title: Running webpack in VSTS / TFS, cannot find webpack
body: <p>In my build process in VSTS I run 
  <code>npm install -g webpack</code> then <code>npm install webpack</code> both with working dir set to website project dir ( the dir where project.json and other main files are located as opposed to solution dir).</p>
  
  <p>Then I run <code>where webpack</code> in command line task </p>
  
  <p>or <code>Get-Command -CommandType Application -ErrorAction SilentlyContinue -Name webpack | Select-Object -ExpandProperty Definition | echo</code> in powershell task </p>
  
  <p>and they both only return empty string.</p>
  
  <p>So obviously runnig <code>webpack -p</code> as the as the next command only returns 'not found' type of response. </p>
  
  <p><code>The term 'webpack' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.</code></p>
  
  <p>Here are the npm listings for the global:</p>
  
  <pre><code>2016-11-04T15:11:38.0395583Z ##[section]Starting: npm install
  2016-11-04T15:11:38.6826226Z [command]C:\Program Files\nodejs\npm.cmd install -g webpack
  2016-11-04T15:11:48.7566299Z C:\Users\SrvBuildAgentUser\AppData\Roaming\npm\webpack -&gt; C:\Users\SrvBuildAgentUser\AppData\Roaming\npm\node_modules\webpack\bin\webpack.js
  2016-11-04T15:11:48.8726415Z C:\Users\SrvBuildAgentUser\AppData\Roaming\npm
  2016-11-04T15:11:48.8726415Z `-- webpack@1.13.3 
  2016-11-04T15:11:48.8726415Z 
  2016-11-04T15:11:48.8736416Z npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules\webpack\node_modules\chokidar\node_modules\fsevents):
  2016-11-04T15:11:48.8976440Z npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.0.15: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
  2016-11-04T15:11:48.9066449Z ##[section]Finishing: npm install
  </code></pre>
  
  <p>and for the one without global:</p>
  
  <pre><code>2016-11-04T15:11:48.9086451Z ##[section]Starting: npm install
  2016-11-04T15:11:49.5467089Z [command]C:\Program Files\nodejs\npm.cmd install webpack
  2016-11-04T15:11:56.8194361Z asp.net@1.0.0 C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite
  2016-11-04T15:11:56.8204362Z +-- UNMET DEPENDENCY rxjs@5.0.0-beta.12
  2016-11-04T15:11:56.8204362Z `-- webpack@1.13.3 
  2016-11-04T15:11:56.8204362Z 
  2016-11-04T15:11:56.8214363Z npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules\chokidar\node_modules\fsevents):
  2016-11-04T15:11:56.8214363Z npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.0.15: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
  2016-11-04T15:11:56.8224364Z npm WARN asp.net@1.0.0 requires a peer of rxjs@5.0.0-beta.12 but none was installed.
  2016-11-04T15:11:56.8504392Z ##[section]Finishing: npm install
  </code></pre>
  
  <p>and then the <code>webpack -p</code> will just fail with:</p>
  
  <pre><code>2016-11-04T15:11:56.8524394Z ##[section]Starting: PowerShell Script
  2016-11-04T15:11:56.9024444Z ##[command]. 'C:\Users\SrvBuildAgentUser\AppData\Local\Temp\d8093b24-25d4-4c1d-aeab-5f9f41abb954.ps1' 
  2016-11-04T15:11:57.9345476Z C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite
  2016-11-04T15:11:58.4295971Z ##[error]webpack : The term 'webpack' is not recognized as the name of a cmdlet, functio
  n, script file, or operable program. Check the spelling of the name, or if a pa
  th was included, verify that the path is correct and try again.
  At C:\Users\SrvBuildAgentUser\AppData\Local\Temp\d8093b24-25d4-4c1d-aeab-5f9f41
  abb954.ps1:7 char:1
  + webpack -p
  + ~~~~~~~
      + CategoryInfo          : ObjectNotFound: (webpack:String) [], CommandNotF 
     oundException
      + FullyQualifiedErrorId : CommandNotFoundException
  
  
  2016-11-04T15:11:58.4355977Z ##[error]Process completed with exit code 0 and had 1 error(s) written to the error stream.
  2016-11-04T15:11:58.4375979Z ##[section]Finishing: PowerShell Script
  </code></pre>
  
  <p>So I even pushed node_modules/.bin/ to repo and I tried to run <code>node_modules\.bin\webpack</code></p>
  
  <p>and so it found the webpack but it messes up paths and won't find some modules:</p>
  
  <pre><code>2016-11-04T14:47:02.4346130Z ##[section]Starting: Run node_modules\.bin\webpack
  2016-11-04T14:47:02.4366130Z ##[command]node_modules\.bin\webpack -p
  2016-11-04T14:47:04.6596130Z Hash: 6a3774e770e7be6ac786
  2016-11-04T14:47:04.6596130Z Version: webpack 1.13.3
  2016-11-04T14:47:04.6596130Z Time: 925ms
  2016-11-04T14:47:04.6596130Z            Asset       Size  Chunks             Chunk Names
  2016-11-04T14:47:04.6596130Z vendor.bundle.js  734 bytes       0  [emitted]  vendor
  2016-11-04T14:47:04.6596130Z   main.bundle.js    33.4 kB    1, 0  [emitted]  main
  2016-11-04T14:47:04.6596130Z    [0] ./app/main.js 500 bytes {1} [built] [2 errors]
  2016-11-04T14:47:04.6596130Z    [1] ./app/Helpers.js 1.62 kB {1} [built]
  2016-11-04T14:47:04.6596130Z    [2] ./app/ProductAccessibilityValidator.js 2.06 kB {1} [built] [2 errors]
  2016-11-04T14:47:04.6606130Z    [3] ./app/UserProfileProvider.js 1.74 kB {1} [built] [3 errors]
  2016-11-04T14:47:04.6606130Z   [10] ./app/app.routing.js 1.93 kB {1} [built] [1 error]
  2016-11-04T14:47:04.6606130Z   [11] ./app/component.js 1.22 kB {1} [built] [1 error]
  2016-11-04T14:47:04.6606130Z   [20] ./app/module.js 4.09 kB {1} [built] [4 errors]
  2016-11-04T14:47:04.6606130Z     + 14 hidden modules
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z WARNING in main.bundle.js from UglifyJs
  2016-11-04T14:47:04.6606130Z Side effects in initialization of unused variable SearchResult [./app/components/search-page.component.js:20,0]
  2016-11-04T14:47:04.6606130Z Side effects in initialization of unused variable SearchResult [./app/components/product-search.component.js:20,0]
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/main.js
  2016-11-04T14:47:04.6606130Z Module not found: Error: Cannot resolve module '@angular/platform-browser-dynamic' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6606130Z  @ ./app/main.js 2:33-77
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/main.js
  2016-11-04T14:47:04.6606130Z Module not found: Error: Cannot resolve module '@angular/core' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6606130Z  @ ./app/main.js 3:13-37
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/module.js
  2016-11-04T14:47:04.6606130Z Module not found: Error: Cannot resolve module '@angular/core' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6606130Z  @ ./app/module.js 11:13-37
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/module.js
  2016-11-04T14:47:04.6606130Z Module not found: Error: Cannot resolve module '@angular/platform-browser' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6606130Z  @ ./app/module.js 12:25-61
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/module.js
  2016-11-04T14:47:04.6606130Z Module not found: Error: Cannot resolve module '@angular/forms' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6606130Z  @ ./app/module.js 13:14-39
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/module.js
  2016-11-04T14:47:04.6606130Z Module not found: Error: Cannot resolve module '@angular/http' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6606130Z  @ ./app/module.js 14:13-37
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/app.routing.js
  2016-11-04T14:47:04.6606130Z Module not found: Error: Cannot resolve module '@angular/router' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6606130Z  @ ./app/app.routing.js 2:15-41
  2016-11-04T14:47:04.6606130Z 
  2016-11-04T14:47:04.6606130Z ERROR in ./app/component.js
  2016-11-04T14:47:04.6616130Z Module not found: Error: Cannot resolve module '@angular/core' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6616130Z  @ ./app/component.js 11:13-37
  2016-11-04T14:47:04.6616130Z 
  2016-11-04T14:47:04.6616130Z ERROR in ./app/UserProfileProvider.js
  2016-11-04T14:47:04.6616130Z Module not found: Error: Cannot resolve module '@angular/core' in C:\agent_work\10\s\mySolution.Web## Heading ##Site\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6616130Z  @ ./app/UserProfileProvider.js 14:13-37
  2016-11-04T14:47:04.6616130Z 
  2016-11-04T14:47:04.6616130Z ERROR in ./app/UserProfileProvider.js
  2016-11-04T14:47:04.6616130Z Module not found: Error: Cannot resolve module '@angular/http' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app
  2016-11-04T14:47:04.6616130Z  @ ./app/UserProfileProvider.js 15:13-37
  2016-11-04T14:47:04.6616130Z 
  2016-11-04T14:47:04.6616130Z ERROR in ./app/components/product-search.component.js
  2016-11-04T14:47:04.6616130Z Module not found: Error: Cannot resolve module '@angular/core' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app\components
  2016-11-04T14:47:04.6616130Z  @ ./app/components/product-search.component.js 14:13-37 15:13-37
  2016-11-04T14:47:04.6616130Z 
  2016-11-04T14:47:04.6616130Z ERROR in ./app/components/product-search.component.js
  2016-11-04T14:47:04.6616130Z Module not found: Error: Cannot resolve module '@angular/http' in C:\agent_work\10\s\mySolution.WebSite\src\mySolution.WebSite\wwwroot\app\components
  2016-11-04T14:47:04.6616130Z  @ ./app/components/product-search.component.js 16:13-37
  (and so on)
  </code></pre>
  
  <p>Can you help me fix this?</p>
  
  <p><a href="https://i.stack.imgur.com/UjQAn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UjQAn.png" alt="principle sketch"></a></p>