Remove debug code from transpiled sources.

.babelrc

@@ -3,6 +3,16 @@
     "presets": ["es2015"],
     "plugins": [
         "transform-runtime",
-        [ "babel-plugin-webpack-loaders", { "config": "./webpack-babel.config.js", "verbose": false }]
+        [ "babel-plugin-webpack-loaders", { "config": "./webpack-babel.config.js", "verbose": false }],
+        ["minify-replace", {
+            "replacements": [{
+                "identifierName": "__DEBUG__",
+                "replacement": {
+                    "type": "booleanLiteral",
+                    "value": false
+                }
+            }]
+        }],
+        ["minify-dead-code-elimination"]
     ]
 }

package.json

@@ -49,6 +49,8 @@
     "babel-cli": "^6.22.2",
     "babel-core": "^6.22.1",
     "babel-loader": "^7.0.0",
+    "babel-plugin-minify-dead-code-elimination": "^0.2.0",
+    "babel-plugin-minify-replace": "^0.2.0",
     "babel-plugin-transform-runtime": "^6.22.0",
     "babel-plugin-webpack-loaders": "^0.9.0",
     "babel-preset-es2015": "^6.22.2",

webpack-babel.config.js

@@ -1,27 +1,16 @@
 var path = require('path');
 
+var commonConfig = require('./webpack-common.config.js');
+
 module.exports = {
     output: {
         libraryTarget: 'commonjs2',
         umdNamedDefine: true,
     },
     module: {
         rules: [
-            // please consider modifying corresponding loaders in webpack.config.js too
-            {
-                test: /\.glsl$/,
-                include: [
-                    path.resolve(__dirname, 'src'),
-                ],
-                loader: 'raw-loader',
-            },
-            {
-                test: /\.json$/,
-                include: [
-                    path.resolve(__dirname, 'utils'),
-                ],
-                loader: 'raw-loader',
-            },
+            commonConfig.glslLoader,
+            commonConfig.jsonLoader,
         ],
     },
 };

webpack-common.config.js

@@ -0,0 +1,21 @@
+var path = require('path');
+
+module.exports = {
+    glslLoader: {
+        // please consider modifying corresponding loaders in webpack-babel.config.js too
+        test: /\.glsl$/,
+        include: [
+            path.resolve(__dirname, 'src'),
+            path.resolve(__dirname, 'test'),
+        ],
+        loader: 'raw-loader',
+    },
+    jsonLoader: {
+        // please consider modifying corresponding loaders in webpack-babel.config.js too
+        test: /\.json$/,
+        include: [
+            path.resolve(__dirname, 'utils'),
+        ],
+        loader: 'raw-loader',
+    },
+};

webpack.config.js

@@ -1,6 +1,8 @@
 var path = require('path');
 var webpack = require('webpack');
 
+var commonConfig = require('./webpack-common.config.js');
+
 var definePlugin = new webpack.DefinePlugin({
     __DEBUG__: JSON.stringify(process.env.NODE_ENV === 'development'),
 });
@@ -57,23 +59,8 @@ module.exports = {
                     babelrc: false,
                 },
             },
-            {
-                // please consider modifying corresponding loaders in webpack-babel.config.js too
-                test: /\.glsl$/,
-                include: [
-                    path.resolve(__dirname, 'src'),
-                    path.resolve(__dirname, 'test'),
-                ],
-                loader: 'raw-loader',
-            },
-            {
-                // please consider modifying corresponding loaders in webpack-babel.config.js too
-                test: /\.json$/,
-                include: [
-                    path.resolve(__dirname, 'utils'),
-                ],
-                loader: 'raw-loader',
-            },
+            commonConfig.glslLoader,
+            commonConfig.jsonLoader,
         ],
     },
     devServer: {