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40 lines
992 B
Text
40 lines
992 B
Text
/*
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Copyright 2019 Google LLC
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Use of this source code is governed by an MIT-style
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license that can be found in the LICENSE file or at
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https://opensource.org/licenses/MIT.
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*/
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import '../_version.js';
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let supportStatus: boolean | undefined;
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/**
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* A utility function that determines whether the current browser supports
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* constructing a new `Response` from a `response.body` stream.
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*
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* @return {boolean} `true`, if the current browser can successfully
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* construct a `Response` from a `response.body` stream, `false` otherwise.
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*
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* @private
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*/
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function canConstructResponseFromBodyStream(): boolean {
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if (supportStatus === undefined) {
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const testResponse = new Response('');
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if ('body' in testResponse) {
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try {
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new Response(testResponse.body);
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supportStatus = true;
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} catch (error) {
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supportStatus = false;
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}
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}
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supportStatus = false;
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}
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return supportStatus;
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}
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export {canConstructResponseFromBodyStream};
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