import { QuestionSpecification } from "./exam_specification";
export declare class QuestionBank {
    readonly questions: readonly QuestionSpecification[];
    private readonly questionsById;
    private readonly questionsByTag;
    constructor(questions: readonly QuestionSpecification[]);
    registerQuestion(q: QuestionSpecification): void;
    registerQuestions(qs: readonly QuestionSpecification[]): void;
    getQuestionById(id: string): QuestionSpecification | undefined;
    getQuestionsByTag(tag: string): QuestionSpecification[];
}