問題描述

我正在嘗試讓我的 Browserify/Babelify/Gulp 在我的項目中工作，但它不會使用擴展運算符.

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

我從我的 gulpfile 中得到了這個錯誤:

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]

這是我的 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']);

我嘗試創建一個 .babelrc 文件，但它做同樣的事情.當我刪除傳播運算符時，我的腳本就可以工作了.

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

這是出現 Unexpected token 的文件(很簡單).

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;

  }
}

我不知道這有什么問題，我在 Github 和 Babel 網站上的設置頁面上閱讀了一些問題，但我無法使其正常工作.

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.

誰能告訴我如何正確處理這個問題?謝謝

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

推薦答案

該語法是未來的實驗性提議語法，它不屬于 es2015 或 react所以你需要啟用它.

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"]

進入 .babelrc 以及你現有的 presets.

into .babelrc alongside your existing presets.

或者:

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

并在您的預設中使用 stage-3 來啟用所有 stage-3 實驗功能.

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

這篇關于Browserify，Babel 6，Gulp - 傳播運算符上的意外令牌的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！