Add lib-compiler

Author: leeyi45

lib/lib-compiler/index.ts

@@ -0,0 +1,32 @@
+import { Command } from '@commander-js/extra-typings';
+import chalk from 'chalk';
+import { build, context, type BuildOptions } from 'esbuild';
+
+/**
+ * Returns a {@link Command} that executes with the provided ESBuild options.
+ */
+export default function getBuildCommand(esbuildOptions: Omit<BuildOptions, 'minify'>) {
+  return new Command()
+    .option('--dev', 'If specified, the built output is not minified for easier debugging')
+    .option('--watch', 'Run esbuild in watch mode')
+    .action(async ({ dev, watch }) => {
+      if (watch) {
+        const buildContext = await context({
+          ...esbuildOptions,
+          minify: !dev,
+          plugins: [{
+            name: 'Watch Plugin',
+            setup({ onEnd }) {
+              onEnd(() => {
+                console.log(chalk.greenBright('Build completed.'));
+              });
+            }
+          }]
+        });
+        console.log(chalk.yellowBright('Running ESBuild in watch mode.'));
+        await buildContext.watch();
+      } else {
+        await build(esbuildOptions);
+      }
+    });
+}

lib/lib-compiler/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "@sourceacademy/lib-compiler",
+  "private": true,
+  "version": "1.0.0",
+  "type": "module",
+  "description": "Wrapper around esbuild and commander to make it simpler to bundle library packages",
+  "devDependencies": {
+    "@commander-js/extra-typings": "^13.0.0",
+    "typescript": "^5.8.2"
+  },
+  "dependencies": {
+    "chalk": "^5.0.1",
+    "commander": "^13.0.0",
+    "esbuild": "^0.25.5"
+  },
+  "exports": {
+    ".": {
+      "types": "./index.ts",
+      "default": "./dist/index.js"
+    }
+  },
+  "scripts": {
+    "build": "yarn tsc"
+  }
+}

lib/lib-compiler/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "include": ["./index.ts"],
+  "compilerOptions": {
+    "module": "nodenext",
+    "moduleResolution": "nodenext",
+    "outDir": "./dist"
+  }
+}