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20 lines
797 B
TypeScript
20 lines
797 B
TypeScript
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/**
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* Format the wall-clock duration between a run/step's start and finish
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* timestamps into a compact, human-readable label (e.g. `850ms`, `4.2s`,
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* `1m 30s`). Returns `null` when either bound is missing or the delta is
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* negative/non-finite, so callers can simply omit the label.
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*/
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export function formatDuration(
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started: string | null | undefined,
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finished: string | null | undefined
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): string | null {
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if (!started || !finished) return null;
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const ms = new Date(finished).getTime() - new Date(started).getTime();
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if (!Number.isFinite(ms) || ms < 0) return null;
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if (ms < 1000) return `${ms}ms`;
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if (ms < 60_000) return `${(ms / 1000).toFixed(1)}s`;
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const minutes = Math.floor(ms / 60_000);
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const seconds = Math.floor((ms % 60_000) / 1000);
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return `${minutes}m ${seconds}s`;
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}
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