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