Merge pull request #30 from Polymer/dep-check-testing

add basic testing to check dependencies

.travis.yml

@@ -3,8 +3,8 @@ node_js:
   - "5"
 sudo: false
 before_script:
-  - npm install -g typescript typings
   - npm install
   - npm run init
-script:
   - npm run build
+script:
+  - npm run test

package.json

@@ -6,7 +6,8 @@
   "bin": "bin/polytool.js",
   "scripts": {
     "init": "typings install",
-    "build": "if [ ! -f typings/main.d.ts ]; then npm run init; fi; tsc"
+    "build": "if [ ! -f typings/main.d.ts ]; then npm run init; fi; tsc",
+    "test": "depcheck ."
   },
   "repository": {
     "type": "git",
@@ -33,6 +34,7 @@
     "yeoman-environment": "^1.5.2"
   },
   "devDependencies": {
+    "depcheck": "^0.6.3",
     "typescript": "^1.8.10",
     "typings": "^0.8.1"
   }

src/commands/init.ts

@@ -12,6 +12,7 @@ import {Command} from './command';
 
 // not ES modules compatible
 const YeomanEnvironment = require('yeoman-environment');
+const polymerGenerator = require('generator-polymer-init');
 
 export class InitCommand implements Command {
   name = 'init';
@@ -23,7 +24,7 @@ export class InitCommand implements Command {
   run(options): Promise<any> {
     return new Promise((resolve, reject) => {
       let env = new YeomanEnvironment();
-      env.register(require.resolve('generator-polymer-init'), 'polymer-init:app');
+      env.registerStub(polymerGenerator, 'polymer-init:app');
       env.run('polymer-init', {}, () => resolve());
     });
   }