playground: most of the logic for both frontend and backend is implemented, some bugs remain

vite.config.ts

@@ -1,12 +1,17 @@
 import {fileURLToPath, URL} from 'node:url'
 
 import {defineConfig} from 'vite'
+// @ts-ignore
 import vue from '@vitejs/plugin-vue'
+// @ts-ignore
 import vueJsx from '@vitejs/plugin-vue-jsx'
 import {name, version} from './package.json'
 import {execSync} from 'child_process'
 import {viteStaticCopy} from "vite-plugin-static-copy";
 import {dirname, join} from "path";
+import {version as pyodideVersion} from "pyodide";
+
+let wantsSmallBuild = process.env.YACV_SMALL_BUILD == "true";
 
 // https://vitejs.dev/config/
 export default defineConfig({
@@ -15,7 +20,7 @@ export default defineConfig({
         vue({
             template: {
                 compilerOptions: {
-                    isCustomElement: tag => tag == 'model-viewer'
+                    isCustomElement: (tag: string) => tag == 'model-viewer'
                 }
             }
         }),
@@ -37,8 +42,17 @@ export default defineConfig({
         rollupOptions: {
             output: {
                 experimentalMinChunkSize: 512000, // 512KB (avoid too many small chunks)
-            }
-        }
+            },
+            external: wantsSmallBuild ? [
+                // Exclude some large optional dependencies if small build is requested (for embedding in python package)
+                "pyodide",
+                /.*\/pyodide-worker.*/,
+                "monaco-editor",
+                /monaco-editor\/.*/,
+                "@guolao/vue-monaco-editor",
+                /three\/examples\/jsm\/libs\/draco\/draco_(en|de)coder\.js/,
+            ] : [],
+        },
     },
     worker: {
         format: 'es', // Use ES modules for workers (IIFE is not supported with code-splitting)
@@ -48,6 +62,7 @@ export default defineConfig({
         __APP_VERSION__: JSON.stringify(version),
         __APP_GIT_SHA__: JSON.stringify(execSync('git rev-parse HEAD').toString().trim()),
         __APP_GIT_DIRTY__: JSON.stringify(execSync('git diff --quiet || echo dirty').toString().trim()),
+        __YACV_SMALL_BUILD__: JSON.stringify(wantsSmallBuild),
     }
 })
 
@@ -59,12 +74,13 @@ function viteStaticCopyPyodide() {
         "!**/*.whl",
         "!**/node_modules",
     ];
+    // @ts-ignore
     const pyodideDir = dirname(fileURLToPath(import.meta.resolve("pyodide")));
     return viteStaticCopy({
-        targets: [
+        targets: wantsSmallBuild ? [] : [
             {
                 src: [join(pyodideDir, "*")].concat(PYODIDE_EXCLUDE),
-                dest: "assets",
+                dest: "pyodide-v" + pyodideVersion, // It would be better to use hashed names instead of folder...
             },
         ],
     });