change logging api to accept variadic properties

src/lib/guesser/base.ts

@@ -26,6 +26,10 @@ export class BaseGuesser implements Guessing {
 		}
 	}
 
+	declare_properties(): string[] {
+		return ["known".padStart(this.length)];
+	}
+
 	async guess(try_: (guess: string, known: string) => Awaitable<GuessResult>) {
 		const res = this.expected_result();
 		if (res.completed) return await try_(res.result, res.result);