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Perf: make readline interface creation faster

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This commit is contained in:
SukkaW 2024-05-02 18:43:25 +08:00
parent e5d511d105
commit 986cfc8ff4
1 changed files with 8 additions and 3 deletions
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11
Build/lib/fetch-text-by-line.ts
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@ -11,9 +11,14 @@ const decoder = new TextDecoder('utf-8');
async function *createTextLineAsyncIterableFromStreamSource(stream: ReadableStream<Uint8Array>): AsyncIterable<string> {
let buf = '';
// @ts-expect-error -- ReadableStream<Uint8Array> should be AsyncIterable<Uint8Array>
for await (const chunk of stream) {
const chunkStr = decoder.decode(chunk).replaceAll('\r\n', '\n');
const reader = stream.getReader();
while (true) {
const res = await reader.read();
if (res.done) {
break;
}
const chunkStr = decoder.decode(res.value).replaceAll('\r\n', '\n');
for (let i = 0, len = chunkStr.length; i < len; i++) {
const char = chunkStr[i];
if (char === '\n') {