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@metheglin

webpack v3でriotJSのビルド設定

webpack v1 => v2 => v3の流れでwebpack.config.jsの仕様がころころ変わってる模様。ここが変わるのは苦しいがさすがにそろそろ安定してくるはず。

DEV_PACKAGES="webpack@3.0.0 path riotjs-loader babel babel-core babel-loader babel-preset-es2015 babel-preset-es2015-riot"
yarn add --dev ${DEV_PACKAGES}
  # npm install --save-dev ${DEV_PACKAGES}

yarn add riot
  # npm install --save riot

webpack.config.js

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

module.exports = {
  entry: './node_assets/javascripts/main.js',
  output: {
    path: path.resolve(__dirname, 'app/assets/javascripts'),
    filename: 'app.bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.tag$/,
        exclude: /node_modules/,
        loader: "riotjs-loader",
        enforce: "pre",
      },
      {
        test: /\.js[x]?$|\.tag$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          presets: ['es2015-riot']
        },
      }
    ],
  },
  plugins: [
    new webpack.ProvidePlugin({
      riot: 'riot'
    })
  ]
}

  • プラットフォーム差の問題でoutputパスを絶対パスで指定するようになったぽい
  • preLoaders,loaders設定は廃止されていて、rules設定に統一されている
  • riotTagをjavascript変換して、さらにそれをes2015に変換するためには、riotjs-loaderpreで動かす(enforce:"pre"を指定)
  • es2015にしないと、webpack --optimize-minimizeがエラーになった
webpack
  # 以下の警告は出るが、コンパイルはできた
  # loaderUtils.parseQuery() received a non-string value which can be problematic, see https://github.com/webpack/loader-utils/issues/56
  # parseQuery() will be replaced with getOptions() in the next major version of loader-utils.

webpack --optimize-minimize
  # ls -l /path/to/compiled.js
  # 圧縮を確認

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Help us understand the problem. What are the problem?