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export default class MyCalendar {    #booked: [number, number][] = [];    book(start: number, end: number): boolean {        const booked = this.#booked;        if (booked.length) {            let left = 0;            let right = booked.length;
            while (left < right) {                const mid = Math.floor((left + right) / 2);
                const [s, e] = booked[mid];                if (start >= e) {                    left = mid + 1;                } else if (end <= s) {                    right = mid;                } else {                    return false;                }            }
            booked.splice(left, 0, [start, end]);            return true;        } else {            booked.push([start, end]);            return true;        }    }}