Build starter.

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch Program with debugger",
+            "type": "node",
+            "request": "launch",
+            "cwd": "${workspaceFolder}",
+            "runtimeExecutable": "npm",
+            "runtimeArgs": [
+                "start"
+            ],
+            "port": 5858
+        }
+    ]
+}