can1357
f41705ce3a
- Added Python prelude caching to improve startup performance by caching helper functions and module discovery results. - Added OMP_DEBUG_STARTUP environment variable for detailed startup stage tracing across initialization pipeline. - Changed Python kernel initialization to require shared gateway mode, removing support for local kernel gateway startup. - Improved error handling in shared gateway acquisition with automatic retries on 5xx status codes. - Added repro-stuck.ts script for reproducing and debugging rare CLI hang issues with Chrome DevTools integration. - Added trace-loader.ts preload script for tracing module resolution during startup diagnostics.
34 lines
979 B
TypeScript
34 lines
979 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 = performance.now();
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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 = (performance.now() - startTime).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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