Simple tests for node debugger

README.md

@@ -87,6 +87,7 @@ on a best-efforts basis:
 - Java (see caveats)
 - C# (c-sharp) using dotnet core
 - Go (requires separate installation of [Delve][])
+- Node.js (requires node <12 for installation)
 
 ## Languages known not to work
 
@@ -160,6 +161,7 @@ The debug adapters themselves have certain runtime dependencies:
 | C# (dotnet core) | Experimental | `--force-enable-csharp`      | netcoredbg        | DotNet core            |
 | C# (mono)        | Experimental | `--force-enable-csharp`      | vscode-mono-debug | Mono                   |
 | Go               | Experimental | `--enable-go`                | vscode-go         | Go, [Delve][]          |
+| Node.js          | Experimental | `--force-enable-node`        | vscode-node-debug2 | 6 < Node < 12, Npm    |
 
 For other languages, you'll need some other way to install the gadget.
 
@@ -605,6 +607,36 @@ Requires:
 }
 ```
 
+* Node.js
+
+Requires:
+
+* `install_gadget.py --force-enable-node`
+* For installation, a Node.js environemt that is < node 12. I believe this is an
+  incompatibility with gulp. Advice, use [nvm][] with `nvm install --lts 10; nvm
+  use --lts 10; ./install_gadget.py --force-enable-node ...`
+
+* Options described here:
+  https://code.visualstudio.com/docs/nodejs/nodejs-debugging
+
+```json
+{
+  "configurations": {
+    "run": {
+      "adapter": "vscode-node",
+      "configuration": {
+        "request": "launch",
+        "protocol": "auto",
+        "stopOnEntry": true,
+        "console": "integratedTerminal",
+        "program": "${workspaceRoot}/simple.js",
+        "cwd": "${workspaceRoot}"
+      }
+    }
+  }
+}
+```
+
 Also the mock debugger, but that isn't actually useful.
 
 ## Partially supported

install_gadget.py

@@ -206,6 +206,25 @@ GADGETS = {
       },
     },
   },
+  'vscode-node-debug2': {
+    'language': 'node',
+    'enabled': False,
+    'repo': {
+      'url': 'https://github.com/microsoft/vscode-node-debug2',
+      'ref': 'v1.39.1',
+    },
+    'do': lambda name, root: InstallNodeDebug( name, root ),
+    'adapters': {
+      'vscode-node': {
+        'name': 'node2',
+        'type': 'node2',
+        'command': [
+          'node',
+          '${gadgetDir}/vscode-node-debug2/out/src/nodeDebug.js'
+        ]
+      },
+    },
+  },
 }
 
 
@@ -279,6 +298,26 @@ def InstallTclProDebug( name, root ):
   MakeSymlink( gadget_dir, name, root )
 
 
+def InstallNodeDebug( name, root ):
+  node_version = subprocess.check_output( [ 'node', '--version' ] ).strip()
+  print( "Node.js version: {}".format( node_version ) )
+  if map( int, node_version[ 1: ].split( '.' ) ) >= [ 12, 0, 0 ]:
+    print( "Can't install vscode-debug-node2:" )
+    print( "Sorry, you appear to be running node 12 or later. That's not "
+           "compatible with the build system for this extension, and as far as "
+           "we know, there isn't a pre-built independent package." )
+    print( "My advice is to install nvm, then do:" )
+    print( "  $ nvm install --lts 10" )
+    print( "  $ nvm use --lts 10" )
+    print( "  $ ./install_gadget.py --enable-node ..." )
+    raise RuntimeError( 'Invalid node environent for node debugger' )
+
+  with CurrentWorkingDir( root ):
+    subprocess.check_call( [ 'npm', 'install' ] )
+    subprocess.check_call( [ 'npm', 'run', 'build' ] )
+  MakeSymlink( gadget_dir, name, root )
+
+
 def DownloadFileTo( url, destination, file_name = None, checksum = None ):
   if not file_name:
     file_name = url.split( '/' )[ -1 ]
@@ -396,6 +435,12 @@ def CloneRepoTo( url, ref, destination ):
   RemoveIfExists( destination )
   subprocess.check_call( [ 'git', 'clone', url, destination ] )
   subprocess.check_call( [ 'git', '-C', destination, 'checkout', ref ] )
+  subprocess.check_call( [ 'git', 'submodule', 'sync', '--recursive' ] )
+  subprocess.check_call( [ 'git',
+                           'submodule',
+                           'update',
+                           '--init',
+                           '--recursive' ] )
 
 
 OS = install.GetOS()

support/test/node/simple/.tern-project

@@ -0,0 +1,5 @@
+{
+  "plugins": {
+    "node": {}
+  }
+}

support/test/node/simple/.vimspector.json

@@ -0,0 +1,15 @@
+{
+  "configurations": {
+    "run": {
+      "adapter": "vscode-node",
+      "configuration": {
+        "request": "launch",
+        "protocol": "auto",
+        "stopOnEntry": true,
+        "console": "integratedTerminal",
+        "program": "${workspaceRoot}/simple.js",
+        "cwd": "${workspaceRoot}"
+      }
+    }
+  }
+}

support/test/node/simple/simple.js

@@ -0,0 +1,3 @@
+var msg = 'Hello, world!'
+
+console.log( "OK stuff happened" )