build: build .langium file using generate from langium-cli

.build/generateLangium.ts

@@ -1,11 +1,5 @@
-import { execFileSync } from 'child_process';
+import { generate } from 'langium-cli';
 
-export function generateLangium() {
-  execFileSync('pnpm', [
-    '--prefix',
-    `${process.cwd()}/packages/parser`,
-    'exec',
-    'langium',
-    'generate',
-  ]);
+export async function generateLangium() {
+  await generate({ file: `./packages/parser/langium-config.json` });
 }

.build/langium-cli.d.ts

@@ -0,0 +1,9 @@
+declare module 'langium-cli' {
+  export interface GenerateOptions {
+    file?: string;
+    mode?: 'development' | 'production';
+    watch?: boolean;
+  }
+
+  export function generate(options: GenerateOptions): Promise<boolean>;
+}

.esbuild/build.ts

@@ -53,7 +53,7 @@ const handler = (e) => {
 };
 
 const main = async () => {
-  generateLangium();
+  await generateLangium();
   await mkdir('stats').catch(() => {});
   const packageNames = Object.keys(packageOptions) as (keyof typeof packageOptions)[];
   // it should build `parser` before `mermaid` because it's a dependecy

.esbuild/server.ts

@@ -79,7 +79,7 @@ function sendEventsToAll() {
 }
 
 async function createServer() {
-  generateLangium();
+  await generateLangium();
   handleFileChange();
   const app = express();
   chokidar
@@ -93,7 +93,7 @@ async function createServer() {
         return;
       }
       if (/\.langium$/.test(path)) {
-        generateLangium();
+        await generateLangium();
       }
       console.log(`${path} changed. Rebuilding...`);
       handleFileChange();

.vite/build.ts

@@ -114,7 +114,7 @@ const main = async () => {
   }
 };
 
-generateLangium();
+await generateLangium();
 
 if (watch) {
   await build(getBuildConfig({ minify: false, watch, core: false, entryName: 'parser' }));

package.json

@@ -107,6 +107,7 @@
     "jison": "^0.4.18",
     "js-yaml": "^4.1.0",
     "jsdom": "^22.0.0",
+    "langium-cli": "2.0.1",
     "lint-staged": "^13.2.1",
     "nyc": "^15.1.0",
     "path-browserify": "^1.0.1",

pnpm-lock.yaml

@@ -149,6 +149,9 @@ importers:
       jsdom:
         specifier: ^22.0.0
         version: 22.0.0
+      langium-cli:
+        specifier: 2.0.1
+        version: 2.0.1
       lint-staged:
         specifier: ^13.2.1
         version: 13.2.1