added webpack analyze

Author: DanielJDufour

package.json

@@ -8,6 +8,7 @@
   },
   "unpkg": "./dist/georaster.browser.bundle.min.js",
   "scripts": {
+    "analyze": "ANALYZE_GEORASTER_BUNDLE=true npm run build",
     "eslint": "node ./node_modules/eslint/bin/eslint.js src",
     "fix": "node ./node_modules/eslint/bin/eslint.js src --fix",
     "test": "npm run test-dev",
@@ -58,6 +59,7 @@
     "eslint-config-google": "^0.11.0",
     "mocha": "^6.2.0",
     "webpack": "^4.12.0",
+    "webpack-bundle-analyzer": "^3.6.0",
     "webpack-cli": "^3.0.8"
   }
 }

webpack.config.js

@@ -1,10 +1,18 @@
 const path = require('path');
+const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 
 module.exports = (env, argv) => {
   console.log('mode:', argv.mode);
   console.log('target:', argv.target);
   const {mode, target} = argv;
   const targetFileNamePart = target === 'node' ? '' : '.browser';
+
+  const plugins = []
+  if (process.env.ANALYZE_GEORASTER_BUNDLE) {
+    plugins.push(BundleAnalyzerPlugin({
+      analyzerHost: process.env.ANALYZER_HOST || "127.0.0.1"
+    }));
+  }
   return {
     entry: './src/index.js',
     mode,
@@ -49,5 +57,6 @@ module.exports = (env, argv) => {
       // activating geotiff.js' makeFetchSource function when using fromUrl
       'node-fetch': 'node-fetch',
     },
+    plugins
   };
 };