Move to TypeScript

.gitignore

@@ -1,3 +1,6 @@
 *.zip
 PowerShellEditorServices/
 .pses
+node_modules
+out
+yarn.lock

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    // 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": [
+        {
+            "type": "node",
+            "request": "attach",
+            "name": "Attach by Process ID",
+            "processId": "${command:PickProcess}"
+        }
+    ]
+}

build.ps1

@@ -0,0 +1,18 @@
+param(
+    # Runs the watch npm command instead.
+    [Parameter()]
+    [switch]
+    $Watch
+)
+
+if (!(Get-Command npm)) {
+    throw "You must install Node.js & npm."
+}
+
+npm install
+
+if ($Watch.IsPresent) {
+    npm run watch
+} else {
+    npm run compile
+}