javascript - 无法让 browserify 使用 babel-plugin-transform-class-properties

Question

我正在尝试使用 MobX在我的项目中，我正在尝试使用类属性。但是，当我运行 browserify (使用 Laravel's Elixir )时。我收到错误缺少类属性转换。解析文件时。我是否缺少一些让类属性与 browserify 一起使用的功能？

Browserify Failed!: /Users/.../resources/assets/js/pages/Show/CampaignStore.js: Missing class properties transform. while parsing file: /Users/.../resources/assets/js/pages/Show/CampaignStore.js
 Missing class properties transform.
  2 |
  3 | class CampaignStore {
> 4 |   id = Math.random();
    |   ^
  5 |   @observable title = '';
  6 |   @observable messages = [];
  7 |

我的 .babelrc 文件:

{
  "presets": [
    "es2015",
    "react",
    "stage-0"
  ],
  "plugins": ["transform-decorators-legacy", "transform-class-properties"]
}

类(class)

import { observable, computed } from 'mobx';

class CampaignStore {
  id = Math.random();
  @observable title = '';
  @observable messages = [];

  // ...
}

gulpfile.js

require('dotenv').config();
var elixir = require('laravel-elixir');

var HOST = process.env.SERVER || 'http://localhost';

elixir.config.js.browserify.transformers.push({
    name: 'babelify',
    options: {
        presets: ["es2015", "react", "stage-1"],
        plugins: ["transform-class-properties"]
    }
});

elixir(function(mix) {
    mix.browserify('pages/Show.js', 'public/js/bundles/show.js');

    mix.sass('clean.scss');

    mix.browserSync({
        proxy: HOST
    });
});

Answer 1

您应该完全覆盖 babelify 转换器:

elixir.config.js.browserify.transformers
  .find(transformer => transformer.name === 'babelify')
  .options = {
    presets: ['es2015', 'react', 'stage-1'],
    plugins: ['transform-class-properties'],
  };

或者只使用相同的 babel 配置文件:

elixir.config.js.browserify.transformers
  .find(transformer => transformer.name === 'babelify')
  .options = require('./package.json').babel;