From 39352e6e4a07c07da5f60ee3ed7d5b4c2606fc04 Mon Sep 17 00:00:00 2001
From: Roman Hotsiy <gotsijroman@gmail.com>
Date: Mon, 26 Mar 2018 13:55:50 +0300
Subject: [PATCH] chore: ignore some not-used code from node_modules (-9KB)

---
 demo/webpack.config.ts | 11 +++++++++++
 webpack.config.ts      |  7 +++++++
 2 files changed, 18 insertions(+)

diff --git a/demo/webpack.config.ts b/demo/webpack.config.ts
index cb20a3f8..b97b7631 100644
--- a/demo/webpack.config.ts
+++ b/demo/webpack.config.ts
@@ -78,6 +78,11 @@ export default (env: { playground?: boolean; bench?: boolean } = {}, { mode }) =
 
   performance: false,
 
+  externals: {
+    esprima: 'esprima',
+    'node-fetch': 'null',
+  },
+
   module: {
     rules: [
       { enforce: 'pre', test: /\.js$/, loader: 'source-map-loader' },
@@ -123,6 +128,12 @@ export default (env: { playground?: boolean; bench?: boolean } = {}, { mode }) =
       template: env.playground ? 'demo/playground/index.html' : 'demo/index.html',
     }),
     new ForkTsCheckerWebpackPlugin(),
+    ignore(/js-yaml\/dumper\.js$/),
+    ignore(/json-schema-ref-parser\/lib\/dereference\.js/),
     new CopyWebpackPlugin(['demo/openapi.yaml']),
   ],
 });
+
+function ignore(regexp) {
+  return new webpack.NormalModuleReplacementPlugin(regexp, require.resolve('lodash/noop.js'));
+}
diff --git a/webpack.config.ts b/webpack.config.ts
index 1be9bfe4..004478a1 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -55,6 +55,7 @@ export default (env: { standalone?: boolean } = {}, { mode }) => ({
     : (context, request, callback) => {
         // ignore node-fetch dep of swagger2openapi as it is not used
         if (/node-fetch$/i.test(request)) return callback(null, 'var undefined');
+        if (/esprima$/i.test(request)) return callback(null, 'var undefined');
         return nodeExternals(context, request, callback);
       },
 
@@ -124,5 +125,11 @@ export default (env: { standalone?: boolean } = {}, { mode }) => ({
     }),
     new ForkTsCheckerWebpackPlugin({ silent: true }),
     new webpack.BannerPlugin(BANNER),
+    ignore(/js-yaml\/dumper\.js$/),
+    ignore(/json-schema-ref-parser\/lib\/dereference\.js/),
   ],
 });
+
+function ignore(regexp) {
+  return new webpack.NormalModuleReplacementPlugin(regexp, require.resolve('lodash/noop.js'));
+}