Kristaps Fabians Geikins
19 lines
769 B
JavaScript
19 lines
769 B
JavaScript
/**
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* This adjusts a browser ReadableStream to make it work similarly to Node streams, which further enables us to use the
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* same code to read both kinds of streams. We don't mutate the ReadableStream prototype cause this specific polyfill
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* might not work well in other circumstances (https://github.com/node-fetch/node-fetch/issues/387#issuecomment-417433509)
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*
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* See more: https://github.com/node-fetch/node-fetch/issues/754#issuecomment-602184022
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* @param {ReadableStream} stream
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*/
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export function polyfillReadableStreamForAsyncIterator(stream) {
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stream.iterator = async function* () {
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const reader = this.getReader()
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while (1) {
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const chunk = await reader.read()
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if (chunk.done) return chunk.value
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yield chunk.value
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}
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}
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}
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