From d49e16650689dabfb85ef3a76cabb2854ac7efa5 Mon Sep 17 00:00:00 2001
From: Tim Schaub <tim.schaub@gmail.com>
Date: Thu, 16 May 2019 10:35:18 -0600
Subject: [PATCH 1/2] Minify worker source

---
 tasks/serialize-workers.js | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/tasks/serialize-workers.js b/tasks/serialize-workers.js
index dbf7e12c1c..0e2b14182f 100644
--- a/tasks/serialize-workers.js
+++ b/tasks/serialize-workers.js
@@ -29,26 +29,27 @@ async function build(input, {minify = true} = {}) {
           }
         ]
       ]
-    }),
-    {
-      name: 'serialize worker and export create function',
-      renderChunk(code) {
-        return `
-          const source = ${JSON.stringify(code)};
-          const blob = new Blob([source], {type: 'application/javascript'});
-          const url = URL.createObjectURL(blob);
-          export function create() {
-            return new Worker(url);
-          }
-        `;
-      }
-    }
+    })
   ];
 
   if (minify) {
     plugins.push(terser());
   }
 
+  plugins.push({
+    name: 'serialize worker and export create function',
+    renderChunk(code) {
+      return `
+        const source = ${JSON.stringify(code)};
+        const blob = new Blob([source], {type: 'application/javascript'});
+        const url = URL.createObjectURL(blob);
+        export function create() {
+          return new Worker(url);
+        }
+      `;
+    }
+  });
+
   const bundle = await rollup.rollup({input, plugins});
   const {output} = await bundle.generate({format: 'es'});
 

From 0d489f2ea9ed962b848fc3263dd50ddd19b40fad Mon Sep 17 00:00:00 2001
From: Tim Schaub <tim.schaub@gmail.com>
Date: Thu, 16 May 2019 10:36:23 -0600
Subject: [PATCH 2/2] Minify worker in examples for a production build

---
 examples/webpack/worker-loader.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/examples/webpack/worker-loader.js b/examples/webpack/worker-loader.js
index b8d10eae09..cbb7b38bf7 100644
--- a/examples/webpack/worker-loader.js
+++ b/examples/webpack/worker-loader.js
@@ -3,7 +3,15 @@ const build = require('../../tasks/serialize-workers').build;
 function loader() {
   const callback = this.async();
 
-  build(this.resource, {minify: false})
+  let minify = false;
+
+  // TODO: remove when https://github.com/webpack/webpack/issues/6496 is addressed
+  const compilation = this._compilation;
+  if (compilation) {
+    minify = compilation.compiler.options.mode === 'production';
+  }
+
+  build(this.resource, {minify})
     .then(chunk => {
       for (const filePath in chunk.modules) {
         this.addDependency(filePath);