feat: check node engine requirements

lib/feflow.js

@@ -1,9 +1,11 @@
 'use strict';
 
 const Feflow = require('./core');
+const pkg = require('../package.json');
 const figlet = require('figlet');
 const chalk = require('chalk');
 const minimist = require('minimist');
+const semver = require('semver');
 
 /**
  * Entrance file, parse user input and call a command.
@@ -49,6 +51,13 @@ function entry(args) {
     });
   }
 
+  log.debug('process.version', process.version);
+  log.debug('pkg.engines.node', pkg.engines.node);
+
+  if (!semver.satisfies(process.version, pkg.engines.node)) {
+    return log.error(`运行feflow所需Node.js版本为${pkg.engines.node}，当前版本为${process.version}，请升级到最新版本Node.js(https://nodejs.org/en/).`);
+  }
+
   return feflow.init().then(function() {
     let cmd = '';
 

package.json

@@ -18,6 +18,9 @@
     "commandline",
     "front-end"
   ],
+  "engines": {
+    "node": ">=6.0.0"
+  },
   "author": "cpselvis (cpselvis@gmail.com)",
   "license": "MIT",
   "bin": {
@@ -41,6 +44,7 @@
     "osenv": "^0.1.4",
     "request": "^2.81.0",
     "request-promise": "^4.2.1",
+    "semver": "^5.4.1",
     "yeoman-environment": "^1.6.6"
   },
   "devDependencies": {