Question

使用babel-preset-env，babel-polyfill库构建。

错误：未处理的promise promise TypeError：方法Promise.prototype.then调用不兼容的接收函数（t）{this._c = []，this._a = void 0，this._s = 0，this._d =！1，this._v = void 0，this._h = 0，this._n =！1}

getEvents: async function() {
    const response = await fetch(
        '/api/v1/event/'
      {
        credentials: 'same-origin'
      }
    );

    // get Success
    this.events = await response.json();
    ...
}

的package.json

"babel-polyfill": "^6.23.0",
"babel-plugin-transform-object-rest-spread": "^6.26.0",
"babel-plugin-transform-remove-strict-mode": "0.0.2",
"babel-preset-env": "^1.6.0",
"grunt-babel": "^6.0.0",

如果有人知道造成这种情况的原因，请回答。

我认为可能是一个承诺polyfill问题..因为 function(t){this._c=[],this._a=void 0,this._s=0,this._d=!1,this._v=void 0,this._h=0,this._n=!1}此函数来自promise polyfill ..

babel-polyfil模块中的stacktrace。

var $resolve = function (value) {
  var promise = this;
  var then;
  if (promise._d) return;
  promise._d = true;
  promise = promise._w || promise; // unwrap
  try {
    if (promise === value) throw TypeError("Promise can't be resolved itself");
    if (then = isThenable(value)) {
      microtask(function () {
        var wrapper = { _w: promise, _d: false }; // wrap
        try {

错误发生在下一行

          then.call(value, ctx($resolve, wrapper, 1), ctx($reject, wrapper, 1)); 
        } catch (e) {
          $reject.call(wrapper, e);
        }
      });
    } else {
      promise._v = value;
      promise._s = 1;
      notify(promise, false);
    }
  } catch (e) {
    $reject.call({ _w: promise, _d: false }, e); // wrap
  }
};

抱歉，我无法重新生成错误..我记得它是在该行中触发的。

未处理的promise promise TypeError：方法Promise.prototype.then在不兼容的接收器上调用

0 个答案: