can1357
37c74bb19d
- Migrated timing measurements from `performance.now()` to `Bun.nanoseconds()` for higher precision benchmarking across all benchmark and timing-sensitive code. - Updated elapsed time calculations to convert nanoseconds to milliseconds using division by 1e6 to maintain consistent time units. - Increased benchmark precision from 4 to 6 decimal places for per-operation timing measurements. - Refactored grep benchmark to use averaged timing values instead of storing individual iteration times, reducing memory overhead.
34 lines
987 B
TypeScript
34 lines
987 B
TypeScript
/**
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* Bun preload script that traces module resolution.
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* Usage: bun --preload ./scripts/trace-loader.ts <script>
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*/
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const startTime = Bun.nanoseconds();
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const resolved = new Set<string>();
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Bun.plugin({
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name: "trace-loader",
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setup(build) {
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// Trace module resolution (doesn't interfere with loading)
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build.onResolve({ filter: /.*/ }, (args) => {
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// Skip if already traced this path
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if (resolved.has(args.path)) {
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return undefined;
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}
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resolved.add(args.path);
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const elapsed = ((Bun.nanoseconds() - startTime) / 1e6).toFixed(1);
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// Only trace local/project files, not node_modules
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if (!args.path.includes("node_modules") && !args.path.startsWith("node:")) {
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const shortPath = args.path.replace(process.cwd(), ".");
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process.stderr.write(`[${elapsed}ms] resolve: ${shortPath}\n`);
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}
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// Return undefined to let Bun handle resolution normally
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return undefined;
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});
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},
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});
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process.stderr.write(`[trace-loader] preload active\n`);
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