217 lines
7.7 KiB
JavaScript
217 lines
7.7 KiB
JavaScript
'use strict';
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var protocolHttp = require('@smithy/protocol-http');
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var querystringBuilder = require('@smithy/querystring-builder');
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var utilBase64 = require('@smithy/util-base64');
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function createRequest(url, requestOptions) {
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return new Request(url, requestOptions);
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}
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function requestTimeout(timeoutInMs = 0) {
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return new Promise((resolve, reject) => {
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if (timeoutInMs) {
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setTimeout(() => {
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const timeoutError = new Error(`Request did not complete within ${timeoutInMs} ms`);
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timeoutError.name = "TimeoutError";
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reject(timeoutError);
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}, timeoutInMs);
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}
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});
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}
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const keepAliveSupport = {
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supported: undefined,
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};
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class FetchHttpHandler {
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config;
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configProvider;
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static create(instanceOrOptions) {
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if (typeof instanceOrOptions?.handle === "function") {
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return instanceOrOptions;
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}
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return new FetchHttpHandler(instanceOrOptions);
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}
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constructor(options) {
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if (typeof options === "function") {
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this.configProvider = options().then((opts) => opts || {});
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}
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else {
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this.config = options ?? {};
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this.configProvider = Promise.resolve(this.config);
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}
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if (keepAliveSupport.supported === undefined) {
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keepAliveSupport.supported = Boolean(typeof Request !== "undefined" && "keepalive" in createRequest("https://[::1]"));
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}
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}
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destroy() {
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}
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async handle(request, { abortSignal, requestTimeout: requestTimeout$1 } = {}) {
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if (!this.config) {
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this.config = await this.configProvider;
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}
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const requestTimeoutInMs = requestTimeout$1 ?? this.config.requestTimeout;
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const keepAlive = this.config.keepAlive === true;
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const credentials = this.config.credentials;
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if (abortSignal?.aborted) {
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const abortError = new Error("Request aborted");
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abortError.name = "AbortError";
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return Promise.reject(abortError);
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}
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let path = request.path;
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const queryString = querystringBuilder.buildQueryString(request.query || {});
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if (queryString) {
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path += `?${queryString}`;
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}
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if (request.fragment) {
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path += `#${request.fragment}`;
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}
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let auth = "";
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if (request.username != null || request.password != null) {
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const username = request.username ?? "";
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const password = request.password ?? "";
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auth = `${username}:${password}@`;
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}
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const { port, method } = request;
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const url = `${request.protocol}//${auth}${request.hostname}${port ? `:${port}` : ""}${path}`;
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const body = method === "GET" || method === "HEAD" ? undefined : request.body;
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const requestOptions = {
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body,
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headers: new Headers(request.headers),
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method: method,
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credentials,
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};
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if (this.config?.cache) {
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requestOptions.cache = this.config.cache;
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}
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if (body) {
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requestOptions.duplex = "half";
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}
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if (typeof AbortController !== "undefined") {
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requestOptions.signal = abortSignal;
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}
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if (keepAliveSupport.supported) {
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requestOptions.keepalive = keepAlive;
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}
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if (typeof this.config.requestInit === "function") {
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Object.assign(requestOptions, this.config.requestInit(request));
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}
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let removeSignalEventListener = () => { };
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const fetchRequest = createRequest(url, requestOptions);
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const raceOfPromises = [
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fetch(fetchRequest).then((response) => {
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const fetchHeaders = response.headers;
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const transformedHeaders = {};
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for (const pair of fetchHeaders.entries()) {
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transformedHeaders[pair[0]] = pair[1];
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}
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const hasReadableStream = response.body != undefined;
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if (!hasReadableStream) {
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return response.blob().then((body) => ({
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response: new protocolHttp.HttpResponse({
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headers: transformedHeaders,
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reason: response.statusText,
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statusCode: response.status,
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body,
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}),
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}));
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}
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return {
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response: new protocolHttp.HttpResponse({
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headers: transformedHeaders,
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reason: response.statusText,
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statusCode: response.status,
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body: response.body,
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}),
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};
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}),
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requestTimeout(requestTimeoutInMs),
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];
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if (abortSignal) {
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raceOfPromises.push(new Promise((resolve, reject) => {
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const onAbort = () => {
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const abortError = new Error("Request aborted");
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abortError.name = "AbortError";
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reject(abortError);
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};
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if (typeof abortSignal.addEventListener === "function") {
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const signal = abortSignal;
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signal.addEventListener("abort", onAbort, { once: true });
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removeSignalEventListener = () => signal.removeEventListener("abort", onAbort);
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}
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else {
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abortSignal.onabort = onAbort;
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}
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}));
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}
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return Promise.race(raceOfPromises).finally(removeSignalEventListener);
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}
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updateHttpClientConfig(key, value) {
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this.config = undefined;
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this.configProvider = this.configProvider.then((config) => {
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config[key] = value;
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return config;
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});
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}
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httpHandlerConfigs() {
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return this.config ?? {};
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}
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}
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const streamCollector = async (stream) => {
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if ((typeof Blob === "function" && stream instanceof Blob) || stream.constructor?.name === "Blob") {
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if (Blob.prototype.arrayBuffer !== undefined) {
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return new Uint8Array(await stream.arrayBuffer());
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}
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return collectBlob(stream);
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}
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return collectStream(stream);
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};
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async function collectBlob(blob) {
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const base64 = await readToBase64(blob);
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const arrayBuffer = utilBase64.fromBase64(base64);
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return new Uint8Array(arrayBuffer);
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}
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async function collectStream(stream) {
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const chunks = [];
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const reader = stream.getReader();
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let isDone = false;
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let length = 0;
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while (!isDone) {
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const { done, value } = await reader.read();
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if (value) {
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chunks.push(value);
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length += value.length;
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}
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isDone = done;
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}
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const collected = new Uint8Array(length);
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let offset = 0;
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for (const chunk of chunks) {
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collected.set(chunk, offset);
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offset += chunk.length;
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}
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return collected;
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}
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function readToBase64(blob) {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.onloadend = () => {
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if (reader.readyState !== 2) {
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return reject(new Error("Reader aborted too early"));
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}
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const result = (reader.result ?? "");
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const commaIndex = result.indexOf(",");
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const dataOffset = commaIndex > -1 ? commaIndex + 1 : result.length;
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resolve(result.substring(dataOffset));
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};
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reader.onabort = () => reject(new Error("Read aborted"));
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reader.onerror = () => reject(reader.error);
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reader.readAsDataURL(blob);
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});
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}
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exports.FetchHttpHandler = FetchHttpHandler;
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exports.keepAliveSupport = keepAliveSupport;
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exports.streamCollector = streamCollector;
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