feat: add predeactivate hooks for Windows

- Implemented predeactivate hooks for Windows, creating both predeactivate.bat and predeactivate.ps1 files.
- Updated set_predeactivate_hook function to handle both Windows and Unix systems.
- Enhanced tests to verify the creation and content of predeactivate hooks based on the operating system.

Author: ekalinin

nodeenv.py

@@ -986,7 +986,14 @@ def install_activate(env_dir, args):
 
 
 def set_predeactivate_hook(env_dir):
-    if not is_WIN:
+    if is_WIN:
+        # Windows: create predeactivate.bat for CMD and predeactivate.ps1 for PowerShell
+        with open(join(env_dir, 'Scripts', 'predeactivate.bat'), 'a') as hook:
+            hook.write(PREDEACTIVATE_BAT)
+        with open(join(env_dir, 'Scripts', 'predeactivate.ps1'), 'a') as hook:
+            hook.write(PREDEACTIVATE_PS1)
+    else:
+        # Unix: create predeactivate for bash/sh
         with open(join(env_dir, 'bin', 'predeactivate'), 'a') as hook:
             hook.write(PREDEACTIVATE_SH)
 
@@ -1564,6 +1571,21 @@ def main():
 if type -p deactivate_node > /dev/null; then deactivate_node;fi
 """
 
+PREDEACTIVATE_BAT = """\
+@echo off
+REM Deactivate Node.js environment
+if exist "%NODE_VIRTUAL_ENV%\\Scripts\\deactivate.bat" (
+    call "%NODE_VIRTUAL_ENV%\\Scripts\\deactivate.bat"
+)
+"""
+
+PREDEACTIVATE_PS1 = """\
+# Deactivate Node.js environment
+if (Get-Command deactivate -ErrorAction SilentlyContinue) {
+    deactivate
+}
+"""
+
 CYGWIN_NODE = """#!/bin/sh
 
 if [ -r "$1" ]; then

tests/nodeenv_test.py

@@ -116,10 +116,25 @@ def test_predeactivate_hook(tmpdir):
     # Throw error if environment directory has no bin path
     with pytest.raises((OSError, IOError)):
         nodeenv.set_predeactivate_hook(tmpdir.strpath)
-    tmpdir.mkdir('bin')
-    nodeenv.set_predeactivate_hook(tmpdir.strpath)
-    p = tmpdir.join('bin').join('predeactivate')
-    assert 'deactivate_node' in p.read()
+
+    if nodeenv.is_WIN:
+        tmpdir.mkdir('Scripts')
+        nodeenv.set_predeactivate_hook(tmpdir.strpath)
+        # Check BAT file
+        p_bat = tmpdir.join('Scripts').join('predeactivate.bat')
+        assert p_bat.exists()
+        content_bat = p_bat.read()
+        assert 'deactivate.bat' in content_bat
+        # Check PS1 file
+        p_ps1 = tmpdir.join('Scripts').join('predeactivate.ps1')
+        assert p_ps1.exists()
+        assert 'deactivate' in p_ps1.read()
+    else:
+        tmpdir.mkdir('bin')
+        nodeenv.set_predeactivate_hook(tmpdir.strpath)
+        p = tmpdir.join('bin').join('predeactivate')
+        assert 'deactivate_node' in p.read()
+
 
 
 def test_mirror_option():