Add web front-end and fix API issues

node_modules/concurrently/dist/lib/flow-control/teardown.d.ts

@@ -0,0 +1,20 @@
+import { Command, SpawnCommand } from '../command.js';
+import { Logger } from '../logger.js';
+import { FlowController } from './flow-controller.js';
+export declare class Teardown implements FlowController {
+    private readonly logger;
+    private readonly spawn;
+    private readonly teardown;
+    constructor({ logger, spawn, commands, }: {
+        logger: Logger;
+        /**
+         * Which function to use to spawn commands.
+         */
+        spawn: SpawnCommand;
+        commands: readonly string[];
+    });
+    handle(commands: Command[]): {
+        commands: Command[];
+        onFinish: () => Promise<void>;
+    };
+}