Finalize TerminalExitReason API

Fixes #130231

src/vs/workbench/services/extensions/common/extensionsApiProposals.ts

@@ -60,7 +60,6 @@ export const allApiProposals = Object.freeze({
 	telemetry: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.telemetry.d.ts',
 	terminalDataWriteEvent: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.terminalDataWriteEvent.d.ts',
 	terminalDimensions: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.terminalDimensions.d.ts',
-	terminalExitReason: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.terminalExitReason.d.ts',
 	testCoverage: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.testCoverage.d.ts',
 	testObserver: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.testObserver.d.ts',
 	textSearchProvider: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.textSearchProvider.d.ts',

src/vscode-dts/vscode.d.ts

@@ -10822,6 +10822,41 @@ declare module 'vscode' {
 		 *   without providing an exit code.
 		 */
 		readonly code: number | undefined;
+
+		/**
+		 * The reason that triggered the exit of a terminal.
+		 */
+		readonly reason: TerminalExitReason;
+	}
+
+	/**
+	 * Terminal exit reason kind.
+	 */
+	export enum TerminalExitReason {
+		/**
+		 * Unknown reason.
+		 */
+		Unknown = 0,
+
+		/**
+		 * The window closed/reloaded.
+		 */
+		Shutdown = 1,
+
+		/**
+		 * The shell process exited.
+		 */
+		Process = 2,
+
+		/**
+		 * The user closed the terminal.
+		 */
+		User = 3,
+
+		/**
+		 * An extension disposed the terminal.
+		 */
+		Extension = 4,
 	}
 
 	/**