Migrate frontend to TypeScript with Deno-based tooling (#206)

Compiles assets/*.ts via sensiolabs/typescript-bundle (standalone SWC binary) and adds Deno for formatting, linting, type-checking, and tests, keeping the project's no-Node/npm approach intact. Wires all four into CI, the Justfile, and the pre-commit hook.
2026-07-12 21:05:19 +02:00 · 2026-07-12 19:08:21 +02:00
parent 8382900b9e
commit a4f8340b04
40 changed files with 1391 additions and 498 deletions
@@ -0,0 +1,114 @@
+import { assertEquals } from '@std/assert';
+
+// Stimulus's Controller base class constructor only does `this.context = context`,
+// and target getters are normally installed by Application.register — since we
+// construct the controller directly (no real Stimulus app), collectionTarget/element
+// are assigned here as plain writable properties, backed by a minimal fake DOM
+// container that supports the one operation these methods actually rely on:
+// appendChild() moving an existing child to the end (real DOM semantics).
+class FakeInput {
+    value: string;
+    constructor(value = '') {
+        this.value = value;
+    }
+}
+
+class FakeItem {
+    textInput: FakeInput;
+    orderingInput = new FakeInput();
+
+    constructor(text: string) {
+        this.textInput = new FakeInput(text);
+    }
+
+    querySelector<T>(selector: string): T | null {
+        if (selector.includes('type="text"')) {
+            return this.textInput as unknown as T;
+        }
+        if (selector.includes('ordering')) {
+            return this.orderingInput as unknown as T;
+        }
+        return null;
+    }
+}
+
+class FakeCollection {
+    children: FakeItem[] = [];
+
+    appendChild(item: FakeItem) {
+        const idx = this.children.indexOf(item);
+        if (idx !== -1) this.children.splice(idx, 1);
+        this.children.push(item);
+    }
+}
+
+const { default: FormCollectionController } = await import(
+    './form_collection_controller.ts'
+);
+
+// deno-lint-ignore no-explicit-any
+function makeController(items: FakeItem[]): any {
+    const collectionTarget = new FakeCollection();
+    collectionTarget.children = items;
+    // `element` is a read-only getter on Controller (delegates to `this.scope.element`),
+    // so the fake element is supplied via the constructor context rather than assigned.
+    const controller = new FormCollectionController({
+        scope: { element: { dispatchEvent: () => true } },
+    } as never);
+    return Object.assign(controller, { collectionTarget });
+}
+
+Deno.test("_syncOrdering writes the current index into each item's ordering input", () => {
+    const items = [new FakeItem('c'), new FakeItem('a'), new FakeItem('b')];
+    const controller = makeController(items);
+
+    controller._syncOrdering();
+
+    assertEquals(items.map((i) => i.orderingInput.value), ['0', '1', '2']);
+});
+
+Deno.test('sortAlphabetically reorders items by their text input value, case-insensitively', () => {
+    const c = new FakeItem('Charlie');
+    const a = new FakeItem('alice');
+    const b = new FakeItem('Bob');
+    const controller = makeController([c, a, b]);
+
+    controller.sortAlphabetically();
+
+    assertEquals(
+        controller.collectionTarget.children.map((i: FakeItem) =>
+            i.textInput.value
+        ),
+        ['alice', 'Bob', 'Charlie'],
+    );
+    // _syncOrdering must run after the reorder, against the new order
+    assertEquals(
+        controller.collectionTarget.children.map((i: FakeItem) =>
+            i.orderingInput.value
+        ),
+        ['0', '1', '2'],
+    );
+});
+
+Deno.test('randomize keeps the same set of items and resyncs ordering', () => {
+    const items = [
+        new FakeItem('1'),
+        new FakeItem('2'),
+        new FakeItem('3'),
+        new FakeItem('4'),
+    ];
+    const controller = makeController([...items]);
+
+    controller.randomize();
+
+    const resultValues = controller.collectionTarget.children.map((
+        i: FakeItem,
+    ) => i.textInput.value);
+    assertEquals(resultValues.slice().sort(), ['1', '2', '3', '4']);
+    assertEquals(
+        controller.collectionTarget.children.map((i: FakeItem) =>
+            i.orderingInput.value
+        ),
+        ['0', '1', '2', '3'],
+    );
+});