Fix error caused by process dictionary not being reset

src/utils/subspawn.ts

@@ -5,7 +5,7 @@ Original library copyright (c) 2022 Craig Wardman
 I had to vendor this library to fix the API in a couple places.
 */
 
-import { ChildProcess, execSync, spawn, SpawnOptions } from 'child_process';
+import { ChildProcess, execSync, spawn, SpawnOptions } from "child_process";
 
 interface DictionaryOfStringChildProcessArray {
 	[key: string]: ChildProcess[];
@@ -20,29 +20,31 @@ export function killSubProcesses(owner: string) {
 	children[owner].forEach((c) => {
 		try {
 			if (c.pid) {
-				if (process.platform === 'win32') {
+				if (process.platform === "win32") {
 					execSync(`taskkill /pid ${c.pid} /T /F`);
 				} else {
 					process.kill(-c.pid);
 				}
 			}
-		} catch { 
+		} catch {
 			console.log(`couldn't kill task ${owner}`);
 		}
 	});
+
+	children[owner] = [];
 }
 
-process.on('exit', () => {
+process.on("exit", () => {
 	Object.keys(children).forEach((owner) => killSubProcesses(owner));
 });
 
 function gracefulExitHandler() {
 	process.exit();
 }
 
-process.on('SIGINT', gracefulExitHandler);
-process.on('SIGTERM', gracefulExitHandler);
-process.on('SIGQUIT', gracefulExitHandler);
+process.on("SIGINT", gracefulExitHandler);
+process.on("SIGTERM", gracefulExitHandler);
+process.on("SIGQUIT", gracefulExitHandler);
 
 export function subProcess(owner: string, command: string, options?: SpawnOptions) {
 	const childProcess = spawn(command, options);