expect(parseRelativeTime("1h30m")).toBe(90 * 60_000);

});

it("parses separated relative time tokens", () => {

expect(parseRelativeTime("1h 30m")).toBe(90 * 60_000);

});

it("parses days", () => {

expect(parseRelativeTime("2d")).toBe(2 * 86_400_000);

});

it("returns null for unparseable input", () => {

expect(parseRelativeTime("never")).toBeNull();

expect(parseRelativeTime("5m later")).toBeNull();

expect(parseRelativeTime("about 5m")).toBeNull();

});

it("is case insensitive", () => {

* @returns Milliseconds or null if unparseable.

*/

export function parseRelativeTime(timeStr: string): number | null {

const s = timeStr.toLowerCase();

const s = timeStr.trim().toLowerCase();

if (/^\d+$/.test(s)) {

return Number.parseInt(s, 10) * 60_000;

}

let totalMs = 0;

let matched = false;

const regex = /(\d+(?:\.\d+)?)\s*(d|h|m|s)/g;

let consumed = 0;

const regex = /(\d+(?:\.\d+)?)\s*(d|h|m|s)\s*/g;

let match: RegExpExecArray | null;

while ((match = regex.exec(s)) !== null) {

if (match.index !== consumed) {

return null;

}

matched = true;

consumed = regex.lastIndex;

const value = Number.parseFloat(match[1]);

const unit = match[2];

switch (unit) {

break;

}

}

return matched ? Math.round(totalMs) : null;

return matched && consumed === s.length ? Math.round(totalMs) : null;

}

/**