Alternative npm.cmd for VS201X node tools integration. Caches npm ls -g result until a different npm command is issued.

npm.cmd

:: VS201X alternative for %APPDATA%\nodejs\npm.cmd
@ECHO OFF
SETLOCAL

SET "NODE_EXE=%~dp0\node.exe"
IF NOT EXIST %NODE_EXE% (
  SET PATHEXT=%PATHEXT:;.JS;=;%
  SET "NODE_EXE=node"
)

SET "OUTDIR=%~dp0"

IF "%1 %2 %3"=="ls -g " (
  IF NOT EXIST "%OUTDIR%\npm.ls-g.cache" (
    %NODE_EXE% "%~dp0\node_modules\npm\bin\npm-cli.js" %*>>"%OUTDIR%\npm.ls-g.cache"
  )
  FOR /F "tokens=2 delims=:" %%F IN ('CALL CHCP') DO (
    SET "LS-GCHCP=%%F"
  )
  CHCP 65001>nul
  TYPE "%OUTDIR%\npm.ls-g.cache"
  CHCP %LS-GCHCP%>nul
) ELSE (
  ERASE "%OUTDIR%\npm.ls-g.cache" 2>nul
  %NODE_EXE% "%~dp0\node_modules\npm\bin\npm-cli.js" %*
)

Good job, it helped!
I forked and updated it to maintain npm original behavior. See it here: https://gist.github.com/giggio/1ba8168628c38b397bde