`npm install` fails under Node 4.0.0

[dbkaplun]

 01:57:26  dan@elise:~/stuff/text-buffer   master ✔ 
$ npm install
npm WARN package.json text-buffer@7.0.2 No license field.
npm WARN installMany asserts.js was bundled with testla@0.1.3, but bundled package wasn't found in unpacked tree
npm WARN installMany fn.js was bundled with testla@0.1.3, but bundled package wasn't found in unpacked tree
npm WARN installMany observer.js was bundled with testla@0.1.3, but bundled package wasn't found in unpacked tree

> runas@2.0.0 install /Users/dan/stuff/text-buffer/node_modules/pathwatcher/node_modules/runas
> node-gyp rebuild

  CXX(target) Release/obj.target/runas/src/main.o
In file included from ../src/main.cc:1:
../../nan/nan.h:260:25: error: redefinition of '_NanEnsureLocal'
NAN_INLINE v8::Local<T> _NanEnsureLocal(v8::Local<T> val) {
                        ^
../../nan/nan.h:255:25: note: previous definition is here
NAN_INLINE v8::Local<T> _NanEnsureLocal(v8::Handle<T> val) {
                        ^
../../nan/nan.h:660:13: error: no member named 'smalloc' in namespace 'node'
    , node::smalloc::FreeCallback callback
      ~~~~~~^
../../nan/nan.h:671:12: error: no matching function for call to 'New'
    return node::Buffer::New(v8::Isolate::GetCurrent(), data, size);
           ^~~~~~~~~~~~~~~~~
/Users/dan/.node-gyp/4.0.0/src/node_buffer.h:31:40: note: candidate function not viable: no known conversion from
      'uint32_t' (aka 'unsigned int') to 'enum encoding' for 3rd argument
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate,
                                       ^
/Users/dan/.node-gyp/4.0.0/src/node_buffer.h:43:40: note: candidate function not viable: 2nd argument ('const char *')
      would lose const qualifier
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate,
                                       ^
/Users/dan/.node-gyp/4.0.0/src/node_buffer.h:28:40: note: candidate function not viable: requires 2 arguments, but 3
      were provided
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate, size_t length);
                                       ^
/Users/dan/.node-gyp/4.0.0/src/node_buffer.h:36:40: note: candidate function not viable: requires 5 arguments, but 3
      were provided
NODE_EXTERN v8::MaybeLocal<v8::Object> New(v8::Isolate* isolate,
                                       ^
In file included from ../src/main.cc:1:
../../nan/nan.h:675:12: error: no viable conversion from 'v8::MaybeLocal<v8::Object>' to 'v8::Local<v8::Object>'
    return node::Buffer::New(v8::Isolate::GetCurrent(), size);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:210:7: note: candidate constructor (the implicit copy constructor) not
      viable: no known conversion from 'v8::MaybeLocal<v8::Object>' to 'const v8::Local<v8::Object> &' for 1st
      argument
class Local {
      ^
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:210:7: note: candidate constructor (the implicit move constructor) not
      viable: no known conversion from 'v8::MaybeLocal<v8::Object>' to 'v8::Local<v8::Object> &&' for 1st argument
class Local {
      ^
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:214:13: note: candidate template ignored: could not match 'Local'
      against 'MaybeLocal'
  V8_INLINE Local(Local<S> that)
            ^
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:326:13: note: candidate template ignored: could not match 'S *'
      against 'v8::MaybeLocal<v8::Object>'
  V8_INLINE Local(S* that)
            ^
In file included from ../src/main.cc:1:
../../nan/nan.h:682:26: error: no member named 'Use' in namespace 'node::Buffer'
    return node::Buffer::Use(v8::Isolate::GetCurrent(), data, size);
           ~~~~~~~~~~~~~~^
In file included from ../src/main.cc:1:
In file included from ../../nan/nan.h:24:
In file included from /Users/dan/.node-gyp/4.0.0/src/node.h:42:
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:221:5: error: assigning to 'v8::Primitive *volatile' from incompatible
      type 'v8::Value *'
    TYPE_CHECK(T, S);
    ^~~~~~~~~~~~~~~~
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:180:37: note: expanded from macro 'TYPE_CHECK'
    *(static_cast<T* volatile*>(0)) = static_cast<S*>(0);      \
                                    ^ ~~~~~~~~~~~~~~~~~~
../../nan/nan.h:413:12: note: in instantiation of function template specialization
      'v8::Local<v8::Primitive>::Local<v8::Value>' requested here
    return NanEscapeScope(NanNew(v8::Undefined(v8::Isolate::GetCurrent())));
           ^
../../nan/nan.h:397:30: note: expanded from macro 'NanEscapeScope'
# define NanEscapeScope(val) scope.Escape(_NanEnsureLocal(val))
                             ^
In file included from ../src/main.cc:1:
In file included from ../../nan/nan.h:24:
In file included from /Users/dan/.node-gyp/4.0.0/src/node.h:42:
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:221:5: error: assigning to 'v8::Boolean *volatile' from incompatible
      type 'v8::Value *'
    TYPE_CHECK(T, S);
    ^~~~~~~~~~~~~~~~
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:180:37: note: expanded from macro 'TYPE_CHECK'
    *(static_cast<T* volatile*>(0)) = static_cast<S*>(0);      \
                                    ^ ~~~~~~~~~~~~~~~~~~
../../nan/nan.h:423:12: note: in instantiation of function template specialization
      'v8::Local<v8::Boolean>::Local<v8::Value>' requested here
    return NanEscapeScope(NanNew(v8::True(v8::Isolate::GetCurrent())));
           ^
../../nan/nan.h:397:30: note: expanded from macro 'NanEscapeScope'
# define NanEscapeScope(val) scope.Escape(_NanEnsureLocal(val))
                             ^
In file included from ../src/main.cc:1:
In file included from ../../nan/nan.h:24:
In file included from /Users/dan/.node-gyp/4.0.0/src/node.h:42:
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:221:5: error: assigning to 'v8::Function *volatile' from incompatible
      type 'v8::Value *'
    TYPE_CHECK(T, S);
    ^~~~~~~~~~~~~~~~
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:180:37: note: expanded from macro 'TYPE_CHECK'
    *(static_cast<T* volatile*>(0)) = static_cast<S*>(0);      \
                                    ^ ~~~~~~~~~~~~~~~~~~
../../nan/nan.h:1513:12: note: in instantiation of function template specialization
      'v8::Local<v8::Function>::Local<v8::Value>' requested here
    return NanEscapeScope(NanNew(handle)->Get(kCallbackIndex)
           ^
../../nan/nan.h:397:30: note: expanded from macro 'NanEscapeScope'
# define NanEscapeScope(val) scope.Escape(_NanEnsureLocal(val))
                             ^
In file included from ../src/main.cc:1:
In file included from ../../nan/nan.h:24:
In file included from /Users/dan/.node-gyp/4.0.0/src/node.h:42:
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:221:5: error: assigning to 'v8::Object *volatile' from incompatible
      type 'v8::Value *'
    TYPE_CHECK(T, S);
    ^~~~~~~~~~~~~~~~
/Users/dan/.node-gyp/4.0.0/deps/v8/include/v8.h:180:37: note: expanded from macro 'TYPE_CHECK'
    *(static_cast<T* volatile*>(0)) = static_cast<S*>(0);      \
                                    ^ ~~~~~~~~~~~~~~~~~~
../../nan/nan.h:1631:12: note: in instantiation of function template specialization
      'v8::Local<v8::Object>::Local<v8::Value>' requested here
    return NanEscapeScope(handle->Get(NanNew(key)).As<v8::Object>());
           ^
../../nan/nan.h:397:30: note: expanded from macro 'NanEscapeScope'
# define NanEscapeScope(val) scope.Escape(_NanEnsureLocal(val))
                             ^
9 errors generated.
make: *** [Release/obj.target/runas/src/main.o] Error 1
gyp ERR! build error
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:269:23)
gyp ERR! stack     at emitTwo (events.js:87:13)
gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:200:12)
gyp ERR! System Darwin 14.5.0
gyp ERR! command "/usr/local/bin/iojs" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/dan/stuff/text-buffer/node_modules/pathwatcher/node_modules/runas
gyp ERR! node -v v4.0.0
gyp ERR! node-gyp -v v2.0.2
gyp ERR! not ok

> coffeelint@0.5.7 install /Users/dan/stuff/text-buffer/node_modules/grunt-coffeelint/node_modules/coffeelint
> [ -e lib/commandline.js ] || npm run compile

npm ERR! Darwin 14.5.0
npm ERR! argv "/usr/local/bin/iojs" "/usr/local/bin/npm" "install"
npm ERR! node v4.0.0
npm ERR! npm  v2.14.3
npm ERR! code ELIFECYCLE

npm ERR! runas@2.0.0 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the runas@2.0.0 install script 'node-gyp rebuild'.
npm ERR! This is most likely a problem with the runas package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-gyp rebuild
npm ERR! You can get their info via:
npm ERR!     npm owner ls runas
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/dan/stuff/text-buffer/npm-debug.log

[winstliu]

In this case the pathwatcher dependency needs to be updated.