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Perf: compare and write file in worker

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SukkaW
2025-03-31 00:53:07 +08:00
parent 830ef80f7b
commit 8cefcf740c
4 changed files with 72 additions and 3 deletions
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4
Build/lib/create-file.ts
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@@ -48,8 +48,6 @@ export async function fileEqual(linesA: string[], source: AsyncIterable<string>
}
export async function compareAndWriteFile(span: Span, linesA: string[], filePath: string) {
const linesALen = linesA.length;
const isEqual = await span.traceChildAsync(`compare ${filePath}`, async () => {
if (fs.existsSync(filePath)) {
return fileEqual(linesA, readFileByLine(filePath));
@@ -65,6 +63,8 @@ export async function compareAndWriteFile(span: Span, linesA: string[], filePath
}
await span.traceChildAsync(`writing ${filePath}`, async () => {
const linesALen = linesA.length;
// The default highwater mark is normally 16384,
// So we make sure direct write to file if the content is
// most likely less than 500 lines