fix: use per-promise start index when registering guard dynamic import routes

Author: MarcelOlsen

src/index.ts

@@ -4687,7 +4687,7 @@ export default class Elysia<
 
 		// Handle dynamic imports (Promises) used inside guard callback
 		if (instance.promisedModules.size > 0) {
-			const syncCount = instance.router.history.length
+			let processedUntil = instance.router.history.length
 
 			for (const promise of instance.promisedModules.promises) {
 				this.promisedModules.add(
@@ -4705,8 +4705,11 @@ export default class Elysia<
 						const hasStandaloneSchema =
 							body || headers || query || params || cookie || response
 
+						const startIndex = processedUntil
+						processedUntil = instance.router.history.length
+
 						for (
-							let i = syncCount;
+							let i = startIndex;
 							i < instance.router.history.length;
 							i++
 						) {

test/core/modules.test.ts

@@ -263,6 +263,24 @@ describe('Modules', () => {
 		expect(await res.text()).toBe('lazy-instance')
 	})
 
+	it('register multiple dynamic import routes inside guard', async () => {
+		const lazyA = Promise.resolve(new Elysia().get('/a', () => 'a'))
+		const lazyB = Promise.resolve(new Elysia().get('/b', () => 'b'))
+
+		let hookCalls = 0
+
+		const app = new Elysia().guard(
+			{ beforeHandle: () => { hookCalls++ } },
+			(app) => app.use(lazyA).use(lazyB)
+		)
+
+		await app.modules
+
+		expect((await app.handle(req('/a'))).status).toBe(200)
+		expect((await app.handle(req('/b'))).status).toBe(200)
+		expect(hookCalls).toBe(2)
+	})
+
 	it('register dynamic import routes inside guard with hook', async () => {
 		let called = false