import cheerio from "cheerio";
type Cheerio = ReturnType<typeof cheerio>;
type Element = Cheerio[number];
/**
 * The minimal component of a form to be posted to the school server.
 *
 * Nobody knows what `name` stands for, but it is certain that `value`
 * stands for the score of a question in some occasions.
 */
export declare class InputTag {
    private readonly name;
    value: string;
    constructor(input: Element | string, value?: string);
    toPair: () => [string, string];
    outOfRange: () => boolean;
}
/**
 * Corresponds to the questions on the teaching-evaluation form.
 *
 * **DO NOT** ask why it contains property `suggestion`. Foolish design
 * of the original website.
 */
export interface InputGroup {
    question: string;
    suggestion: InputTag;
    score: InputTag;
    others: InputTag[];
}
export declare class Overall {
    private suggestionTag;
    score: InputTag;
    constructor(suggestionTag: InputTag, score: InputTag);
    get suggestion(): string;
    set suggestion(text: string);
    toPairs(): [string, string][];
}
export declare class Person {
    name: string;
    inputGroups: InputGroup[];
    constructor(name: string, inputGroups: InputGroup[]);
    autoScore(score?: number): void;
    outOfRange: () => boolean;
    get suggestion(): string;
    set suggestion(text: string);
    toPairs(): [string, string][];
}
export declare class Form {
    private basics;
    overall: Overall;
    teachers: Person[];
    assistants: Person[];
    constructor(basics: InputTag[], overall: Overall, teachers: Person[], assistants: Person[]);
    /**
     * Check whether this form is valid to post.
     *
     * Returns a reason as a `string` if invalid, or `undefined` if else.
     */
    invalid: () => "overallOutOfRange" | "teachersOutOfRange" | "assistantsOutOfRange" | "exceptionOccurred" | undefined;
    /**
     * The form has to be serialized in order to be posted.
     */
    serialize: () => any;
}
/**
 * Read persons data from their corresponding html tables.
 */
export declare const toPersons: (tables: Cheerio) => Person[];
export {};