Merge branch 'main' of github.com:nakasyou/line.js into refactor/pack…

…ages

deno.json

@@ -16,7 +16,7 @@
 		"tweetnacl": "npm:tweetnacl@^1.0.3"
 	},
 	"tasks": {
-		"format": "deno fmt & deno run -A npm:@biomejs/biome format --write ./packages/**/*.ts",
+		"format": "deno run -A npm:@biomejs/biome format --write ./packages/**/*.ts",
 		"lint": "deno run -A npm:@biomejs/biome lint ./packages/**/*.ts",
 		"check": "deno run -A npm:@biomejs/biome check ./packages/**/*.ts"
 	}

packages/linejs/client/libs/typed-event-emitter/index.test.ts

@@ -0,0 +1,18 @@
+import { assertEquals } from "@std/assert";
+import { TypedEventEmitter } from "./index.ts";
+
+Deno.test("promise() should be vaild", async () => {
+	type Events = {
+		example: (v: number) => void;
+	};
+	class Client extends TypedEventEmitter<Events> {}
+	const client = new Client();
+
+	const promise = client.waitFor("example");
+
+	client.emit("example", 123456);
+
+	const [v] = await promise;
+
+	assertEquals(v, 123456);
+});

packages/linejs/client/libs/typed-event-emitter/index.ts

@@ -41,4 +41,20 @@ export class TypedEventEmitter<
 
 		return this;
 	}
+
+	/**
+	 * This creates a promise that you can use for a single event.
+	 * @param event A event name
+	 */
+	public waitFor<E2 extends E, P = Parameters<T[E2]>>(
+		event: E2,
+	): Promise<P> {
+		return new Promise<P>((resolve) => {
+			const listener = ((...args) => {
+				this.off(event, listener);
+				resolve(args as P);
+			}) as T[E2];
+			this.on(event, listener);
+		});
+	}
 }