Browserify，Babel 6，Gulp - 传播运算符上的意外令牌

2022-01-12 00:00:00 javascript gulp ecmascript-6 browserify babeljs

我正在尝试让我的 Browserify/Babelify/Gulp 在我的项目中工作，但它不会使用扩展运算符.

I'm trying to get my Browserify/Babelify/Gulp working in my project, but it won't take the spread operator.

我从我的 gulpfile 中得到了这个错误:

I got this error from my gulpfile:

[SyntaxError: /Users/mboutin2/Desktop/Todo-tutorial/src/reducers/grocery-list-reducers.js: Unexpected token (16:8) while parsing file: /Users/mboutin2/Desktop/Todo-tutorial/src/reducers/grocery-list-reducers.js]

这是我的 gulpfile.js

This is my gulpfile.js

var gulp = require('gulp');
var source = require('vinyl-source-stream');
var browserify = require('browserify');
var sourcemaps = require('gulp-sourcemaps');
var uglify = require('gulp-uglify');
var buffer = require('vinyl-buffer');
var babelify = require('babelify');

gulp.task('build', function () {
  return browserify({entries: './src/client/app.js', extensions: ['.js'], debug: true})
    .transform(babelify, {presets: ['es2015', 'react']})
    .bundle()
    .on('error', function (err) {
      console.error(err);
      this.emit('end');
    })
    .pipe(source('app.min.js'))
    .pipe(buffer())
    .pipe(sourcemaps.init({loadMaps: true}))
    .pipe(uglify())
    .pipe(sourcemaps.write('./'))
    .pipe(gulp.dest('./public/js'));
});

gulp.task('default', ['build']);

我尝试创建一个 .babelrc 文件，但它做同样的事情.当我删除传播运算符时，我的脚本就可以工作了.

I tried to create a .babelrc file, but it do the same thing. And my script works when i delete the spread operator.

这是出现 Unexpected token 的文件(很简单).

This is the file where the Unexpected token occurs (quite simple).

import utils from '../utils/consts';

const initialState = {
  itemList: [
    {name: 'Apple', type: 'Fruit'},
    {name: 'Beef', type: 'Meat'}
  ]
};

export function groceryList(state = initialState, action = {}) {

  switch(action.type) {

    case utils.ACTIONS.ITEM_SUBMIT:
      return {
        ...state,
        itemList: [
          ...state.itemList,
          {name: action.name, type: action.itemType}
        ]
      };

    default:
      return state;

  }
}

我不知道这有什么问题，我在 Github 和 Babel 网站上的设置页面上阅读了一些问题，但我无法使其正常工作.

I don't know what doesn't work in this, i read some issues on Github and the setup page on Babel website, but i can't make it work correctly.

谁能告诉我如何正确处理这个问题?谢谢

Can anyone show me how to handle this correctly? Thank you

推荐答案

该语法是未来的实验性提议语法，它不属于 es2015 或 react所以你需要启用它.

That syntax is an experimental proposed syntax for the future, it is not part of es2015 or react so you'll need to enable it.

npm install --save-dev babel-plugin-transform-object-rest-spread

并添加

"plugins": ["transform-object-rest-spread"]

进入 .babelrc 以及你现有的 presets.

into .babelrc alongside your existing presets.

或者:

npm install --save-dev babel-preset-stage-3

并在您的预设中使用 stage-3 来启用所有 stage-3 实验功能.

and use stage-3 in your presets to enable all stage-3 experimental functionality.

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