wecui/packages/wecui-css/node_modules/core-js/modules/_an-instance.js

一款基于Vue2.x版本的移动端web组件

module.exports = function (it, Constructor, name, forbiddenField) {
  if (!(it instanceof Constructor) || (forbiddenField !== undefined && forbiddenField in it)) {
    throw TypeError(name + ': incorrect invocation!');
  } return it;
};