title: Not able to Quick Start on Theia
body: <p>I am trying to create PoC using theia. Going through 
  <a href="https://github.com/theia-ide/theia/blob/master/doc/Developing.md" rel="nofollow noreferrer">https://github.com/theia-ide/theia/blob/master/doc/Developing.md</a> </p>
  
  <p>Running it on Ubuntu 16.04. git clone <a href="https://github.com/theia-ide/theia" rel="nofollow noreferrer">https://github.com/theia-ide/theia</a> is done. But when I am trying to run yarn; I am getting following errors:</p>
  
  <pre><code>ubuntu@ip-172-30-0-179:~/theia/theia$ yarn
  yarn install v1.9.4
  [1/5] Validating package.json...
  [2/5] Resolving packages...
  success Already up-to-date.
  $ yarn rebuild:clean &amp;&amp; yarn build:clean
  yarn run v1.9.4
  $ rimraf .browser_modules
  Done in 0.20s.
  yarn run v1.9.4
  $ run prepare
  lerna info version 2.11.0
  @theia/ext-scripts: $ echo 'skip'
  @theia/ext-scripts: skip
  @theia/application-package: $ yarn run clean &amp;&amp; yarn run build
  @theia/plugin: $ yarn run clean &amp;&amp; yarn run build
  @theia/application-package: $ theiaext clean
  @theia/plugin: $ theiaext clean
  @theia/application-package: $ theiaext build
  @theia/plugin: $ theiaext build
  @theia/plugin: [compile] Killed
  @theia/plugin: [compile] theiaext compile exited with code 137
  @theia/plugin: [lint] Killed
  @theia/plugin: [lint] theiaext lint exited with code 137
  @theia/plugin: info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  @theia/plugin: error Command failed with exit code 1.
  @theia/plugin: info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  @theia/plugin: error Command failed with exit code 1.
  lerna ERR! execute callback with error
  lerna ERR! Error: Command failed: yarn run prepare
  lerna ERR! error Command failed with exit code 1.
  lerna ERR! error Command failed with exit code 1.
  lerna ERR!
  lerna ERR! $ yarn run clean &amp;&amp; yarn run build
  lerna ERR! $ theiaext clean
  lerna ERR! $ theiaext build
  lerna ERR! [compile] Killed
  lerna ERR! [compile] theiaext compile exited with code 137
  lerna ERR! [lint] Killed
  lerna ERR! [lint] theiaext lint exited with code 137
  lerna ERR! info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  lerna ERR! info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  lerna ERR!
  lerna ERR!     at Promise.all.then.arr (/home/ubuntu/theia/theia/node_modules/lerna/node_modules/execa/index.js:236:11)
  lerna ERR!     at &lt;anonymous&gt;
  lerna WARN complete Waiting for 1 child process to exit. CTRL-C to exit immediately.
  @theia/application-package: [lint] theiaext lint exited with code 0
  @theia/application-package: [compile] theiaext compile exited with code 0
  { Error: Command failed: yarn run prepare
  error Command failed with exit code 1.
  error Command failed with exit code 1.
  
  $ yarn run clean &amp;&amp; yarn run build
  $ theiaext clean
  $ theiaext build
  [compile] Killed
  [compile] theiaext compile exited with code 137
  [lint] Killed
  [lint] theiaext lint exited with code 137
  info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  
      at Promise.all.then.arr (/home/ubuntu/theia/theia/node_modules/lerna/node_modules/execa/index.js:236:11)
      at &lt;anonymous&gt;
      at process._tickCallback (internal/process/next_tick.js:188:7)
    code: 1,
    killed: false,
    stdout: '$ yarn run clean &amp;&amp; yarn run build\n$ theiaext clean\n$ theiaext build\n[compile] Killed\n[compile] theiaext compile exited with code 137\n[lint] Killed\n[lint] theiaext lint exited with code 137\ninfo Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.\ninfo Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.\n',
    stderr: 'error Command failed with exit code 1.\nerror Command failed with exit code 1.\n',
    failed: true,
    signal: null,
    cmd: 'yarn run prepare',
    timedOut: false,
    exitCode: 1 }
  error Command failed with exit code 1.
  info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
  error Command failed with exit code 1.
  info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
  </code></pre>
  
  <p>After increasing memory; I am getting following error:</p>
  
  <blockquote>
    <p>error /home/ubuntu/theia/node_modules/vscode-nsfw: Command failed.
    Exit code: 1</p>
  </blockquote>
  
  <p>Full console is:</p>
  
  <pre><code>ubuntu@ip-10-169-135-35:~/theia$ yarn
  yarn install v1.9.4
  [1/5] Validating package.json...
  [2/5] Resolving packages...
  [3/5] Fetching packages...
  [-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------] 0/1648(node:4457) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
  warning monaco-languageclient@0.9.0: The engine "vscode" appears to be invalid.
  warning vscode-base-languageclient@4.4.0: The engine "vscode" appears to be invalid.
  info fsevents@1.2.4: The platform "linux" is incompatible with this module.
  info "fsevents@1.2.4" is an optional dependency and failed compatibility check. Excluding it from installation.
  [4/5] Linking dependencies...
  warning " &gt; istanbul-instrumenter-loader@3.0.1" has unmet peer dependency "webpack@^2.0.0 || ^3.0.0 || ^4.0.0".
  warning "workspace-aggregator-e2635a1a-c6a1-46eb-92c2-8d23c5dea8b0 &gt; @theia/application-manager &gt; font-awesome-webpack@0.0.5-beta.2" has unmet peer dependency "font-awesome@&gt;=4.3.0".
  [5/5] Building fresh packages...
  [1/9] ⠄ fibers
  [7/9] ⠄ dugite
  [3/9] ⡀ electron
  [4/9] ⡀ vscode-nsfw
  error /home/ubuntu/theia/node_modules/vscode-nsfw: Command failed.
  Exit code: 1
  Command: node-gyp rebuild
  Arguments:
  Directory: /home/ubuntu/theia/node_modules/vscode-nsfw
  Output:
  gyp info it worked if it ends with ok
  gyp info using node-gyp@3.8.0
  gyp info using node@10.10.0 | linux | x64
  gyp info spawn /usr/bin/python2
  gyp info spawn args [ '/home/ubuntu/theia/node_modules/node-gyp/gyp/gyp_main.py',
  gyp info spawn args   'binding.gyp',
  gyp info spawn args   '-f',
  gyp info spawn args   'make',
  gyp info spawn args   '-I',
  gyp info spawn args   '/home/ubuntu/theia/node_modules/vscode-nsfw/build/config.gypi',
  gyp info spawn args   '-I',
  gyp info spawn args   '/home/ubuntu/theia/node_modules/node-gyp/addon.gypi',
  gyp info spawn args   '-I',
  gyp info spawn args   '/home/ubuntu/.node-gyp/10.10.0/include/node/common.gypi',
  gyp info spawn args   '-Dlibrary=shared_library',
  gyp info spawn args   '-Dvisibility=default',
  gyp info spawn args   '-Dnode_root_dir=/home/ubuntu/.node-gyp/10.10.0',
  gyp info spawn args   '-Dnode_gyp_dir=/home/ubuntu/theia/node_modules/node-gyp',
  gyp info spawn args   '-Dnode_lib_file=/home/ubuntu/.node-gyp/10.10.0/&lt;(target_arch)/node.lib',
  gyp info spawn args   '-Dmodule_root_dir=/home/ubuntu/theia/node_modules/vscode-nsfw',
  gyp info spawn args   '-Dnode_engine=v8',
  gyp info spawn args   '--depth=.',
  gyp info spawn args   '--no-parallel',
  gyp info spawn args   '--generator-output',
  gyp info spawn args   'build',
  gyp info spawn args   '-Goutput_dir=.' ]
  gyp info spawn make
  gyp info spawn args [ 'BUILDTYPE=Release', '-C', 'build' ]
  make: Entering directory `/home/ubuntu/theia/node_modules/vscode-nsfw/build'
    CXX(target) Release/obj.target/nsfw/src/NSFW.o
  ../src/NSFW.cpp: In static member function ‘static void NSFW::fireErrorCallback(uv_async_t*)’:
  ../src/NSFW.cpp:56:44: warning: ‘v8::Local&lt;v8::Value&gt; Nan::Callback::Call(int, v8::Local&lt;v8::Value&gt;*) const’ is deprecated (declared at ../../nan/nan.h:1618) [-Wdeprecated-declarations]
     baton-&gt;nsfw-&gt;mErrorCallback-&gt;Call(1, argv);
                                              ^
  ../src/NSFW.cpp: In static member function ‘static void NSFW::fireEventCallback(uv_async_t*)’:
  ../src/NSFW.cpp:98:44: warning: ‘v8::Local&lt;v8::Value&gt; Nan::Callback::Call(int, v8::Local&lt;v8::Value&gt;*) const’ is deprecated (declared at ../../nan/nan.h:1618) [-Wdeprecated-declarations]
     baton-&gt;nsfw-&gt;mEventCallback-&gt;Call(1, argv);
                                              ^
  ../src/NSFW.cpp: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE NSFW::JSNew(Nan::NAN_METHOD_ARGS_TYPE)’:
  ../src/NSFW.cpp:159:49: error: no matching function for call to ‘v8::Function::NewInstance()’
       info.GetReturnValue().Set(cons-&gt;NewInstance());
                                                   ^
  ../src/NSFW.cpp:159:49: note: candidates are:
  In file included from /home/ubuntu/.node-gyp/10.10.0/include/node/node.h:63:0,
                   from ../../nan/nan.h:51,
                   from ../src/../includes/NSFW.h:5,
                   from ../src/NSFW.cpp:1:
  /home/ubuntu/.node-gyp/10.10.0/include/node/v8.h:3989:44: note: v8::MaybeLocal&lt;v8::Object&gt; v8::Function::NewInstance(v8::Local&lt;v8::Context&gt;, int, v8::Local&lt;v8::Value&gt;*) const
     V8_WARN_UNUSED_RESULT MaybeLocal&lt;Object&gt; NewInstance(
                                              ^
  /home/ubuntu/.node-gyp/10.10.0/include/node/v8.h:3989:44: note:   candidate expects 3 arguments, 0 provided
  /home/ubuntu/.node-gyp/10.10.0/include/node/v8.h:3992:44: note: v8::MaybeLocal&lt;v8::Object&gt; v8::Function::NewInstance(v8::Local&lt;v8::Context&gt;) const
     V8_WARN_UNUSED_RESULT MaybeLocal&lt;Object&gt; NewInstance(
                                              ^
  /home/ubuntu/.node-gyp/10.10.0/include/node/v8.h:3992:44: note:   candidate expects 1 argument, 0 provided
  ../src/NSFW.cpp:177:54: warning: ‘v8::String::Utf8Value::Utf8Value(v8::Local&lt;v8::Value&gt;)’ is deprecated (declared at /home/ubuntu/.node-gyp/10.10.0/include/node/v8.h:2887): Use Isolate version [-Wdeprecated-declarations]
     v8::String::Utf8Value utf8Value(info[1]-&gt;ToString());
                                                        ^
  ../src/NSFW.cpp: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE NSFW::Start(Nan::NAN_METHOD_ARGS_TYPE)’:
  ../src/NSFW.cpp:208:27: warning: ‘v8::Local&lt;v8::Value&gt; Nan::Callback::Call(int, v8::Local&lt;v8::Value&gt;*) const’ is deprecated (declared at ../../nan/nan.h:1618) [-Wdeprecated-declarations]
       callback-&gt;Call(1, argv);
                             ^
  ../src/NSFW.cpp: In member function ‘virtual void NSFW::StartWorker::HandleOKCallback()’:
  ../src/NSFW.cpp:254:27: warning: ‘v8::Local&lt;v8::Value&gt; Nan::Callback::Call(int, v8::Local&lt;v8::Value&gt;*) const’ is deprecated (declared at ../../nan/nan.h:1618) [-Wdeprecated-declarations]
       callback-&gt;Call(1, argv);
                             ^
  ../src/NSFW.cpp:256:27: warning: ‘v8::Local&lt;v8::Value&gt; Nan::Callback::Call(int, v8::Local&lt;v8::Value&gt;*) const’ is deprecated (declared at ../../nan/nan.h:1618) [-Wdeprecated-declarations]
       callback-&gt;Call(0, NULL);
                             ^
  ../src/NSFW.cpp: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE NSFW::Stop(Nan::NAN_METHOD_ARGS_TYPE)’:
  ../src/NSFW.cpp:281:27: warning: ‘v8::Local&lt;v8::Value&gt; Nan::Callback::Call(int, v8::Local&lt;v8::Value&gt;*) const’ is deprecated (declared at ../../nan/nan.h:1618) [-Wdeprecated-declarations]
       callback-&gt;Call(1, argv);
                             ^
  ../src/NSFW.cpp: In member function ‘virtual void NSFW::StopWorker::HandleOKCallback()’:
  ../src/NSFW.cpp:323:25: warning: ‘v8::Local&lt;v8::Value&gt; Nan::Callback::Call(int, v8::Local&lt;v8::Value&gt;*) const’ is deprecated (declared at ../../nan/nan.h:1618) [-Wdeprecated-declarations]
     callback-&gt;Call(0, NULL);
                           ^
  make: *** [Release/obj.target/nsfw/src/NSFW.o] Error 1
  make: Leaving directory `/home/ubuntu/theia/node_modules/vscode-nsfw/build'
  gyp ERR! build error
  gyp ERR! stack Error: `make` failed with exit code: 2
  gyp ERR! stack     at ChildProcess.onExit (/home/ubuntu/theia/node_modules/node-gyp/lib/build.js:262:23)
  gyp ERR! stack     at ChildProcess.emit (events.js:182:13)
  gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:240:12)
  gyp ERR! System Linux 3.13.0-86-generic
  gyp ERR! command "/usr/local/bin/node" "/home/ubuntu/theia/node_modules/.bin/node-gyp" "rebuild"
  gyp ERR! cwd /home/ubuntu/theia/node_modules/vscode-nsfw
  </code></pre>
  
  <p>Any help is highly appreciated.</p>