node 12 support

[huineng]

Node 12 just got release , but ibm_db 2.5.0 got an error when installing the driver

Downloading and extraction of DB2 ODBC CLI Driver completed successfully ...
  CXX(target) Release/obj.target/odbc_bindings/src/odbc.o
Error: Command failed: node-gyp configure build  --IS_DOWNLOADED=true --IBM_DB_HOME="$IBM_DB_HOME"
In file included from ../src/odbc.cpp:28:
In file included from ../src/odbc.h:23:
In file included from ../../nan/nan.h:222:
In file included from ../../nan/nan_converters.h:67:
../../nan/nan_converters_43_inl.h:22:1: warning: 'ToBoolean' is deprecated: ToBoolean can never throw. Use Local version. [-Wdeprecated-declarations]
X(Boolean)
^
../../nan/nan_converters_43_inl.h:18:12: note: expanded from macro 'X'
      val->To ## TYPE(isolate->GetCurrentContext())                            \
           ^
<scratch space>:427:1: note: expanded from here
ToBoolean
^
/Users/guyhuinen/.node-gyp/12.0.0/include/node/v8.h:2523:3: note: 'ToBoolean' has been explicitly marked deprecated here
  V8_DEPRECATE_SOON("ToBoolean can never throw. Use Local version.",
  ^
/Users/guyhuinen/.node-gyp/12.0.0/include/node/v8config.h:322:29: note: expanded from macro 'V8_DEPRECATE_SOON'
  declarator __attribute__((deprecated(message)))
                            ^
In file included from ../src/odbc.cpp:28:
In file included from ../src/odbc.h:23:
In file included from ../../nan/nan.h:222:
In file included from ../../nan/nan_converters.h:67:
../../nan/nan_converters_43_inl.h:40:1: warning: 'BooleanValue' is deprecated: BooleanValue can never throw. Use Isolate version. [-Wdeprecated-declarations]
X(bool, Boolean)
^
../../nan/nan_converters_43_inl.h:37:15: note: expanded from macro 'X'
  return val->NAME ## Value(isolate->GetCurrentContext());   

[bimalkjha]

@huineng nan need to be enhanced to support this new version of node.js. We have to wait till the next release of nan with support of node v12.x. Nan update should handle this issue. Thanks.

[huineng]

nodejs/nan#849

[huineng]

Can you have a look at the comments nodejs/nan#849 .The issues is closed in nan as thy have no reason to belief the latest wouldn't support node 12.

[yikuanlee]

We plan to move to node12 from 10. Any update for nan and nodejs 12 support ?

[bimalkjha]

@yikuanlee We are working on it and support should be available soon. Thanks.

[bimalkjha]

ibm_db@2.6.0 supports node.js v12.x. Thanks.