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