381 lines
13 KiB
JavaScript
381 lines
13 KiB
JavaScript
this.workbox = this.workbox || {};
|
|
this.workbox.streams = (function (exports,logger_mjs,assert_mjs) {
|
|
'use strict';
|
|
|
|
try {
|
|
self.workbox.v['workbox:streams:3.6.3'] = 1;
|
|
} catch (e) {} // eslint-disable-line
|
|
|
|
/*
|
|
Copyright 2018 Google Inc. All Rights Reserved.
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* Takes either a Response, a ReadableStream, or a
|
|
* [BodyInit](https://fetch.spec.whatwg.org/#bodyinit) and returns the
|
|
* ReadableStreamReader object associated with it.
|
|
*
|
|
* @param {workbox.streams.StreamSource} source
|
|
* @return {ReadableStreamReader}
|
|
* @private
|
|
*/
|
|
function _getReaderFromSource(source) {
|
|
if (source.body && source.body.getReader) {
|
|
return source.body.getReader();
|
|
}
|
|
|
|
if (source.getReader) {
|
|
return source.getReader();
|
|
}
|
|
|
|
// TODO: This should be possible to do by constructing a ReadableStream, but
|
|
// I can't get it to work. As a hack, construct a new Response, and use the
|
|
// reader associated with its body.
|
|
return new Response(source).body.getReader();
|
|
}
|
|
|
|
/**
|
|
* Takes multiple source Promises, each of which could resolve to a Response, a
|
|
* ReadableStream, or a [BodyInit](https://fetch.spec.whatwg.org/#bodyinit).
|
|
*
|
|
* Returns an object exposing a ReadableStream with each individual stream's
|
|
* data returned in sequence, along with a Promise which signals when the
|
|
* stream is finished (useful for passing to a FetchEvent's waitUntil()).
|
|
*
|
|
* @param {Array<Promise<workbox.streams.StreamSource>>} sourcePromises
|
|
* @return {Object<{done: Promise, stream: ReadableStream}>}
|
|
*
|
|
* @memberof workbox.streams
|
|
*/
|
|
function concatenate(sourcePromises) {
|
|
{
|
|
assert_mjs.assert.isArray(sourcePromises, {
|
|
moduleName: 'workbox-streams',
|
|
funcName: 'concatenate',
|
|
paramName: 'sourcePromises'
|
|
});
|
|
}
|
|
|
|
const readerPromises = sourcePromises.map(sourcePromise => {
|
|
return Promise.resolve(sourcePromise).then(source => {
|
|
return _getReaderFromSource(source);
|
|
});
|
|
});
|
|
|
|
let fullyStreamedResolve;
|
|
let fullyStreamedReject;
|
|
const done = new Promise((resolve, reject) => {
|
|
fullyStreamedResolve = resolve;
|
|
fullyStreamedReject = reject;
|
|
});
|
|
|
|
let i = 0;
|
|
const logMessages = [];
|
|
const stream = new ReadableStream({
|
|
pull(controller) {
|
|
return readerPromises[i].then(reader => reader.read()).then(result => {
|
|
if (result.done) {
|
|
{
|
|
logMessages.push(['Reached the end of source:', sourcePromises[i]]);
|
|
}
|
|
|
|
i++;
|
|
if (i >= readerPromises.length) {
|
|
// Log all the messages in the group at once in a single group.
|
|
{
|
|
logger_mjs.logger.groupCollapsed(`Concatenating ${readerPromises.length} sources.`);
|
|
for (const message of logMessages) {
|
|
if (Array.isArray(message)) {
|
|
logger_mjs.logger.log(...message);
|
|
} else {
|
|
logger_mjs.logger.log(message);
|
|
}
|
|
}
|
|
logger_mjs.logger.log('Finished reading all sources.');
|
|
logger_mjs.logger.groupEnd();
|
|
}
|
|
|
|
controller.close();
|
|
fullyStreamedResolve();
|
|
return;
|
|
}
|
|
|
|
return this.pull(controller);
|
|
} else {
|
|
controller.enqueue(result.value);
|
|
}
|
|
}).catch(error => {
|
|
{
|
|
logger_mjs.logger.error('An error occurred:', error);
|
|
}
|
|
fullyStreamedReject(error);
|
|
throw error;
|
|
});
|
|
},
|
|
|
|
cancel() {
|
|
{
|
|
logger_mjs.logger.warn('The ReadableStream was cancelled.');
|
|
}
|
|
|
|
fullyStreamedResolve();
|
|
}
|
|
});
|
|
|
|
return { done, stream };
|
|
}
|
|
|
|
/*
|
|
Copyright 2018 Google Inc. All Rights Reserved.
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* This is a utility method that determines whether the current browser supports
|
|
* the features required to create streamed responses. Currently, it checks if
|
|
* [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream/ReadableStream)
|
|
* is available.
|
|
*
|
|
* @param {HeadersInit} [headersInit] If there's no `Content-Type` specified,
|
|
* `'text/html'` will be used by default.
|
|
* @return {boolean} `true`, if the current browser meets the requirements for
|
|
* streaming responses, and `false` otherwise.
|
|
*
|
|
* @memberof workbox.streams
|
|
*/
|
|
function createHeaders(headersInit = {}) {
|
|
// See https://github.com/GoogleChrome/workbox/issues/1461
|
|
const headers = new Headers(headersInit);
|
|
if (!headers.has('content-type')) {
|
|
headers.set('content-type', 'text/html');
|
|
}
|
|
return headers;
|
|
}
|
|
|
|
/*
|
|
Copyright 2018 Google Inc. All Rights Reserved.
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* Takes multiple source Promises, each of which could resolve to a Response, a
|
|
* ReadableStream, or a [BodyInit](https://fetch.spec.whatwg.org/#bodyinit),
|
|
* along with a
|
|
* [HeadersInit](https://fetch.spec.whatwg.org/#typedefdef-headersinit).
|
|
*
|
|
* Returns an object exposing a Response whose body consists of each individual
|
|
* stream's data returned in sequence, along with a Promise which signals when
|
|
* the stream is finished (useful for passing to a FetchEvent's waitUntil()).
|
|
*
|
|
* @param {Array<Promise<workbox.streams.StreamSource>>} sourcePromises
|
|
* @param {HeadersInit} [headersInit] If there's no `Content-Type` specified,
|
|
* `'text/html'` will be used by default.
|
|
* @return {Object<{done: Promise, response: Response}>}
|
|
*
|
|
* @memberof workbox.streams
|
|
*/
|
|
function concatenateToResponse(sourcePromises, headersInit) {
|
|
const { done, stream } = concatenate(sourcePromises);
|
|
|
|
const headers = createHeaders(headersInit);
|
|
const response = new Response(stream, { headers });
|
|
|
|
return { done, response };
|
|
}
|
|
|
|
/*
|
|
Copyright 2018 Google Inc. All Rights Reserved.
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
let cachedIsSupported = undefined;
|
|
|
|
/**
|
|
* This is a utility method that determines whether the current browser supports
|
|
* the features required to create streamed responses. Currently, it checks if
|
|
* [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream/ReadableStream)
|
|
* can be created.
|
|
*
|
|
* @return {boolean} `true`, if the current browser meets the requirements for
|
|
* streaming responses, and `false` otherwise.
|
|
*
|
|
* @memberof workbox.streams
|
|
*/
|
|
function isSupported() {
|
|
if (cachedIsSupported === undefined) {
|
|
// See https://github.com/GoogleChrome/workbox/issues/1473
|
|
try {
|
|
new ReadableStream({ start() {} });
|
|
cachedIsSupported = true;
|
|
} catch (error) {
|
|
cachedIsSupported = false;
|
|
}
|
|
}
|
|
|
|
return cachedIsSupported;
|
|
}
|
|
|
|
/*
|
|
Copyright 2018 Google Inc. All Rights Reserved.
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* A shortcut to create a strategy that could be dropped-in to Workbox's router.
|
|
*
|
|
* On browsers that do not support constructing new `ReadableStream`s, this
|
|
* strategy will automatically wait for all the `sourceFunctions` to complete,
|
|
* and create a final response that concatenates their values together.
|
|
*
|
|
* @param {
|
|
* Array<function(workbox.routing.Route~handlerCallback)>} sourceFunctions
|
|
* Each function should return a {@link workbox.streams.StreamSource} (or a
|
|
* Promise which resolves to one).
|
|
* @param {HeadersInit} [headersInit] If there's no `Content-Type` specified,
|
|
* `'text/html'` will be used by default.
|
|
* @return {workbox.routing.Route~handlerCallback}
|
|
*
|
|
* @memberof workbox.streams
|
|
*/
|
|
function strategy(sourceFunctions, headersInit) {
|
|
return (() => {
|
|
var _ref = babelHelpers.asyncToGenerator(function* ({ event, url, params }) {
|
|
if (isSupported()) {
|
|
const { done, response } = concatenateToResponse(sourceFunctions.map(function (sourceFunction) {
|
|
return sourceFunction({ event, url, params });
|
|
}), headersInit);
|
|
event.waitUntil(done);
|
|
return response;
|
|
}
|
|
|
|
{
|
|
logger_mjs.logger.log(`The current browser doesn't support creating response ` + `streams. Falling back to non-streaming response instead.`);
|
|
}
|
|
|
|
// Fallback to waiting for everything to finish, and concatenating the
|
|
// responses.
|
|
const parts = yield Promise.all(sourceFunctions.map(function (sourceFunction) {
|
|
return sourceFunction({ event, url, params });
|
|
}).map((() => {
|
|
var _ref2 = babelHelpers.asyncToGenerator(function* (responsePromise) {
|
|
const response = yield responsePromise;
|
|
if (response instanceof Response) {
|
|
return response.blob();
|
|
}
|
|
|
|
// Otherwise, assume it's something like a string which can be used
|
|
// as-is when constructing the final composite blob.
|
|
return response;
|
|
});
|
|
|
|
return function (_x2) {
|
|
return _ref2.apply(this, arguments);
|
|
};
|
|
})()));
|
|
|
|
const headers = createHeaders(headersInit);
|
|
// Constructing a new Response from a Blob source is well-supported.
|
|
// So is constructing a new Blob from multiple source Blobs or strings.
|
|
return new Response(new Blob(parts), { headers });
|
|
});
|
|
|
|
return function (_x) {
|
|
return _ref.apply(this, arguments);
|
|
};
|
|
})();
|
|
}
|
|
|
|
/*
|
|
Copyright 2018 Google Inc.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
https://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
Copyright 2018 Google Inc.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
https://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
exports.concatenate = concatenate;
|
|
exports.concatenateToResponse = concatenateToResponse;
|
|
exports.isSupported = isSupported;
|
|
exports.strategy = strategy;
|
|
|
|
return exports;
|
|
|
|
}({},workbox.core._private,workbox.core._private));
|
|
|
|
//# sourceMappingURL=workbox-streams.dev.js.map
|