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25 lines
731 B
TypeScript
25 lines
731 B
TypeScript
/**
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* Central timing instrumentation for startup profiling.
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* Enable with PI_TIMING=1 environment variable.
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*/
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const ENABLED = process.env.PI_TIMING === "1";
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const timings: Array<{ label: string; ms: number }> = [];
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let lastTime = Date.now();
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export function time(label: string): void {
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if (!ENABLED) return;
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const now = Date.now();
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timings.push({ label, ms: now - lastTime });
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lastTime = now;
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}
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export function printTimings(): void {
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if (!ENABLED || timings.length === 0) return;
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console.error("\n--- Startup Timings ---");
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for (const t of timings) {
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console.error(` ${t.label}: ${t.ms}ms`);
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}
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console.error(` TOTAL: ${timings.reduce((a, b) => a + b.ms, 0)}ms`);
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console.error("------------------------\n");
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}
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