feat: simple webpack config

lib/webpack/config/base.js

@@ -0,0 +1,48 @@
+const Config = require('webpack-chain');
+const path = require('path');
+
+module.exports = function createBaseConfig(props) {
+  const {outDir, themePath, siteDir, baseUrl} = props;
+
+  const config = new Config();
+  const isProd = process.env.NODE_ENV === 'production';
+
+  config
+    .mode(isProd ? 'production' : 'development')
+    .output.path(outDir)
+    .filename(
+      isProd ? 'static/js/[name].[chunkhash].js' : 'static/js/[name].js'
+    )
+    .publicPath(isProd ? baseUrl : '/');
+
+  config.resolve
+    .set('symlinks', true)
+    .alias.set('@theme', themePath)
+    .set('@site', siteDir)
+    .set('@generated', path.resolve(__dirname, '../core/generated'))
+    .set('@core', path.resolve(__dirname, '../core'))
+    .end();
+
+  const libDir = path.join(__dirname, '..');
+  config.module
+    .rule('js')
+    .test(/\.js$/)
+    .exclude.add(filepath => {
+      // Always transpile lib directory
+      if (filepath.startsWith(libDir)) {
+        return false;
+      }
+      // Don't transpile node_modules
+      return /node_modules/.test(filepath);
+    })
+    .end()
+    .use('babel')
+    .loader('babel-loader')
+    .options({
+      // do not pick local project babel config
+      babelrc: false,
+      presets: ['env', 'react']
+    });
+
+  return config;
+};

lib/webpack/config/dev.js

@@ -0,0 +1,10 @@
+const path = require('path');
+const createBaseConfig = require('./base');
+
+module.exports = function createDevConfig(props) {
+  const config = createBaseConfig(props);
+
+  config.entry('main').add(path.resolve(__dirname, '../core/devEntry.js'));
+
+  return config;
+};

lib/webpack/config/prod.js

@@ -0,0 +1,12 @@
+const path = require('path');
+const createBaseConfig = require('./base');
+
+module.exports = function createProdConfig(props) {
+  const config = createBaseConfig(props);
+
+  config.entry('main').add(path.resolve(__dirname, '../core/prodEntry.js'));
+
+  // TODO
+
+  return config;
+};