fix: describe.each type error (#707)

Co-authored-by: Copilot <[email protected]>

Author: 9aoy

e2e/describe/each.test.ts

@@ -3,7 +3,7 @@ import { afterAll, describe, expect, it } from '@rstest/core';
 const logs: string[] = [];
 
 afterAll(() => {
-  expect(logs.length).toBe(6);
+  expect(logs.length).toBe(7);
 });
 
 describe.each([
@@ -27,3 +27,21 @@ describe.each([
     logs.push('executed');
   });
 });
+interface TestCase {
+  name: string;
+  targets: string[];
+}
+
+const TEST_CASES: TestCase[] = [
+  {
+    name: 'react-16',
+    targets: ['node'],
+  },
+];
+
+describe.each(TEST_CASES)('test case $name', ({ name, targets }) => {
+  it(`should run ${name}`, () => {
+    expect(targets).toBeDefined();
+    logs.push('executed');
+  });
+});

packages/core/src/types/api.ts

@@ -65,6 +65,9 @@ export interface DescribeEachFn {
   <T extends readonly [unknown, ...unknown[]]>(
     cases: readonly T[],
   ): (description: string, fn: (...args: [...T]) => MaybePromise<void>) => void;
+  <T>(
+    cases: readonly T[],
+  ): (description: string, fn: (param: T) => MaybePromise<void>) => void;
 }
 
 export type DescribeForFn = <T>(