28 lines
818 B
TypeScript
28 lines
818 B
TypeScript
export type DurationMsParseOptions = {
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defaultUnit?: "ms" | "s" | "m";
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};
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export function parseDurationMs(
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raw: string,
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opts?: DurationMsParseOptions,
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): number {
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const trimmed = String(raw ?? "")
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.trim()
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.toLowerCase();
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if (!trimmed) throw new Error("invalid duration (empty)");
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const m = /^(\d+(?:\.\d+)?)(ms|s|m)?$/.exec(trimmed);
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if (!m) throw new Error(`invalid duration: ${raw}`);
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const value = Number(m[1]);
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if (!Number.isFinite(value) || value < 0) {
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throw new Error(`invalid duration: ${raw}`);
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}
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const unit = (m[2] ?? opts?.defaultUnit ?? "ms") as "ms" | "s" | "m";
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const multiplier = unit === "ms" ? 1 : unit === "s" ? 1000 : 60_000;
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const ms = Math.round(value * multiplier);
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if (!Number.isFinite(ms)) throw new Error(`invalid duration: ${raw}`);
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return ms;
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}
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