fix: Remove PURE comments from output bundle

Author: CGNonofr

package-lock.json

@@ -64,6 +64,7 @@
     "eslint-plugin-unused-imports": "^2.0.0",
     "jest": "^28.1.2",
     "jest-environment-jsdom": "^28.1.2",
+    "js-cleanup": "^1.2.0",
     "monaco-languageclient": "^2.0.2",
     "proxy-polyfill": "^0.3.2",
     "rollup": "2.76.0",

package.json

@@ -4,6 +4,7 @@ import alias from '@rollup/plugin-alias'
 import { nodeResolve } from '@rollup/plugin-node-resolve'
 import eslint from '@rollup/plugin-eslint'
 import { babel } from '@rollup/plugin-babel'
+import cleanup from 'js-cleanup'
 import * as rollup from 'rollup'
 import * as recast from 'recast'
 import nodePolyfills from 'rollup-plugin-polyfill-node'
@@ -174,6 +175,16 @@ export default rollup.defineConfig({
         }
         return undefined
       }
+    }, {
+      name: 'cleanup',
+      renderChunk (code) {
+        // Remove comments, and #__PURE__ comments in enum IIFE in particular because webpack will treeshake them out
+        // While rollup doesn't if the parameter is used
+        return cleanup(code, null, {
+          comments: 'none',
+          sourcemap: false
+        }).code
+      }
     }
   ]
 })