fix(types): useResource types now reflect that you *can* make non-rea…

addon/-private/types.ts

@@ -37,6 +37,9 @@ export interface Helper {
 }
 
 export type Thunk =
+  // No Args
+  | (() => [])
+  | (() => void)
   // plain array / positional args
   | (() => Required<ArgsWrapper>['positional'])
   // plain named args

tests/unit/types-test.ts

@@ -1,6 +1,6 @@
 /* eslint-disable no-console */
 /* eslint-disable @typescript-eslint/no-explicit-any */
-import { LifecycleResource, Resource } from 'ember-resources';
+import { LifecycleResource, Resource, useResource } from 'ember-resources';
 
 import type { Named } from 'ember-resources';
 
@@ -22,3 +22,14 @@ export function Issue108TypeTest() {
 
   return issue108p2a.args.named?.foo;
 }
+
+// https://github.com/NullVoxPopuli/ember-resources/issues/48
+export function Issue48TypeTest(): unknown {
+  class TestResource extends Resource {}
+
+  return class TestCaseComponent {
+    test = useResource(this, TestResource, () => {});
+    testArray = useResource(this, TestResource, () => []);
+    testVoid = useResource(this, TestResource);
+  };
+}

tests/unit/use-resource-test.ts

@@ -147,6 +147,24 @@ module('useResource', function () {
       });
     });
 
+    test('does not need args', async function (assert) {
+      class TestResource extends Resource {
+        foo = 3;
+      }
+
+      class Test {
+        dataArray = useResource(this, TestResource, () => []);
+        dataVoid = useResource(this, TestResource, () => {});
+        dataOmitted = useResource(this, TestResource);
+      }
+
+      let foo = new Test();
+
+      assert.equal(foo.dataArray.foo, 3);
+      assert.equal(foo.dataVoid.foo, 3);
+      assert.equal(foo.dataOmitted.foo, 3);
+    });
+
     module('in templates', function (hooks) {
       setupRenderingTest(hooks);