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Aleksey-Danchin/byProgress.js

Created April 15, 2022 08:24
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Декоратор для отслеживания прогресса загрузки ответа.
Raw
byProgress.js
async function byProgress(response, progressHandler) {
const reader = response.body.getReader();
const chunks = [];
let length = 0;
while (true) {
const { done, value } = await reader.read();
if (done) {
break;
}
chunks.push(value);
length += value.length;
progressHandler(length);
}
const buff = new Uint8Array(length);
let index = 0;
for (const chunk of chunks) {
buff.set(chunk, index);
index += chunk.length;
}
return new TextDecoder("utf-8").decode(buff);
}
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