import toNumber from './toNumber.js'

/**
 * Invokes `func` after `wait` milliseconds. Any additional arguments are
 * provided to `func` when it's invoked.
 *
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to delay.
 * @param {number} wait The number of milliseconds to delay invocation.
 * @param {...*} [args] The arguments to invoke `func` with.
 * @returns {number} Returns the timer id.
 * @example
 *
 * delay(text => console.log(text), 1000, 'later')
 * // => Logs 'later' after one second.
 */
function delay(func, wait, ...args) {
  if (typeof func != 'function') {
    throw new TypeError('Expected a function')
  }
  return setTimeout(func, toNumber(wait) || 0, ...args)
}

export default delay

我把源码贴出来了，其实就是做了一层封装，本质上没什么区别，但是加了错误处理，并提供了一些附加解决方法，提高了容错率吧