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@babel/plugin-transform-object-super

信息

此插件包含在 @babel/preset-env 中

¥This plugin is included in @babel/preset-env

示例​

¥Examples

输入

¥In

JavaScript
let obj = {
  say() {
    return "Hello";
  },
};

let obj2 = {
  say() {
    return super.say() + "World!";
  },
};

输出

¥Out

JavaScript
var _obj;

var _get = function get(object, property, receiver) {
  if (object === null) object = Function.prototype;
  var desc = Object.getOwnPropertyDescriptor(object, property);
  if (desc === undefined) {
    var parent = Object.getPrototypeOf(object);
    if (parent === null) {
      return undefined;
    } else {
      return get(parent, property, receiver);
    }
  } else if ("value" in desc) {
    return desc.value;
  } else {
    var getter = desc.get;
    if (getter === undefined) {
      return undefined;
    }
    return getter.call(receiver);
  }
};

var obj = {
  say: function say() {
    return "Hello";
  },
};

var obj2 = (_obj = {
  say: function say() {
    return (
      _get(_obj.__proto__ || Object.getPrototypeOf(_obj), "say", this).call(
        this
      ) + "World!"
    );
  },
});

安装​

¥Installation

npm install --save-dev @babel/plugin-transform-object-super

用法​

¥Usage

¥With a configuration file (Recommended)

babel.config.json
{
  "plugins": ["@babel/plugin-transform-object-super"]
}

通过 CLI​

¥Via CLI

Shell
babel --plugins @babel/plugin-transform-object-super script.js

通过 Node API​

¥Via Node API

JavaScript
require("@babel/core").transformSync("code", {
  plugins: ["@babel/plugin-transform-object-super"],
});