export interface ZBarOptions {
    /**
     * A string representing the title text (Android only).
     * Default: "Scan QR Code"
     */
    text_title?: string;
    /**
     * A string representing the instruction text (Android only).
     * Default: "Please point your camera at the QR code."
     */
    text_instructions?: string;
    /**
     * A string defining the active camera when opening the scanner.
     * Possible values: "front", "back"
     * Default: "back"
     */
    camera?: string;
    /**
     * A string defining the state of the flash.
     * Possible values: "on", "off", "auto"
     * Default: "auto"
     */
    flash?: string;
    /**
     * A boolean to show or hide a line in the center of the scanner.
     * Default: true
     */
    drawSight?: boolean;
}
/**
 * @name ZBar
 * @description
 * The ZBar Scanner Plugin allows you to scan 2d barcodes.
 *
 * Requires Cordova plugin: `cordova-plugin-cszbar`. For more info, please see the [zBar plugin docs](https://github.com/tjwoon/csZBar).
 *
 * @usage
 * ```
 * import { ZBar } from 'ionic-native';
 *
 * let zBarOptions = {
 *       flash: "off",
 *       drawSight: false
 *     };
 *
 * ZBar.scan(zBarOptions)
 *    .then(result => {
 *       console.log(result); // Scanned code
 *    })
 *    .catch(error => {
 *       console.log(error); // Error message
 *    });
 *
 * ```
 *
 * @interfaces
 * ZBarOptions
 */
export declare class ZBar {
    /**
     * Open the scanner
     * @param options { ZBarOptions } Scan options
     * @returns {Promise<any>} Returns a Promise that resolves with the scanned string, or rejects with an error.
     */
    static scan(options: ZBarOptions): Promise<any>;
}