Now a real CLI : cwb

custom-widget-builder/package.json

 {
-  "name": "poc-widget-builder",
+  "name": "custom-widget-builder",
   "version": "0.0.1",
-  "description": "",
-  "author": "poc-widget-builder",
+  "description": "Bonitasoft UI Designer: Custom Widget Builder",
+  "main": "build/src/starter.js",
   "license": "GPLv2",
   "scripts": {
     "typescript-compile": "tsc --build tsconfig.json",
@@ -21,6 +21,10 @@
     "jest": "^26.6.3",
     "ts-jest": "^26.5.4"
   },
+  "bin": {
+    "cwb": "./build/src/starter.js",
+    "custom-widget-builder": "./build/src/starter.js"
+  },
   "jest": {
     "verbose": true,
     "roots": [

custom-widget-builder/src/starter.ts

+#!/usr/bin/env node
+
 /*
  * Copyright © 2021 Bonitasoft S.A.
  * Bonitasoft, 32 rue Gustave Eiffel - 38000 Grenoble
@@ -16,17 +18,16 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-
-
 import {CustomWidgetBuilder} from "./CustomWidgetBuilder";
 
-let wcFile;
-let outputDir;
-
-for (let param of process.argv) {
-  if (param.startsWith("wcFile")) {
-    wcFile = getParameter(param);
-  }
+let params = process.argv.slice(2);
+let wcFile = params[0];
+if (!wcFile) {
+  usage();
+  process.exit(1);
+}
+let outputDir = ".";
+for (let param of params) {
   if (param.startsWith("outputDir")) {
     outputDir = getParameter(param);
   }
@@ -38,3 +39,7 @@ new CustomWidgetBuilder().generatePropertiesFile(wcFile, outputDir);
 function getParameter(param: string): any {
   return param.substr(param.indexOf('=') + 1);
 }
+
+function usage() {
+  console.log("Usage: cwb <web component source file> [outputDir=<directory>]");
+}