Clean up

src/functions/flatMap.ts

@@ -1,13 +1,11 @@
-import { Transform } from "stream";
-import { TransformOptions } from "./baseDefinitions";
+import { Transform, TransformOptions } from "stream";
 
 export function flatMap<T, R>(
     mapper:
         | ((chunk: T, encoding: string) => R[])
         | ((chunk: T, encoding: string) => Promise<R[]>),
     options: TransformOptions = {
-        readableObjectMode: true,
-        writableObjectMode: true,
+        objectMode: true,
     },
 ): Transform {
     return new Transform({