Function to intercept functions calls even to nativ functions.

intercept-function.js

const interceptFunction = (object, fnName, options) => {
  const noop = () => {}
  const fnToWrap = object[fnName]
  const before = options.before || noop
  const after = options.after || noop

  object[fnName] = function (...args) {
    before.apply(this, args)
    const result = fnToWrap.apply(this, args)
    after.apply(this, args, result)
    return result
  }
}