错误:无法解析模块"babel-loader" [英] Error: Cannot resolve module 'babel-loader'

问题描述

当我推送到heroku时，我试图在我的package.json中的后安装脚本上运行webpack，但出现以下错误.

I'm trying to run webpack on my postinstall script in my package.json when I push to heroku but I am getting the following error.

ERROR in Entry module not found: Error: Cannot resolve module 'babel-loader' in /tmp/build_6cb4b10367d9382367ab72f2e2f33118

当我在本地运行命令时，没有任何问题.以下是我的webpack配置-我曾尝试使用resolveLoader来解决解决问题，但无济于事?

When I run the command locally I get no issues. Below is my webpack config - i have tried using resolveLoader to fix the resolving issue but to no avail?

var path = require('path');
var webpack = require('webpack');

var config = {
  entry: path.resolve(__dirname, './app/main.js'),
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js'
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'babel-loader'
      },
      {
        test: /\.less$/,
        loader: 'style!css!less'
      }]
  },
  resolve: {
    extensions: ['', '.js', '.jsx', '.less'],
    modulesDirectories: [
      'node_modules'
    ]
  },
  resolveLoader: {
    root: path.resolve(__dirname, 'node_modules')
  },
  plugins: [
    new webpack.optimize.UglifyJsPlugin({minimize: true})
  ]
};

module.exports = config;

有什么建议吗?谢谢

推荐答案

我发现了原因.我的package.json中没有babel或babel-core.添加它们可修复错误.

I found out why. I didn't have babel or babel-core in my package.json. Add them fixed the error.

  "devDependencies": {
    "babel": "^5.8.23",
    "babel-core": "^5.0.0",
    "babel-loader": "^5.3.2"
}

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