Not include FES in minified build

Author: limzykenneth

package-lock.json

@@ -34,6 +34,7 @@
     "omggif": "^1.0.10"
   },
   "devDependencies": {
+    "@rollup/plugin-alias": "^5.1.1",
     "@rollup/plugin-commonjs": "^25.0.7",
     "@rollup/plugin-json": "^6.1.0",
     "@rollup/plugin-node-resolve": "^15.2.3",

package.json

@@ -7,6 +7,7 @@ import pkg from './package.json' assert { type: 'json' };
 import dayjs from 'dayjs';
 import { visualizer } from 'rollup-plugin-visualizer';
 import replace from '@rollup/plugin-replace';
+import alias from '@rollup/plugin-alias';
 
 const plugins = [
   commonjs(),
@@ -99,7 +100,19 @@ export default [
         plugins: [
           bundleSize('p5.esm.js')
         ]
-      },
+      }
+    ],
+    treeshake: {
+      preset: 'smallest'
+    },
+    plugins: [
+      ...plugins
+    ]
+  },
+  //// Minified build ////
+  {
+    input: 'src/app.js',
+    output: [
       {
         file: './lib/p5.min.js',
         format: 'iife',
@@ -125,9 +138,14 @@ export default [
       preset: 'smallest'
     },
     plugins: [
+      alias({
+        entries: [
+          { find: './core/friendly_errors', replacement: './core/noop' }
+        ]
+      }),
       ...plugins
     ]
-  },
+  }
   // NOTE: comment to NOT build standalone math module
   // ...generateModuleBuild()
 ];

rollup.config.mjs

@@ -42,6 +42,10 @@ class p5 {
     remove: []
   };
 
+  // FES stub
+  static _checkForUserDefinedFunctions = () => {};
+  static _friendlyFileLoadError = () => {};
+
   constructor(sketch, node) {
     //////////////////////////////////////////////
     // PRIVATE p5 PROPERTIES AND METHODS

src/core/main.js

@@ -0,0 +1 @@
+export default function(){}