mirror of https://github.com/jkjoy/sunpeiwen.git
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{"version":3,"file":"workbox-streams.dev.js","sources":["../_version.js","../concatenate.js","../utils/createHeaders.js","../concatenateToResponse.js","../isSupported.js","../strategy.js"],"sourcesContent":["\"use strict\";\n// @ts-ignore\ntry {\n self['workbox:streams:6.5.3'] && _();\n}\ncatch (e) { }\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\nimport { assert } from 'workbox-core/_private/assert.js';\nimport { Deferred } from 'workbox-core/_private/Deferred.js';\nimport { logger } from 'workbox-core/_private/logger.js';\nimport { WorkboxError } from 'workbox-core/_private/WorkboxError.js';\nimport './_version.js';\n/**\n * Takes either a Response, a ReadableStream, or a\n * [BodyInit](https://fetch.spec.whatwg.org/#bodyinit) and returns the\n * ReadableStreamReader object associated with it.\n *\n * @param {workbox-streams.StreamSource} source\n * @return {ReadableStreamReader}\n * @private\n */\nfunction _getReaderFromSource(source) {\n if (source instanceof Response) {\n // See https://github.com/GoogleChrome/workbox/issues/2998\n if (source.body) {\n return source.body.getReader();\n }\n throw new WorkboxError('opaque-streams-source', { type: source.type });\n }\n if (source instanceof ReadableStream) {\n return source.getReader();\n }\n return new Response(source).body.getReader();\n}\n/**\n * Takes multiple source Promises, each of which could resolve to a Response, a\n * ReadableStream, or a [BodyInit](https://fetch.spec.whatwg.org/#bodyinit).\n *\n * Returns an object exposing a ReadableStream with each individual stream's\n * data returned in sequence, along with a Promise which signals when the\n * stream is finished (useful for passing to a FetchEvent's waitUntil()).\n *\n * @param {Array<Promise<workbox-streams.StreamSource>>} sourcePromises\n * @return {Object<{done: Promise, stream: ReadableStream}>}\n *\n * @memberof workbox-streams\n */\nfunction concatenate(sourcePromises) {\n if (process.env.NODE_ENV !== 'production') {\n assert.isArray(sourcePromises, {\n moduleName: 'workbox-streams',\n funcName: 'concatenate',\n paramName: 'sourcePromises',\n });\n }\n const readerPromises = sourcePromises.map((sourcePromise) => {\n return Promise.resolve(sourcePromise).then((source) => {\n return _getReaderFromSource(source);\n });\n });\n const streamDeferred = new Deferred();\n let i = 0;\n const logMessages = [];\n const stream = new ReadableStream({\n pull(controller) {\n return readerPromises[i]\n .then((reader) => reader.read())\n .then((result) => {\n if (result.done) {\n if (process.env.NODE_ENV !== 'production') {\n logMessages.push([\n 'Reached the end of source:',\n sourcePromises[i],\n ]);\n }\n i++;\n if (i >= readerPromises.length) {\n // Log all the messages in the group at once in a single group.\n if (process.env.NODE_ENV !== 'production') {\n logger.groupCollapsed(`Concatenating ${readerPromises.length} sources.`);\n for (const message of logMessages) {\n if (Array.isArray(message)) {\n logger.log(...message);\n }\n else {\n logger.log(message);\n }\n }\n logger.log('Finished reading all sources.');\n logger.groupEnd();\n }\n controller.close();\
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