          if (ctype !== null && /^multipart\\/mixed/i.test(ctype)) {\n            return readMultipartBody(response, observerNext);\n          }\n\n          sink.error(new Error(\"Expected multipart response\"));\n        })\n        .then(() => {\n          sink.complete();\n        })\n        .catch((err: any) => {\n          handleError(err, sink);\n        });\n    });\n  };\n}\n"]}

graphql-subscription/node_modules/@apollo/client/utilities/subscriptions/relay/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "@apollo/client/utilities/subscriptions/relay",
+  "type": "module",
+  "main": "relay.cjs",
+  "module": "index.js",
+  "types": "index.d.ts",
+  "sideEffects": false
+}

graphql-subscription/node_modules/@apollo/client/utilities/subscriptions/relay/relay.cjs

@@ -0,0 +1,369 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var relayRuntime = require('relay-runtime');
+var tslib = require('tslib');
+var utilities = require('../..');
+var utils = require('../../../link/utils');
+var errors = require('../../../errors');
+var core = require('../../../core');
+
+function asyncIterator(source) {
+    var _a;
+    var iterator = source[Symbol.asyncIterator]();
+    return _a = {
+            next: function () {
+                return iterator.next();
+            }
+        },
+        _a[Symbol.asyncIterator] = function () {
+            return this;
+        },
+        _a;
+}
+
+function nodeStreamIterator(stream) {
+    var cleanup = null;
+    var error = null;
+    var done = false;
+    var data = [];
+    var waiting = [];
+    function onData(chunk) {
+        if (error)
+            return;
+        if (waiting.length) {
+            var shiftedArr = waiting.shift();
+            if (Array.isArray(shiftedArr) && shiftedArr[0]) {
+                return shiftedArr[0]({ value: chunk, done: false });
+            }
+        }
+        data.push(chunk);
+    }
+    function onError(err) {
+        error = err;
+        var all = waiting.slice();
+        all.forEach(function (pair) {
+            pair[1](err);
+        });
+        !cleanup || cleanup();
+    }
+    function onEnd() {
+        done = true;
+        var all = waiting.slice();
+        all.forEach(function (pair) {
+            pair[0]({ value: undefined, done: true });
+        });
+        !cleanup || cleanup();
+    }
+    cleanup = function () {
+        cleanup = null;
+        stream.removeListener("data", onData);
+        stream.removeListener("error", onError);
+        stream.removeListener("end", onEnd);
+        stream.removeListener("finish", onEnd);
+        stream.removeListener("close", onEnd);
+    };
+    stream.on("data", onData);
+    stream.on("error", onError);
+    stream.on("end", onEnd);
+    stream.on("finish", onEnd);
+    stream.on("close", onEnd);
+    function getNext() {
+        return new Promise(function (resolve, reject) {
+            if (error)
+                return reject(error);
+            if (data.length)
+                return resolve({ value: data.shift(), done: false });
+            if (done)
+                return resolve({ value: undefined, done: true });
+            waiting.push([resolve, reject]);
+        });
+    }
+    var iterator = {
+        next: function () {
+            return getNext();
+        },
+    };
+    if (utilities.canUseAsyncIteratorSymbol) {
+        iterator[Symbol.asyncIterator] = function () {
+            return this;
+        };
+    }
+    return iterator;
+}
+
+function promiseIterator(promise) {
+    var resolved = false;
+    var iterator = {
+        next: function () {
+            if (resolved)
+                return Promise.resolve({
+                    value: undefined,
+                    done: true,
+                });
+            resolved = true;
+            return new Promise(function (resolve, reject) {
+                promise
+                    .then(function (value) {
+                    resolve({ value: value, done: false });
+                })
+                    .catch(reject);
+            });
+        },
+    };
+    if (utilities.canUseAsyncIteratorSymbol) {
+        iterator[Symbol.asyncIterator] = function () {
+            return this;
+        };
+    }
+    return iterator;
+}
+
+function readerIterator(reader) {
+    var iterator = {
+        next: function () {
+            return reader.read();
+        },
+    };
+    if (utilities.canUseAsyncIteratorSymbol) {
+        iterator[Symbol.asyncIterator] = function () {
+            return this;
+        };
+    }
+    return iterator;
+}
+
+function isNodeResponse(value) {
+    return !!value.body;
+}
+function isReadableStream(value) {
+    return !!value.getReader;
+}
+function isAsyncIterableIterator(value) {
+    return !!(utilities.canUseAsyncIteratorSymbol &&
+        value[Symbol.asyncIterator]);
+}
+function isStreamableBlob(value) {
+    return !!value.stream;
+}
+function isBlob(value) {
+    return !!value.arrayBuffer;
+}
+function isNodeReadableStream(value) {
+    return !!value.pipe;
+}
+function responseIterator(response) {
+    var body = response;
+    if (isNodeResponse(response))
+        body = response.body;
+    if (isAsyncIterableIterator(body))
+        return asyncIterator(body);
+    if (isReadableStream(body))
+        return readerIterator(body.getReader());
+    if (isStreamableBlob(body)) {
+        return readerIterator(body.stream().getReader());
+    }
+    if (isBlob(body))
+        return promiseIterator(body.arrayBuffer());
+    if (isNodeReadableStream(body))
+        return nodeStreamIterator(body);
+    throw new Error("Unknown body type for responseIterator. Please pass a streamable response.");
+}
+
+function isNonNullObject(obj) {
+    return obj !== null && typeof obj === "object";
+}
+
+function isApolloPayloadResult(value) {
+    return isNonNullObject(value) && "payload" in value;
+}
+
+function readMultipartBody(response, nextValue) {
+    var _a;
+    return tslib.__awaiter(this, void 0, void 0, function () {
+        var decoder, contentType, delimiter, boundaryVal, boundary, buffer, iterator, running, _b, value, done, chunk, searchFrom, bi, message, i, headers, contentType_1, body, result, next;
+        var _c, _d;
+        return tslib.__generator(this, function (_e) {
+            switch (_e.label) {
+                case 0:
+                    if (TextDecoder === undefined) {
+                        throw new Error("TextDecoder must be defined in the environment: please import a polyfill.");
+                    }
+                    decoder = new TextDecoder("utf-8");
+                    contentType = (_a = response.headers) === null || _a === void 0 ? void 0 : _a.get("content-type");
+                    delimiter = "boundary=";
+                    boundaryVal = (contentType === null || contentType === void 0 ? void 0 : contentType.includes(delimiter)) ?
+                        contentType === null || contentType === void 0 ? void 0 : contentType.substring((contentType === null || contentType === void 0 ? void 0 : contentType.indexOf(delimiter)) + delimiter.length).replace(/['"]/g, "").replace(/\;(.*)/gm, "").trim()
+                        : "-";
+                    boundary = "\r\n--".concat(boundaryVal);
+                    buffer = "";
+                    iterator = responseIterator(response);
+                    running = true;
+                    _e.label = 1;
+                case 1:
+                    if (!running) return [3 , 3];
+                    return [4 , iterator.next()];
+                case 2:
+                    _b = _e.sent(), value = _b.value, done = _b.done;
+                    chunk = typeof value === "string" ? value : decoder.decode(value);
+                    searchFrom = buffer.length - boundary.length + 1;
+                    running = !done;
+                    buffer += chunk;
+                    bi = buffer.indexOf(boundary, searchFrom);
+                    while (bi > -1) {
+                        message = void 0;
+                        _c = [
+                            buffer.slice(0, bi),
+                            buffer.slice(bi + boundary.length),
+                        ], message = _c[0], buffer = _c[1];
+                        i = message.indexOf("\r\n\r\n");
+                        headers = parseHeaders(message.slice(0, i));
+                        contentType_1 = headers["content-type"];
+                        if (contentType_1 &&
+                            contentType_1.toLowerCase().indexOf("application/json") === -1) {
+                            throw new Error("Unsupported patch content type: application/json is required.");
+                        }
+                        body = message.slice(i);
+                        if (body) {
+                            result = parseJsonBody(response, body);
+                            if (Object.keys(result).length > 1 ||
+                                "data" in result ||
+                                "incremental" in result ||
+                                "errors" in result ||
+                                "payload" in result) {
+                                if (isApolloPayloadResult(result)) {
+                                    next = {};
+                                    if ("payload" in result) {
+                                        next = tslib.__assign({}, result.payload);
+                                    }
+                                    if ("errors" in result) {
+                                        next = tslib.__assign(tslib.__assign({}, next), { extensions: tslib.__assign(tslib.__assign({}, ("extensions" in next ? next.extensions : null)), (_d = {}, _d[errors.PROTOCOL_ERRORS_SYMBOL] = result.errors, _d)) });
+                                    }
+                                    nextValue(next);
+                                }
+                                else {
+                                    nextValue(result);
+                                }
+                            }
+                            else if (
+                            Object.keys(result).length === 1 &&
+                                "hasNext" in result &&
+                                !result.hasNext) {
+                                return [2 ];
+                            }
+                        }
+                        bi = buffer.indexOf(boundary);
+                    }
+                    return [3 , 1];
+                case 3: return [2 ];
+            }
+        });
+    });
+}
+function parseHeaders(headerText) {
+    var headersInit = {};
+    headerText.split("\n").forEach(function (line) {
+        var i = line.indexOf(":");
+        if (i > -1) {
+            var name_1 = line.slice(0, i).trim().toLowerCase();
+            var value = line.slice(i + 1).trim();
+            headersInit[name_1] = value;
+        }
+    });
+    return headersInit;
+}
+function parseJsonBody(response, bodyText) {
+    if (response.status >= 300) {
+        var getResult = function () {
+            try {
+                return JSON.parse(bodyText);
+            }
+            catch (err) {
+                return bodyText;
+            }
+        };
+        utils.throwServerError(response, getResult(), "Response not successful: Received status code ".concat(response.status));
+    }
+    try {
+        return JSON.parse(bodyText);
+    }
+    catch (err) {
+        var parseError = err;
+        parseError.name = "ServerParseError";
+        parseError.response = response;
+        parseError.statusCode = response.status;
+        parseError.bodyText = bodyText;
+        throw parseError;
+    }
+}
+function handleError(err, observer) {
+    if (err.result && err.result.errors && err.result.data) {
+        observer.next(err.result);
+    }
+    observer.error(err);
+}
+
+var defaultHttpOptions = {
+    includeQuery: true,
+    includeExtensions: false,
+    preserveHeaderCase: false,
+};
+var defaultHeaders = {
+    accept: "*/*",
+    "content-type": "application/json",
+};
+var defaultOptions = {
+    method: "POST",
+};
+var fallbackHttpConfig = {
+    http: defaultHttpOptions,
+    headers: defaultHeaders,
+    options: defaultOptions,
+};
+
+function generateOptionsForMultipartSubscription(headers) {
+    var options = tslib.__assign(tslib.__assign({}, fallbackHttpConfig.options), { headers: tslib.__assign(tslib.__assign(tslib.__assign({}, (headers || {})), fallbackHttpConfig.headers), { accept: "multipart/mixed;boundary=graphql;subscriptionSpec=1.0,application/json" }) });
+    return options;
+}
+
+var backupFetch = utilities.maybe(function () { return fetch; });
+function createFetchMultipartSubscription(uri, _a) {
+    var _b = _a === void 0 ? {} : _a, preferredFetch = _b.fetch, headers = _b.headers;
+    return function fetchMultipartSubscription(operation, variables) {
+        var body = {
+            operationName: operation.name,
+            variables: variables,
+            query: operation.text || "",
+        };
+        var options = generateOptionsForMultipartSubscription(headers || {});
+        return relayRuntime.Observable.create(function (sink) {
+            try {
+                options.body = core.serializeFetchParameter(body, "Payload");
+            }
+            catch (parseError) {
+                sink.error(parseError);
+            }
+            var currentFetch = preferredFetch || utilities.maybe(function () { return fetch; }) || backupFetch;
+            var observerNext = sink.next.bind(sink);
+            currentFetch(uri, options)
+                .then(function (response) {
+                var _a;
+                var ctype = (_a = response.headers) === null || _a === void 0 ? void 0 : _a.get("content-type");
+                if (ctype !== null && /^multipart\/mixed/i.test(ctype)) {
+                    return readMultipartBody(response, observerNext);
+                }
+                sink.error(new Error("Expected multipart response"));
+            })
+                .then(function () {
+                sink.complete();
+            })
+                .catch(function (err) {
+                handleError(err, sink);
+            });
+        });
+    };
+}
+
+exports.createFetchMultipartSubscription = createFetchMultipartSubscription;
+//# sourceMappingURL=relay.cjs.map

graphql-subscription/node_modules/@apollo/client/utilities/subscriptions/relay/relay.cjs.native.js

@@ -0,0 +1,369 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var relayRuntime = require('relay-runtime');
+var tslib = require('tslib');
+var utilities = require('../..');
+var utils = require('../../../link/utils');
+var errors = require('../../../errors');
+var core = require('../../../core');
+
+function asyncIterator(source) {
+    var _a;
+    var iterator = source[Symbol.asyncIterator]();
+    return _a = {
+            next: function () {
+                return iterator.next();
+            }
+        },
+        _a[Symbol.asyncIterator] = function () {
+            return this;
+        },
+        _a;
+}
+
+function nodeStreamIterator(stream) {
+    var cleanup = null;
+    var error = null;
+    var done = false;
+    var data = [];
+    var waiting = [];
+    function onData(chunk) {
+        if (error)
+            return;
+        if (waiting.length) {
+            var shiftedArr = waiting.shift();
+            if (Array.isArray(shiftedArr) && shiftedArr[0]) {
+                return shiftedArr[0]({ value: chunk, done: false });
+            }
+        }
+        data.push(chunk);
+    }
+    function onError(err) {
+        error = err;
+        var all = waiting.slice();
+        all.forEach(function (pair) {
+            pair[1](err);
+        });
+        !cleanup || cleanup();
+    }
+    function onEnd() {
+        done = true;
+        var all = waiting.slice();
+        all.forEach(function (pair) {
+            pair[0]({ value: undefined, done: true });
+        });
+        !cleanup || cleanup();
+    }
+    cleanup = function () {
+        cleanup = null;
+        stream.removeListener("data", onData);
+        stream.removeListener("error", onError);
+        stream.removeListener("end", onEnd);
+        stream.removeListener("finish", onEnd);
+        stream.removeListener("close", onEnd);
+    };
+    stream.on("data", onData);
+    stream.on("error", onError);
+    stream.on("end", onEnd);
+    stream.on("finish", onEnd);
+    stream.on("close", onEnd);
+    function getNext() {
+        return new Promise(function (resolve, reject) {
+            if (error)
+                return reject(error);
+            if (data.length)
+                return resolve({ value: data.shift(), done: false });
+            if (done)
+                return resolve({ value: undefined, done: true });
+            waiting.push([resolve, reject]);
+        });
+    }
+    var iterator = {
+        next: function () {
+            return getNext();
+        },
+    };
+    if (utilities.canUseAsyncIteratorSymbol) {
+        iterator[Symbol.asyncIterator] = function () {
+            return this;
+        };
+    }
+    return iterator;
+}
+
+function promiseIterator(promise) {
+    var resolved = false;
+    var iterator = {
+        next: function () {
+            if (resolved)
+                return Promise.resolve({
+                    value: undefined,
+                    done: true,
+                });
+            resolved = true;
+            return new Promise(function (resolve, reject) {
+                promise
+                    .then(function (value) {
+                    resolve({ value: value, done: false });
+                })
+                    .catch(reject);
+            });
+        },
+    };
+    if (utilities.canUseAsyncIteratorSymbol) {
+        iterator[Symbol.asyncIterator] = function () {
+            return this;
+        };
+    }
+    return iterator;
+}
+
+function readerIterator(reader) {
+    var iterator = {
+        next: function () {
+            return reader.read();
+        },
+    };
+    if (utilities.canUseAsyncIteratorSymbol) {
+        iterator[Symbol.asyncIterator] = function () {
+            return this;
+        };
+    }
+    return iterator;
+}
+
+function isNodeResponse(value) {
+    return !!value.body;
+}
+function isReadableStream(value) {
+    return !!value.getReader;
+}
+function isAsyncIterableIterator(value) {
+    return !!(utilities.canUseAsyncIteratorSymbol &&
+        value[Symbol.asyncIterator]);
+}
+function isStreamableBlob(value) {
+    return !!value.stream;
+}
+function isBlob(value) {
+    return !!value.arrayBuffer;
+}
+function isNodeReadableStream(value) {
+    return !!value.pipe;
+}
+function responseIterator(response) {
+    var body = response;
+    if (isNodeResponse(response))
+        body = response.body;
+    if (isAsyncIterableIterator(body))
+        return asyncIterator(body);
+    if (isReadableStream(body))
+        return readerIterator(body.getReader());
+    if (isStreamableBlob(body)) {
+        return readerIterator(body.stream().getReader());
+    }
+    if (isBlob(body))
+        return promiseIterator(body.arrayBuffer());
+    if (isNodeReadableStream(body))
+        return nodeStreamIterator(body);
+    throw new Error("Unknown body type for responseIterator. Please pass a streamable response.");
+}
+
+function isNonNullObject(obj) {
+    return obj !== null && typeof obj === "object";
+}
+
+function isApolloPayloadResult(value) {
+    return isNonNullObject(value) && "payload" in value;
+}
+
+function readMultipartBody(response, nextValue) {
+    var _a;
+    return tslib.__awaiter(this, void 0, void 0, function () {
+        var decoder, contentType, delimiter, boundaryVal, boundary, buffer, iterator, running, _b, value, done, chunk, searchFrom, bi, message, i, headers, contentType_1, body, result, next;
+        var _c, _d;
+        return tslib.__generator(this, function (_e) {
+            switch (_e.label) {
+                case 0:
+                    if (TextDecoder === undefined) {
+                        throw new Error("TextDecoder must be defined in the environment: please import a polyfill.");
+                    }
+                    decoder = new TextDecoder("utf-8");
+                    contentType = (_a = response.headers) === null || _a === void 0 ? void 0 : _a.get("content-type");
+                    delimiter = "boundary=";
+                    boundaryVal = (contentType === null || contentType === void 0 ? void 0 : contentType.includes(delimiter)) ?
+                        contentType === null || contentType === void 0 ? void 0 : contentType.substring((contentType === null || contentType === void 0 ? void 0 : contentType.indexOf(delimiter)) + delimiter.length).replace(/['"]/g, "").replace(/\;(.*)/gm, "").trim()
+                        : "-";
+                    boundary = "\r\n--".concat(boundaryVal);
+                    buffer = "";
+                    iterator = responseIterator(response);
+                    running = true;
+                    _e.label = 1;
+                case 1:
+                    if (!running) return [3 , 3];
+                    return [4 , iterator.next()];
+                case 2:
+                    _b = _e.sent(), value = _b.value, done = _b.done;
+                    chunk = typeof value === "string" ? value : decoder.decode(value);
+                    searchFrom = buffer.length - boundary.length + 1;
+                    running = !done;
+                    buffer += chunk;
+                    bi = buffer.indexOf(boundary, searchFrom);
+                    while (bi > -1) {
+                        message = void 0;
+                        _c = [
+                            buffer.slice(0, bi),
+                            buffer.slice(bi + boundary.length),
+                        ], message = _c[0], buffer = _c[1];
+                        i = message.indexOf("\r\n\r\n");
+                        headers = parseHeaders(message.slice(0, i));
+                        contentType_1 = headers["content-type"];
+                        if (contentType_1 &&
+                            contentType_1.toLowerCase().indexOf("application/json") === -1) {
+                            throw new Error("Unsupported patch content type: application/json is required.");
+                        }
+                        body = message.slice(i);
+                        if (body) {
+                            result = parseJsonBody(response, body);
+                            if (Object.keys(result).length > 1 ||
+                                "data" in result ||
+                                "incremental" in result ||
+                                "errors" in result ||
+                                "payload" in result) {
+                                if (isApolloPayloadResult(result)) {
+                                    next = {};
+                                    if ("payload" in result) {
+                                        next = tslib.__assign({}, result.payload);
+                                    }
+                                    if ("errors" in result) {
+                                        next = tslib.__assign(tslib.__assign({}, next), { extensions: tslib.__assign(tslib.__assign({}, ("extensions" in next ? next.extensions : null)), (_d = {}, _d[errors.PROTOCOL_ERRORS_SYMBOL] = result.errors, _d)) });
+                                    }
+                                    nextValue(next);
+                                }
+                                else {
+                                    nextValue(result);
+                                }
+                            }
+                            else if (
+                            Object.keys(result).length === 1 &&
+                                "hasNext" in result &&
+                                !result.hasNext) {
+                                return [2 ];
+                            }
+                        }
+                        bi = buffer.indexOf(boundary);
+                    }
+                    return [3 , 1];
+                case 3: return [2 ];
+            }
+        });
+    });
+}
+function parseHeaders(headerText) {
+    var headersInit = {};
+    headerText.split("\n").forEach(function (line) {
+        var i = line.indexOf(":");
+        if (i > -1) {
+            var name_1 = line.slice(0, i).trim().toLowerCase();
+            var value = line.slice(i + 1).trim();
+            headersInit[name_1] = value;
+        }
+    });
+    return headersInit;
+}
+function parseJsonBody(response, bodyText) {
+    if (response.status >= 300) {
+        var getResult = function () {
+            try {
+                return JSON.parse(bodyText);
+            }
+            catch (err) {
+                return bodyText;
+            }
+        };
+        utils.throwServerError(response, getResult(), "Response not successful: Received status code ".concat(response.status));
+    }
+    try {
+        return JSON.parse(bodyText);
+    }
+    catch (err) {
+        var parseError = err;
+        parseError.name = "ServerParseError";
+        parseError.response = response;
+        parseError.statusCode = response.status;
+        parseError.bodyText = bodyText;
+        throw parseError;
+    }
+}
+function handleError(err, observer) {
+    if (err.result && err.result.errors && err.result.data) {
+        observer.next(err.result);
+    }
+    observer.error(err);
+}
+
+var defaultHttpOptions = {
+    includeQuery: true,
+    includeExtensions: false,
+    preserveHeaderCase: false,
+};
+var defaultHeaders = {
+    accept: "*/*",
+    "content-type": "application/json",
+};
+var defaultOptions = {
+    method: "POST",
+};
+var fallbackHttpConfig = {
+    http: defaultHttpOptions,
+    headers: defaultHeaders,
+    options: defaultOptions,
+};
+
+function generateOptionsForMultipartSubscription(headers) {
+    var options = tslib.__assign(tslib.__assign({}, fallbackHttpConfig.options), { headers: tslib.__assign(tslib.__assign(tslib.__assign({}, (headers || {})), fallbackHttpConfig.headers), { accept: "multipart/mixed;boundary=graphql;subscriptionSpec=1.0,application/json" }) });
+    return options;
+}
+
+var backupFetch = utilities.maybe(function () { return fetch; });
+function createFetchMultipartSubscription(uri, _a) {
+    var _b = _a === void 0 ? {} : _a, preferredFetch = _b.fetch, headers = _b.headers;
+    return function fetchMultipartSubscription(operation, variables) {
+        var body = {
+            operationName: operation.name,
+            variables: variables,
+            query: operation.text || "",
+        };
+        var options = generateOptionsForMultipartSubscription(headers || {});
+        return relayRuntime.Observable.create(function (sink) {
+            try {
+                options.body = core.serializeFetchParameter(body, "Payload");
+            }
+            catch (parseError) {
+                sink.error(parseError);
+            }
+            var currentFetch = preferredFetch || utilities.maybe(function () { return fetch; }) || backupFetch;
+            var observerNext = sink.next.bind(sink);
+            currentFetch(uri, options)
+                .then(function (response) {
+                var _a;
+                var ctype = (_a = response.headers) === null || _a === void 0 ? void 0 : _a.get("content-type");
+                if (ctype !== null && /^multipart\/mixed/i.test(ctype)) {
+                    return readMultipartBody(response, observerNext);
+                }
+                sink.error(new Error("Expected multipart response"));
+            })
+                .then(function () {
+                sink.complete();
+            })
+                .catch(function (err) {
+                handleError(err, sink);
+            });
+        });
+    };
+}
+
+exports.createFetchMultipartSubscription = createFetchMultipartSubscription;
+//# sourceMappingURL=relay.cjs.map