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Diffstat (limited to 'node_modules/workbox-streams/isSupported.mjs')
| -rw-r--r-- | node_modules/workbox-streams/isSupported.mjs | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/node_modules/workbox-streams/isSupported.mjs b/node_modules/workbox-streams/isSupported.mjs deleted file mode 100644 index 21027dd2..00000000 --- a/node_modules/workbox-streams/isSupported.mjs +++ /dev/null @@ -1,45 +0,0 @@ -/* - 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. -*/ - -import './_version.mjs'; - -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; -} - -export {isSupported}; |
