Cannot find module 'chalk'

[rustan-id]

$ yarn start
yarn start v0.21.3
$ webpack --config vendor/webpack.config.js
module.js:471
throw err;
^

Error: Cannot find module 'chalk'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object. (/home/gmaimunah/Documents/Ultimate Angular/Angular 2 Fundamental/angular2master/vendor/webpack.config.js:5:13)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
error Command failed with exit code 1.

[rustan-id]

$ sudo npm install chalk
└─┬ [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
└── [email protected]

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

$ yarn start
yarn start v0.21.3
$ webpack --config vendor/webpack.config.js
module.js:471
throw err;
^

Error: Cannot find module 'progress-bar-webpack-plugin'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object. (/home/gmaimunah/Documents/Ultimate Angular/Angular 2 Fundamental/angular2master/vendor/webpack.config.js:6:25)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
error Command failed with exit code 1.

]$ sudo npm install progress-bar-webpack-plugin
[email protected] /home/gmaimunah/Documents/Ultimate Angular/Angular 2 Fundamental/angular2master
└─┬ [email protected]
├─┬ [email protected]
│ ├─┬ [email protected]
│ │ └── [email protected]
│ ├── [email protected]
│ └── [email protected]
└── [email protected]

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
[gmaimunah@ghina-id angular2master]$ yarn start
yarn start v0.21.3
$ webpack --config vendor/webpack.config.js
build [====================] 100% 0.2 seconds

Build completed in 0.169s

[0] dll vendor 12 bytes {0} [built]
error Command failed with exit code 2.

[rustan-id]

it's done when i tried in vs code toggle terminal.. Thanks...