improve esbuild. allow for (some) modules

src2/webpack/esbuild.config.mjs

@@ -0,0 +1,82 @@
+import { build, transform } from 'esbuild';
+import fs from 'fs/promises';
+import glob from 'fast-glob';
+
+// Get build mode from command line argument
+const mode = process.argv[2] || 'dev';
+const isProd = mode === 'prod';
+
+console.log(`Building in ${mode} mode...`);
+
+const MESH_OUTFILE = 'src2/pack/mesh.js';
+const MESH_EXTRAS = [
+    'mod/*/mesh.js',
+    'mod/*/tra1.js'
+];
+
+async function appendExtraModules(extras, minify = false) {
+    const files = await glob(extras);
+    if (files.length === 0) return;
+
+    const transformed = await Promise.all(
+        files.map(async (file) => {
+            const code = await fs.readFile(file, 'utf8');
+            if (!minify) return code;
+
+            const result = await transform(code, {
+                minify: true,
+                loader: 'js',
+                target: 'es2020',
+            });
+            return result.code;
+        })
+    );
+
+    await fs.appendFile(MESH_OUTFILE, transformed.join(''));
+    console.log(`Appended ${files.length} module(s) to ${MESH_OUTFILE}`);
+}
+
+async function buildApp() {
+    try {
+        // Bundle main app
+        await build({
+            entryPoints: [ 'src2/main/mesh.js' ],
+            bundle: true,
+            outfile: MESH_OUTFILE,
+            format: 'esm',
+            external: ['module'],
+            sourcemap: !isProd,  // true for dev, false for prod
+            minify: isProd,      // false for dev, true for prod
+            target: 'es2020',
+            platform: 'browser',
+            define: {
+                'process.env.NODE_ENV': `"${mode}"`
+            }
+        });
+
+        appendExtraModules(MESH_EXTRAS, isProd);
+
+        // Bundle worker
+        await build({
+            entryPoints: [ 'src2/mesh/work.js' ],
+            bundle: true,
+            outfile: 'src2/pack/work.js',
+            format: 'esm',
+            external: ['module'],
+            sourcemap: !isProd,  // true for dev, false for prod
+            minify: isProd,      // false for dev, true for prod
+            target: 'es2020',
+            platform: 'browser',
+            define: {
+                'process.env.NODE_ENV': `"${mode}"`
+            }
+        });
+
+        console.log(`Build completed successfully in ${mode} mode!`);
+    } catch (error) {
+        console.error('Build failed:', error);
+        process.exit(1);
+    }
+}
+
+buildApp();