diff --git a/src/utils/flatMap.spec.ts b/src/utils/flatMap.spec.ts
deleted file mode 100644
index 4cd2c7a54..000000000
--- a/src/utils/flatMap.spec.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { flatMap } from './flatMap';
-
-describe('flatMap', () => {
-    it('should produce correct result', () => {
-        expect(flatMap([1, 2, 3], i => [i])).toEqual([1, 2, 3]);
-        expect(flatMap([1, 2, 3], i => [i + 1])).toEqual([2, 3, 4]);
-        expect(flatMap([1, 2, 3], () => [1])).toEqual([1, 1, 1]);
-    });
-});
diff --git a/src/utils/flatMap.ts b/src/utils/flatMap.ts
deleted file mode 100644
index 7dbcb3150..000000000
--- a/src/utils/flatMap.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * Calls a defined callback on each element of an array.
- * Then, flattens the result into a new array.
- */
-export const flatMap = <U, T>(array: T[], callback: (value: T, index: number, array: T[]) => U[]): U[] => {
-    const result: U[] = [];
-    array.map<U[]>(callback).forEach(arr => {
-        result.push(...arr);
-    });
-    return result;
-};
diff --git a/src/utils/postProcessServiceOperations.ts b/src/utils/postProcessServiceOperations.ts
index 5b88a5b21..fcbf524a8 100644
--- a/src/utils/postProcessServiceOperations.ts
+++ b/src/utils/postProcessServiceOperations.ts
@@ -1,6 +1,5 @@
 import type { Operation } from '../client/interfaces/Operation';
 import type { Service } from '../client/interfaces/Service';
-import { flatMap } from './flatMap';
 
 export const postProcessServiceOperations = (service: Service): Operation[] => {
     const names = new Map<string, number>();
@@ -10,8 +9,8 @@ export const postProcessServiceOperations = (service: Service): Operation[] => {
 
         // Parse the service parameters and results, very similar to how we parse
         // properties of models. These methods will extend the type if needed.
-        clone.imports.push(...flatMap(clone.parameters, parameter => parameter.imports));
-        clone.imports.push(...flatMap(clone.results, result => result.imports));
+        clone.imports.push(...clone.parameters.flatMap(parameter => parameter.imports));
+        clone.imports.push(...clone.results.flatMap(result => result.imports));
 
         // Check if the operation name is unique, if not then prefix this with a number
         const name = clone.name;