devDeps: webpack@3->4

dist/ethjs-util.min.js.LICENSE.txt

@@ -0,0 +1,8 @@
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <http://feross.org>
+ * @license  MIT
+ */
+
+/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */

internals/webpack/webpack.config.js

@@ -1,58 +1,57 @@
 const path = require('path');
 const webpack = require('webpack');
+const TerserPlugin = require('terser-webpack-plugin');
 
-var env = process.env.NODE_ENV;   // eslint-disable-line
-var filename = 'ethjs-util';      // eslint-disable-line
-var library = 'ethUtil';          // eslint-disable-line
-var config = {                    // eslint-disable-line
+// TODO: temporary workaround for making webpack 4 work across Node.js versions
+// Remove once project upgraded to webpack 5
+// https://stackoverflow.com/questions/69394632/webpack-build-failing-with-err-ossl-evp-unsupported/69691525#69691525
+const crypto = require('crypto');
+
+const cryptoOrigCreateHash = crypto.createHash;
+crypto.createHash = (algorithm) => cryptoOrigCreateHash(algorithm === 'md4' ? 'sha256' : algorithm);
+
+const env = process.env.NODE_ENV;
+const filename = 'ethjs-util';
+const library = 'ethUtil';
+const config = {
   module: {
-    loaders: [
-      {
-        test: /\.js$/,
-        loaders: ['babel-loader'],
-        exclude: /node_modules/,
-      },
-      {
-        test: /\.json$/,
-        loader: ['json-loader'],
-      },
-    ],
   },
-  devtool: 'cheap-module-source-map',
+  devtool: env === 'production'
+    ? false
+    : 'cheap-module-source-map',
+  optimization: env === 'production'
+    ? {
+      minimize: true,
+      minimizer: [new TerserPlugin({
+        sourceMap: false,
+        terserOptions: {
+          ecma: 6,
+          compress: {
+            pure_getters: true,
+            unsafe: true,
+            unsafe_comps: true,
+          },
+          ie8: false,
+          mangle: false,
+        },
+      })],
+    } : {},
   output: {
     path: path.resolve(path.join(__dirname, '../../dist')),
-    filename: filename + '.js',       // eslint-disable-line
-    library: library,                 // eslint-disable-line
+    filename: env === 'production'
+      ? filename + '.min.js'    // eslint-disable-line
+      : filename + '.js',       // eslint-disable-line
+    library,
     libraryTarget: 'umd',
     umdNamedDefine: true,
   },
   plugins: [
-    new webpack.BannerPlugin({ banner: ' /* eslint-disable */ ', raw: true, entryOnly: true }),
+    new webpack.BannerPlugin({ banner: '/* eslint-disable */', raw: true, entryOnly: true }),
     new webpack.optimize.OccurrenceOrderPlugin(),
     new webpack.DefinePlugin({
       'process.env.NODE_ENV': JSON.stringify(env),
     }),
   ],
 };
 
-if (env === 'production') {
-  config.output.filename = filename + '.min.js'; // eslint-disable-line
-  config.plugins
-    .push(new webpack.optimize.UglifyJsPlugin({
-      compressor: {
-        pure_getters: true,
-        unsafe: true,
-        unsafe_comps: true,
-        warnings: false,
-        screw_ie8: false,
-      },
-      mangle: {
-        screw_ie8: false,
-      },
-      output: {
-        screw_ie8: false,
-      },
-    }));
-}
-
 module.exports = config;