export declare type PinFieldValidator = string | string[] | RegExp | ((key: string) => boolean);
export declare type PinFieldFormatter = (key: string) => string;
export declare class PinField extends HTMLElement {
    /**
     * Current input focus cursor.
     */
    private cursor;
    /**
     * Actions stack.
     */
    private actions;
    /**
     * Effects stack.
     */
    private effects;
    /**
     * State-holder fallback for old browsers and mobile support.
     */
    private fallback;
    /**
     * Wrapper around the validator (for internal use).
     */
    private isKeyAllowed;
    /**
     * Logger.
     */
    private log;
    /**
     * List of HTMLInputElement the PIN Field is composed of.
     */
    inputs: HTMLInputElement[];
    /**
     * Length of the field.
     */
    length: number;
    /**
     * Validator.
     */
    validate: PinFieldValidator;
    /**
     * Formatter.
     */
    format: PinFieldFormatter;
    /**
     * Debug getter.
     */
    get debug(): boolean;
    /**
     * Debug setter.
     */
    set debug(val: boolean);
    /**
     * Disabled getter.
     */
    get disabled(): boolean;
    /**
     * Disabled setter.
     */
    set disabled(val: boolean);
    /**
     * List of observed attributes.
     */
    static get observedAttributes(): string[];
    /**
     * Attribute changed callback.
     */
    protected attributeChangedCallback(name: string, prevVal: string | null, nextVal: string | null): void;
    /**
     * Connected callback.
     */
    connectedCallback(): void;
    /**
     * Disconnected callback.
     */
    disconnectedCallback(): void;
    /**
     * Set a value starting from a specific index using the effects stack.
     */
    private applySetValAt;
    /**
     * Execute all actions present in the stack.
     * An action should mutate internal state and generate effects.
     */
    private executeAll;
    /**
     * Apply all effects present in the stack.
     * An effect is an action with side-effects.
     */
    private applyAll;
    /**
     * Execute all actions, then apply all effects.
     */
    private render;
    /**
     * Wrapper around key down event handler.
     */
    private handleKeyDown;
    /**
     * Wrapper around key up event handler.
     */
    private handleKeyUp;
    /**
     * Wrapper around paste event handler.
     */
    private handlePaste;
}
export default PinField;