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@babel/plugin-proposal-destructuring-private

将私有解构 var { #y: y } = this 转换为 var y = this.#y。

¥Transforms private destructuring var { #y: y } = this to var y = this.#y.

示例​

¥Example

JavaScript
class Foo {
  x;
  #y;
  equalsTo({ x, #y: y }) {
    return this.x === x && this.#y === y;
  }
}

将转变为

¥will be transformed to

JavaScript
class Foo {
  x;
  #y;
  equalsTo(_p) {
    var { x } = _p, y = _p.#y;
    return this.x === x && this.#y === y;
  }
}

该插件尊重这些编译器假设：

¥The plugin respects these compiler assumptions:

安装​

¥Installation

npm install --save-dev @babel/plugin-proposal-destructuring-private

用法​

¥Usage

¥With a configuration file (Recommended)

babel.config.json
{
  "plugins": ["@babel/plugin-proposal-destructuring-private"]
}

由于输出代码包含私有字段，如果你已经在使用其他类功能插件（例如 `@babel/plugin-transform-class-properties），请务必将其放在其他插件之前。

¥Because the output code includes private fields, if you are already using other class feature plugins (e.g. `@babel/plugin-transform-class-properties), be sure to place it before the others.

babel.config.json
{
  "plugins": [
    "@babel/plugin-proposal-destructuring-private",
    "@babel/plugin-transform-class-properties"
  ]
}

通过 CLI​

¥Via CLI

Shell
babel --plugins @babel/plugin-proposal-destructuring-private script.js

通过 Node API​

¥Via Node API

JavaScript
require("@babel/core").transformSync("code", {
  plugins: ["@babel/plugin-proposal-destructuring-private"],
});

参考​

¥References