fix(MongoMemoryServer): resolve nodejs warning "DEP0147"

Author: hasezoey

packages/mongodb-memory-server-core/src/MongoMemoryServer.ts

@@ -539,16 +539,22 @@ export class MongoMemoryServer extends EventEmitter implements ManagerAdvanced {
       } else {
         assertion(res.isDirectory(), new Error('Defined dbPath is not an directory'));
 
+        // exclusive semver versions are used here (yes "lt" not "lte")
         if (lt(process.version, '12.10.0')) {
+          // this has to be used for below 12.10 (exclusive), because nodejs did not have an recursive delete
           try {
             const rimraf = (await import('rimraf')).sync;
             rimraf(dbPath);
           } catch (err) {
             console.warn('When using NodeJS below 12.10 package "rimraf" is needed');
             throw err;
           }
-        } else {
+        } else if (lt(process.version, '14.14.0')) {
+          // this has to be used for 12.10 - 14.13 (inclusive) because ".rm" did not exist yet
           await fspromises.rmdir(dbPath, { recursive: true, maxRetries: 1 });
+        } else {
+          // this has to be used for 14.14+ (inclusive) because ".rmdir" and "recursive" got deprecated (DEP0147)
+          await fspromises.rm(dbPath, { recursive: true, maxRetries: 1 });
         }
       }
     }

packages/mongodb-memory-server-core/src/__tests__/MongoMemoryServer.test.ts

@@ -502,7 +502,7 @@ describe('MongoMemoryServer', () => {
       await mongoServer.stop(false);
       await mongoServer.cleanup(true);
       expect(utils.statPath).toHaveBeenCalledTimes(1);
-      expect(semver.lt).toHaveBeenCalledTimes(1);
+      expect(semver.lt).toHaveBeenCalled(); // not testing on how many, because it would change with nodejs version
       expect(await utils.statPath(dbPath)).toBeUndefined();
       expect(mongoServer.state).toEqual(MongoMemoryServerStates.new);
       expect(mongoServer.instanceInfo).toBeUndefined();