FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
1: node::Abort() [.nvm/versions/node/v7.2.0/bin/node]
2: node::FatalException(v8::Isolate*, v8::Local, v8::Local) [.nvm/versions/node/v7.2.0/bin/node]
3: v8::internal::V8::FatalProcessOutOfMemory(char const*, bool) [.nvm/versions/node/v7.2.0/bin/node]
4: v8::internal::Factory::NewRawTwoByteString(int, v8::internal::PretenureFlag) [.nvm/versions/node/v7.2.0/bin/node]
5: v8::internal::Runtime_StringBuilderJoin(int, v8::internal::Object**, v8::internal::Isolate*) [.nvm/versions/node/v7.2.0/bin/node]
6: 0x5d1faa063a7