/** * @param {number} start * @param {number} end */ export function range(start, end) { const range = []; while (start <= end) { range.push(start); start += 1; } return range; } /** * @template T * @param {T[]} array */ export function randomFromArray(array) { return array[Math.floor(Math.random() * array.length)]; } /** * Typed Object.entries that preserves key types * @template {Record} T * @param {T} obj * @returns {[keyof T & string, T[keyof T & string]][]} */ export const entries = (obj) => /** @type {[keyof T & string, T[keyof T & string]][]} */ (Object.entries(obj)); /** * Type-safe includes that narrows the value type * @template T * @param {readonly T[]} arr * @param {unknown} value * @returns {value is T} */ export const includes = (arr, value) => arr.includes(/** @type {T} */ (value));