手写Promise.race()

//实现Promise.race()
/**
 * @param {Promise[]} arr
 * @return {Promise}
 */
const p1 = new Promise((r, j) => setTimeout(r, 1000, "oneSuccess"))
const p2 = new Promise((r, j) => setTimeout(r, 2000, "twoSuccess"))
const p3 = new Promise((r, j) => setTimeout(j, 500, "threeError"))

Promise.prototype.myRace = function (arrP) {
  let hasValue = false
  let hasError = false
  return new Promise((resolve, reject) => {
    for (let i = 0; i < arrP.length; i++) {
      arrP[i].then(data => {
        !hasValue && !hasError && resolve(data)
        hasValue = true
      }, error => {
        !hasValue && !hasError && reject(error)
        hasError = true
      })
    }
  })
}
Promise.prototype.myRace([p1, p2, p3]).then((res) => {
  console.log(res);
}).catch((err) => {
  console.log(err);
})