check deps before launching

bin/embark

@@ -4,11 +4,30 @@ try {
   eval('let __nodeTest = 123;');
 } catch(e) {
   if (e.name === 'SyntaxError') {
-    console.error("unsupported version of NodeJS. Make sure you are running nodejs 6.9.5 or above");
+    console.error("unsupported version of NodeJS. Make sure you are running nodejs 8.11.3 or above");
+
     process.exit();
   }
 }
 
+function launchEmbark() {
   var Cmd = require('../cmd/cmd');
   var cli = new Cmd();
   cli.process(process.argv);
+}
+
+const path = require('path');
+require('colors');
+try {
+  const dappPackage = require(path.join(process.cwd(), 'package.json'));
+  require('check-dependencies')(dappPackage, (state) => {
+    if (state.status) {
+      console.error('\nMissing dependencies. Please run npm install'.red);
+      process.exit();
+    }
+    launchEmbark();
+  });
+} catch (e) {
+  launchEmbark();
+}
+

cmd/cmd.js

@@ -26,9 +26,9 @@ if (!process.env.EMBARK_PATH) {
 // as an ejected webpack.config.js), making embark's dependencies trasitive
 // dependencies of a dapp without the dapp explicitly specifying embark as a
 // dependency in the dapp's package.json
-process.env.NODE_PATH = utils.joinPath(process.env.EMBARK_PATH, 'node_modules')
-  + (process.env.NODE_PATH ? require('path').delimiter : '')
-  + (process.env.NODE_PATH || '');
+process.env.NODE_PATH = utils.joinPath(process.env.EMBARK_PATH, 'node_modules') +
+  (process.env.NODE_PATH ? require('path').delimiter : '') +
+  (process.env.NODE_PATH || '');
 
 class Cmd {
   constructor() {
@@ -98,13 +98,12 @@ class Cmd {
               }
             }
           });
-        } else {
+        }
         if (options.simple) {
           embark.generateTemplate('simple', './', name);
         } else {
           embark.generateTemplate('boilerplate', './', name, options.template);
         }
-        }
       });
   }