fix: recursively simplify returned objects

nitrojs · Oct 21, 2023 · c744ffa · c744ffa
1 parent 3611071
commit c744ffa
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/src/types/serialize.ts b/src/types/serialize.ts
@@ -53,4 +53,4 @@ type SerializeObject<T extends object> = {
  */
 export type Simplify<TType> = TType extends any[] | Date
   ? TType
-  : { [K in keyof TType]: TType[K] };
+  : { [K in keyof TType]: Simplify<TType[K]> };
diff --git a/test/fixture/types.ts b/test/fixture/types.ts
@@ -3,6 +3,7 @@ import { describe, it } from "vitest";
 import { EventHandler, EventHandlerRequest, defineEventHandler } from "h3";
 import { $Fetch } from "../..";
 import { defineNitroConfig } from "../../src/config";
+import { Serialize, Simplify } from "../../src/types"
 
 interface TestResponse {
   message: string;
@@ -307,3 +308,17 @@ describe("defineCachedEventHandler", () => {
     >();
   });
 });
+
+describe('type helpers', () => {
+  it('Serialize', () => {
+    expectTypeOf<Serialize<{ test: Date }>>().toEqualTypeOf<{ test: string }>()
+    expectTypeOf<Serialize<{ test: Map<string, string> }>>().toEqualTypeOf<{ test: Record<string, never> }>()
+    expectTypeOf<Serialize<{ nested: { test: Map<string, string> } }>>().toEqualTypeOf<{ nested: { test: Record<string, never> } }>()
+  })
+
+  it('Simplify', () => {
+    expectTypeOf<Simplify<Serialize<{ test: Date }>>>().toEqualTypeOf<{ test: string }>()
+    expectTypeOf<Simplify<Serialize<{ test: Map<string, string> }>>>().toEqualTypeOf<{ test: Record<string, never> }>()
+    expectTypeOf<Simplify<Serialize<{ nested: { test: Map<string, string> } }>>>().toEqualTypeOf<{ nested: { test: Record<string, never> } }>()
+  })
+})