fix(MongoInstance): closeHandler: also log the exit signal

Author: hasezoey

packages/mongodb-memory-server-core/src/util/MongoInstance.ts

@@ -443,16 +443,16 @@ export class MongoInstance extends EventEmitter implements ManagerBase {
    * @param code The Exit code to handle
    * @fires MongoInstance#instanceClosed
    */
-  closeHandler(code: number): void {
+  closeHandler(code: number, signal: string): void {
     // check if the platform is windows, if yes check if the code is not "12" or "0" otherwise just check code is not "0"
     // because for mongodb any event on windows (like SIGINT / SIGTERM) will result in an code 12
     // https://docs.mongodb.com/manual/reference/exit-codes/#12
     if ((process.platform === 'win32' && code != 12 && code != 0) || code != 0) {
       this.debug('closeHandler: Mongod instance closed with an non-0 (or non 12 on windows) code!');
     }
 
-    this.debug(`closeHandler: ${code}`);
-    this.emit(MongoInstanceEvents.instanceClosed, code);
+    this.debug(`closeHandler: "${code}" "${signal}"`);
+    this.emit(MongoInstanceEvents.instanceClosed, code, signal);
   }
 
   /**

packages/mongodb-memory-server-core/src/util/utils.ts

@@ -72,7 +72,7 @@ export function assertion(cond: unknown, error?: Error): asserts cond {
 export async function killProcess(
   childprocess: ChildProcess,
   name: string,
-  mongodPort: number | undefined
+  mongodPort?: number
 ): Promise<void> {
   function ilog(msg: string) {
     log(`Mongo[${mongodPort || 'unknown'}] killProcess: ${msg}`);