fix(core): Fix Public API failing to build on Windows (#3499)

* ✨ Add build script

* 📦 Add dependencies

* 📦 Update package-lock.json

* 👕 Ignore `build.mjs`

.eslintignore

@@ -1,2 +1,3 @@
 packages/editor-ui
 packages/design-system
+packages/cli/scripts/build.mjs

packages/cli/package.json

@@ -19,9 +19,7 @@
     "bin": "n8n"
   },
   "scripts": {
-    "build": "run-script-os",
-    "build:default": "tsc && cp -r ./src/UserManagement/email/templates ./dist/src/UserManagement/email && cp ./src/PublicApi/swaggerTheme.css ./dist/src/PublicApi/swaggerTheme.css; find ./src/PublicApi -iname 'openapi.yml' -exec swagger-cli bundle {} --type yaml --outfile \"./dist\"/{} \\;",
-    "build:windows": "tsc && xcopy /E /I src\\UserManagement\\email\\templates dist\\src\\UserManagement\\email\\templates",
+    "build": "node scripts/build.mjs",
     "dev": "concurrently -k -n \"TypeScript,Node\" -c \"yellow.bold,cyan.bold\" \"npm run watch\" \"nodemon\"",
     "format": "cd ../.. && node_modules/prettier/bin-prettier.js packages/cli/**/**.ts --write",
     "lint": "cd ../.. && node_modules/eslint/bin/eslint.js packages/cli",
@@ -100,6 +98,7 @@
     "@rudderstack/rudder-sdk-node": "1.0.6",
     "@types/json-diff": "^0.5.1",
     "@types/jsonwebtoken": "^8.5.2",
+    "@types/shelljs": "^0.8.11",
     "@types/swagger-ui-express": "^4.1.3",
     "@types/yamljs": "^0.2.31",
     "basic-auth": "^2.0.1",
@@ -146,6 +145,7 @@
     "pg": "^8.3.0",
     "prom-client": "^13.1.0",
     "request-promise-native": "^1.0.7",
+    "shelljs": "^0.8.5",
     "sqlite3": "^5.0.2",
     "sse-channel": "^3.1.1",
     "swagger-ui-express": "^4.3.0",

packages/cli/scripts/build.mjs

@@ -0,0 +1,59 @@
+import path from 'path';
+import { fileURLToPath } from 'url';
+import shell from 'shelljs';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const ROOT_DIR = path.resolve(__dirname, '..');
+const SPEC_FILENAME = 'openapi.yml';
+const SPEC_THEME_FILENAME = 'swaggerTheme.css';
+
+const userManagementEnabled = process.env.N8N_USER_MANAGEMENT_DISABLED !== 'true';
+const publicApiEnabled = process.env.N8N_PUBLIC_API_DISABLED !== 'true';
+
+shell.rm('-rf', path.resolve(ROOT_DIR, 'dist'));
+
+shell.exec('tsc');
+
+if (userManagementEnabled) {
+	copyUserManagementEmailTemplates();
+}
+
+if (publicApiEnabled) {
+	copySwaggerTheme();
+	bundleOpenApiSpecs();
+}
+
+function copyUserManagementEmailTemplates(rootDir = ROOT_DIR) {
+	const templates = {
+		source: path.resolve(rootDir, 'src', 'UserManagement', 'email', 'templates'),
+		destination: path.resolve(rootDir, 'dist', 'src', 'UserManagement', 'email'),
+	};
+
+	shell.cp('-r', templates.source, templates.destination);
+}
+
+function copySwaggerTheme(rootDir = ROOT_DIR, themeFilename = SPEC_THEME_FILENAME) {
+	const swaggerTheme = {
+		source: path.resolve(rootDir, 'src', 'PublicApi', themeFilename),
+		destination: path.resolve(rootDir, 'dist', 'src', 'PublicApi'),
+	};
+
+	shell.cp('-r', swaggerTheme.source, swaggerTheme.destination);
+}
+
+function bundleOpenApiSpecs(rootDir = ROOT_DIR, specFileName = SPEC_FILENAME) {
+	const publicApiDir = path.resolve(rootDir, 'src', 'PublicApi');
+
+	shell
+		.find(publicApiDir)
+		.reduce((acc, cur) => {
+			return cur.endsWith(specFileName) ? [...acc, path.relative('.', cur)] : acc;
+		}, [])
+		.forEach((specPath) => {
+			const distSpecPath = path.resolve(rootDir, 'dist', specPath);
+			const command = `swagger-cli bundle ${specPath} --type yaml --outfile ${distSpecPath}`;
+			shell.exec(command, { silent: true });
+		});
+}