export interface Option {
    /**
     * Max time duration (in ms) between consecutive inputs
     * @default 50
     */
    latency?: number;
    /**
     * Min length of a valid barcode
     * @default 3
     */
    minLength?: number;
    /**
     * The HTML element to attach the event listener to
     * @default document
     */
    element?: HTMLElement;
    /**
     * Array of keys indicating end of barcode
     * @default ["Enter"]
     * Refer {@link https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values Key Values | MDN}
     */
    endKeys?: Array<string>;
    /**
     * Regular expression to check for a valid key in barcode
     * @default /^\w$/
     * Refer {@link https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values Key Values | MDN}
     */
    validKey?: RegExp;
}
export interface HandlerFunction {
    /**
     * @param code Scanned barcode
     * @param event Keyboard event from the end key
     */
    (code: string, event: KeyboardEvent): void;
}
export interface Scanner {
    /**
     * Starts listening for barcode scans and add/replace the listener
     *
     * @param {Function} handler Function to call on completion of barcode scan
     */
    on: (handler: HandlerFunction) => void;
    /**
     * Stop listening for barcode scans and remove the listener
     */
    off: () => void;
}
/**
 * Simple JavaScript utility to listen for barcode scanners emulating keyboard
 */
export default function useBarcodeScanner(options?: Option): Scanner;