fix: Fix help text for cli

Author: raymondfeng

packages/cli/lib/project-generator.js

@@ -53,6 +53,14 @@ module.exports = class extends Generator {
     });
   }
 
+  /**
+   * Override the usage text by replacing `yo loopback4:` with `lb4 `.
+   */
+  usage() {
+    const text = super.usage();
+    return text.replace(/^yo loopback4:/g, 'lb4 ');
+  }
+
   setOptions() {
     this.projectInfo = {};
     [

packages/cli/test/project.js

@@ -7,9 +7,22 @@
 const path = require('path');
 const assert = require('yeoman-assert');
 const helpers = require('yeoman-test');
+const yeoman = require('yeoman-environment');
 
 module.exports = function(appGenerator, props) {
   return function() {
+    describe('help', () => {
+      it('prints lb4', () => {
+        const env = yeoman.createEnv();
+        const name = appGenerator.substring(appGenerator.lastIndexOf('/') + 1);
+        env.register(appGenerator, 'loopback4:' + name);
+        const generator = env.create('loopback4:' + name);
+        const helpText = generator.help();
+        assert(helpText.match(/lb4 /));
+        assert(!helpText.match(/loopback4:/));
+      });
+    });
+
     describe('without settings', () => {
       before(() => {
         return helpers.run(appGenerator).withPrompts(props);