title: Error with npm install - a pre-gyp error
body: <p>I wanted to install <a href="https://github.com/mattlewis92/angular2-calendar#installation" rel="noreferrer">this</a> angular 2 calendar using npm. Tried to use npm to install it and then downloaded it and tried to install it. In both cases its failed.</p>
  
  <p>I am on windows and I previously got this error trying to install angular2 CLI. Now I am getting the same error for this package and I am not sure how to rectify it. I tried to unistall the CLI and then clear the cache and that didnt work.</p>
  
  <p>Could some one have a look at the error and let me know what steps I need to do to rectify this..</p>
  
  <p>The error as it appears on the cmd is as follows:</p>
  
  <pre><code>        C:\Users\simon\SPA\ANGULAR2 CALENDAR EXAMPLE&gt;npm install
  
      &gt; node-zopfli@1.4.0 install C:\Users\simon\node_modules\node-zopfli
      &gt; node-pre-gyp install --fallback-to-build
  
      node-pre-gyp ERR! Tried to download: https://node-zopfli.s3.amazonaws.com/Release/zopfli-v1.4.0-node-v48-win32-x64.tar.gz
      node-pre-gyp ERR! Pre-built binaries not found for node-zopfli@1.4.0 and node@6.6.0 (node-v48 ABI) (falling back to source compile with node-gyp)
      Building the projects in this solution one at a time. To enable parallel build, please add the "/m" switch.
      C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Platforms\x64\PlatformToolsets\v140\Toolset.targets(36,5): error
       MSB8036: The Windows SDK version 8.1 was not found. Install the required version of Windows SDK or change the SDK vers
      ion in the project property pages or by right-clicking the solution and selecting "Retarget solution". [C:\Users\simon\
      node_modules\node-zopfli\build\zopfli.vcxproj]
      gyp ERR! build error
      gyp ERR! stack Error: `C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe` failed with exit code: 1
      gyp ERR! stack     at ChildProcess.onExit (C:\Users\simon\node_modules\node-gyp\lib\build.js:276:23)
      gyp ERR! stack     at emitTwo (events.js:106:13)
      gyp ERR! stack     at ChildProcess.emit (events.js:191:7)
      gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)
      gyp ERR! System Windows_NT 10.0.14393
      gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\simon\\node_modules\\node-gyp\\bin\\node-gyp.js" "build" "--fallback-to-build" "--module=C:\\Users\\simon\\node_modules\\node-zopfli\\lib\\binding\\node-v48-win32-x64\\zopfli.node" "--module_name=zopfli" "--module_path=C:\\Users\\simon\\node_modules\\node-zopfli\\lib\\binding\\node-v48-win32-x64"
      gyp ERR! cwd C:\Users\simon\node_modules\node-zopfli
      gyp ERR! node -v v6.6.0
      gyp ERR! node-gyp -v v3.4.0
      gyp ERR! not ok
      node-pre-gyp ERR! build error
      node-pre-gyp ERR! stack Error: Failed to execute 'C:\Program Files\nodejs\node.exe C:\Users\simon\node_modules\node-gyp\bin\node-gyp.js build --fallback-to-build --module=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64\zopfli.node --module_name=zopfli --module_path=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64' (1)
      node-pre-gyp ERR! stack     at ChildProcess.&lt;anonymous&gt; (C:\Users\simon\node_modules\node-pre-gyp\lib\util\compile.js:83:29)
      node-pre-gyp ERR! stack     at emitTwo (events.js:106:13)
      node-pre-gyp ERR! stack     at ChildProcess.emit (events.js:191:7)
      node-pre-gyp ERR! stack     at maybeClose (internal/child_process.js:877:16)
      node-pre-gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
      node-pre-gyp ERR! System Windows_NT 10.0.14393
      node-pre-gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\simon\\node_modules\\node-pre-gyp\\bin\\node-pre-gyp" "install" "--fallback-to-build"
      node-pre-gyp ERR! cwd C:\Users\simon\node_modules\node-zopfli
      node-pre-gyp ERR! node -v v6.6.0
      node-pre-gyp ERR! node-pre-gyp -v v0.6.30
      node-pre-gyp ERR! not ok
      Failed to execute 'C:\Program Files\nodejs\node.exe C:\Users\simon\node_modules\node-gyp\bin\node-gyp.js build --fallback-to-build --module=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64\zopfli.node --module_name=zopfli --module_path=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64' (1)
  </code></pre>
  
  <p>I am on node.js 6.6.0 and npm 3.10.3</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>I was hoping Luiz answer...</p>
  
  <pre><code>npm install -g node-gyp
  </code></pre>
  
  <p>would work but unfortunately, whist the install worked perfectly for gym.. I got these errors.. as follows...</p>
  
  <pre><code>    &gt; node-zopfli@1.4.0 install C:\Users\simon\node_modules\node-zopfli
  &gt; node-pre-gyp install --fallback-to-build
  
  node-pre-gyp ERR! Tried to download: https://node-zopfli.s3.amazonaws.com/Release/zopfli-v1.4.0-node-v48-win32-x64.tar.gz
  node-pre-gyp ERR! Pre-built binaries not found for node-zopfli@1.4.0 and node@6.6.0 (node-v48 ABI) (falling back to source compile with node-gyp)
  Building the projects in this solution one at a time. To enable parallel build, please add the "/m" switch.
  C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Platforms\x64\PlatformToolsets\v140\Toolset.targets(36,5): error MSB8036: The Windows SDK version 8.1 was not found. Install the required version of Windows SDK or change the SDK version in the project property pages or by right-clicking the solution and select
  ing "Retarget solution". [C:\Users\simon\node_modules\node-zopfli\build\zopfli.vcxproj]
  gyp ERR! build error
  gyp ERR! stack Error: `C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe` failed with exit code: 1
  gyp ERR! stack     at ChildProcess.onExit (C:\Users\simon\node_modules\node-gyp\lib\build.js:276:23)
  gyp ERR! stack     at emitTwo (events.js:106:13)
  gyp ERR! stack     at ChildProcess.emit (events.js:191:7)
  gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)
  gyp ERR! System Windows_NT 10.0.14393
  gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\simon\\node_modules\\node-gyp\\bin\\node-gyp.js" "build" "--fallback-to-build" "--module=C:\\Users\\simon\\node_modules\\node-zopfli\\lib\\binding\\node-v48-win32-x64\\zopfli.node" "--module_name=zopfli" "--module_path=C:\\Users\\simon\\node_modules\\node-zopfli\\lib\\binding\\node-v48-win32-x64"
  gyp ERR! cwd C:\Users\simon\node_modules\node-zopfli
  gyp ERR! node -v v6.6.0
  gyp ERR! node-gyp -v v3.4.0
  gyp ERR! not ok
  node-pre-gyp ERR! build error
  node-pre-gyp ERR! stack Error: Failed to execute 'C:\Program Files\nodejs\node.exe C:\Users\simon\node_modules\node-gyp\bin\node-gyp.js build --fallback-to-build --module=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64\zopfli.node --module_name=zopfli --module_path=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64' (1)
  node-pre-gyp ERR! stack     at ChildProcess.&lt;anonymous&gt; (C:\Users\simon\node_modules\node-pre-gyp\lib\util\compile.js:83:29)
  node-pre-gyp ERR! stack     at emitTwo (events.js:106:13)
  node-pre-gyp ERR! stack     at ChildProcess.emit (events.js:191:7)
  node-pre-gyp ERR! stack     at maybeClose (internal/child_process.js:877:16)
  node-pre-gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
  node-pre-gyp ERR! System Windows_NT 10.0.14393
  node-pre-gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\simon\\node_modules\\node-pre-gyp\\bin\\node-pre-gyp" "install" "--fallback-to-build"
  node-pre-gyp ERR! cwd C:\Users\simon\node_modules\node-zopfli
  node-pre-gyp ERR! node -v v6.6.0
  node-pre-gyp ERR! node-pre-gyp -v v0.6.30
  node-pre-gyp ERR! not ok
  Failed to execute 'C:\Program Files\nodejs\node.exe C:\Users\simon\node_modules\node-gyp\bin\node-gyp.js build --fallback-to-build --module=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64\zopfli.node --module_name=zopfli --module_path=C:\Users\simon\node_modules\node-zopfli\lib\binding\node-v48-win32-x64' (1)
  npm WARN install:node-zopfli@1.4.0 node-zopfli@1.4.0 install: `node-pre-gyp install --fallback-to-build`
  npm WARN install:node-zopfli@1.4.0 Exit status 1
  npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
  npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.0.14
  npm WARN enoent ENOENT: no such file or directory, open 'C:\Users\simon\package.json'
  npm WARN @ng-bootstrap/ng-bootstrap@1.0.0-alpha.6 requires a peer of @angular/forms@^2.0.0 but none was installed.
  npm WARN string-replace-loader@1.0.4 requires a peer of webpack@1.x.x || 2.x.x || 2.x.x-beta but none was installed.
  npm WARN simon No description
  npm WARN simon No repository field.
  npm WARN simon No README data
  npm WARN simon No license field.
  </code></pre>
  
  <p>There appears to be more issues.. any more ideas</p>