2754. 将函数绑定到上下文

2754. 将函数绑定到上下文

type Fn = (...args) => any

interface Function {
  bindPolyfill(obj: Record<any, any>): Fn
}

Function.prototype.bindPolyfill = function (
  this: Fn,
  obj: Record<any, any>,
  ...args: any[]
): Fn {
  const originalFn = this
  return function (...innerArgs: any[]) {
    return originalFn.apply(obj, [...args, ...innerArgs])
  }
}