fix: exclude local node_modules from PATH when launch 'npm install'

Author: ValeryVS

packages/angular-cli/tasks/npm-install.ts

@@ -2,13 +2,33 @@ const Task = require('ember-cli/lib/models/task');
 import * as chalk from 'chalk';
 import {exec} from 'child_process';
 
+const RElocalNodeModulesFolder = /node_modules\/\.bin/;
+function isLocalNodeModulesFolder(name: string) {
+  return RElocalNodeModulesFolder.test(name);
+}
+
+function getPath() {
+  const pathArr = process.env.PATH.split(':');
+  const newPathArr = [];
+  for (let pathItem of pathArr) {
+    if (!isLocalNodeModulesFolder(pathItem)) {
+      newPathArr.push(pathItem);
+    }
+  }
+  return newPathArr.join(':');
+}
 
 export default Task.extend({
   run: function() {
     const ui = this.ui;
 
     return new Promise(function(resolve, reject) {
       ui.writeLine(chalk.green('Installing packages for tooling via npm.'));
+      const options = {
+        env: {
+          PATH: getPath()
+        }
+      }
       exec('npm install',
         (err: NodeJS.ErrnoException, stdout: string, stderr: string) => {
         if (err) {