chore(tests): demo example of Issue#48

README.md

@@ -299,6 +299,10 @@ class MyResource extends LifecycleResource<Named<{ bananas: number }>> {
 }
 ```
 
+These shorthands are 3 characters sharter than using the `named:` or
+`positional: ` keys that would be required if not using these shorthands...
+
+
 ## Testing
 
 If your resources are consumed by components, you'll want to continue to

tests/unit/use-resource-test.ts

@@ -17,7 +17,7 @@ module('useResource', function () {
       setupTest(hooks);
 
       test('it works', async function (assert) {
-        class Doubler extends LifecycleResource<{ positional: [number] }> {
+        class Doubler extends LifecycleResource<Positional<[number]>> {
           @tracked num = 0;
 
           setup() {
@@ -49,6 +49,34 @@ module('useResource', function () {
         assert.equal(foo.data.num, 8);
       });
 
+      test('can take a typed array https://github.com/NullVoxPopuli/ember-resources/issues/48', async function (assert) {
+        class DoubleEverything extends LifecycleResource<Positional<number[]>> {
+          @tracked result: number[] = [];
+
+          setup() {
+            this.update();
+          }
+
+          update() {
+            this.result = this.args.positional.map((num) => num * 2);
+          }
+        }
+        class Test {
+          @tracked numbers = [0, 1, 2, 3];
+
+          data = useResource(this, DoubleEverything, () => [...this.numbers]);
+        }
+
+        let foo = new Test();
+
+        await settled();
+        assert.deepEqual(foo.data.result, [0, 2, 4, 6]);
+
+        foo.numbers = [2, 6, 2, 7];
+        await settled();
+        assert.deepEqual(foo.data.result, [4, 12, 4, 14]);
+      });
+
       test('lifecycle', async function (assert) {
         class Doubler extends LifecycleResource<{ positional: [number] }> {
           @tracked num = 0;