chore: add npm wrapper

npmw

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+basedir=`dirname "$0"`
+
+if [ -f "$basedir/mvnw" ]; then
+  bindir="$basedir/target/node"
+  repodir="$basedir/target/node/node_modules"
+  installCommand="$basedir/mvnw -Pwebapp frontend:install-node-and-npm@install-node-and-npm"
+
+  PATH="$basedir/$builddir/:$PATH"
+  NPM_EXE="$basedir/$builddir/node_modules/npm/bin/npm-cli.js"
+  NODE_EXE="$basedir/$builddir/node"
+elif [ -f "$basedir/gradlew" ]; then
+  bindir="$basedir/build/node/bin"
+  repodir="$basedir/build/node/lib/node_modules"
+  installCommand="$basedir/gradlew npmSetup"
+else
+  echo "Using npm installed globally"
+  exec npm "$@"
+fi
+
+NPM_EXE="$repodir/npm/bin/npm-cli.js"
+NODE_EXE="$bindir/node"
+
+if [ ! -x "$NPM_EXE" ] || [ ! -x "$NODE_EXE" ]; then
+  $installCommand || true
+fi
+
+if [ -x "$NODE_EXE" ]; then
+  echo "Using node installed locally $($NODE_EXE --version)"
+  PATH="$bindir:$PATH"
+else
+  NODE_EXE='node'
+fi
+
+if [ ! -x "$NPM_EXE" ]; then
+  echo "Local npm not found, using npm installed globally"
+  npm "$@"
+else
+  echo "Using npm installed locally $($NODE_EXE $NPM_EXE --version)"
+  $NODE_EXE $NPM_EXE "$@"
+fi

npmw.cmd

@@ -0,0 +1,31 @@
+@echo off
+
+setlocal
+
+set NPMW_DIR=%~dp0
+
+if exist "%NPMW_DIR%mvnw.cmd" (
+  set NODE_EXE=^"^"
+  set NODE_PATH=%NPMW_DIR%target\node\
+  set NPM_EXE=^"%NPMW_DIR%target\node\npm.cmd^"
+  set INSTALL_NPM_COMMAND=^"%NPMW_DIR%mvnw.cmd^" -Pwebapp frontend:install-node-and-npm@install-node-and-npm
+) else (
+  set NODE_EXE=^"%NPMW_DIR%build\node\bin\node.exe^"
+  set NODE_PATH=%NPMW_DIR%build\node\bin\
+  set NPM_EXE=^"%NPMW_DIR%build\node\lib\node_modules\npm\bin\npm-cli.js^"
+  set INSTALL_NPM_COMMAND=^"%NPMW_DIR%gradlew.bat^" npmSetup
+)
+
+if not exist %NPM_EXE% (
+  call %INSTALL_NPM_COMMAND% 
+)
+
+if exist %NODE_EXE% (
+  Rem execute local npm with local node, whilst adding local node location to the PATH for this CMD session
+  endlocal & echo "%PATH%"|find /i "%NODE_PATH%;">nul || set "PATH=%NODE_PATH%;%PATH%" & call %NODE_EXE% %NPM_EXE% %*
+) else if exist %NPM_EXE% (
+  Rem execute local npm, whilst adding local npm location to the PATH for this CMD session
+  endlocal & echo "%PATH%"|find /i "%NODE_PATH%;">nul || set "PATH=%NODE_PATH%;%PATH%" & call %NPM_EXE% %*
+) else (
+  call npm %*
+)