fix: support concurrent game windows and prepare beta12 GitHub releases

apps/app-frontend/src/helpers/instance-launch-state.test.ts

@@ -0,0 +1,38 @@
+import assert from 'node:assert/strict'
+import { test } from 'node:test'
+import { isInstanceLaunching, launchOnce } from './instance-launch-state.ts'
+
+test('launches different instances concurrently and coalesces repeated pending clicks', async () => {
+	let finishA!: (value: string) => void
+	let starts = 0
+	const first = launchOnce('a', () => {
+		starts++
+		return new Promise<string>((resolve) => {
+			finishA = resolve
+		})
+	})
+	assert.equal(
+		launchOnce('a', async () => 'unexpected duplicate'),
+		first,
+	)
+	assert.equal(isInstanceLaunching('a'), true)
+	assert.equal(isInstanceLaunching('b'), false)
+	assert.equal(await launchOnce('b', async () => 'b started'), 'b started')
+	assert.equal(isInstanceLaunching('a'), true)
+	finishA('a started')
+	assert.equal(await first, 'a started')
+	assert.equal(starts, 1)
+	assert.equal(isInstanceLaunching('a'), false)
+	assert.equal(await launchOnce('a', async () => 'second window'), 'second window')
+})
+
+test('failed launch releases only its own pending state and can retry', async () => {
+	await assert.rejects(
+		launchOnce('failed', async () => {
+			throw new Error('launch failed')
+		}),
+		/launch failed/,
+	)
+	assert.equal(isInstanceLaunching('failed'), false)
+	assert.equal(await launchOnce('failed', async () => 'retry'), 'retry')
+})