test(client): e2e type checks

packages/client/tests/e2e.test-d.ts

@@ -0,0 +1,29 @@
+import { client } from './helpers'
+
+describe('e2e', () => {
+  it('infer input', () => {
+    client.user.find({ id: '123' })
+    // @ts-expect-error - invalid input
+    client.user.find({ id: 123 })
+
+    client.ping()
+    client.ping('any_thing')
+
+    client.nested.countFileSize({} as Blob)
+    client.nested.countFileSize({} as File)
+    // @ts-expect-error - invalid input
+    client.nested.countFileSize({})
+  })
+
+  it('infer output', () => {
+    expectTypeOf(client.ping()).toEqualTypeOf<Promise<string>>()
+    expectTypeOf(client.user.find({ id: '123' })).toEqualTypeOf<Promise<{ id: string, name: string }>>()
+  })
+
+  it('works on error', () => {
+    // @ts-expect-error - invalid input
+    expect(client.user.find()).rejects.toThrowError(
+      'Validation input failed',
+    )
+  })
+})