import { OptionsMetadata } from '../../';
/**
 * Slack notifier class.
 */
export declare class SlackNotifier {
    /**
     * Slack options defined in app options.
     */
    private slackOptions;
    constructor(optionsMetadata: OptionsMetadata);
    /**
     * Slack channel notification pusher.
     * @param message
     * @param pretext
     * @param messageType
     */
    notify: (message: string, pretext?: string, messageType?: string) => void;
    /**
     * Color picker for Slack messages based on message type.
     * @param messageType
     * @returns {any}
     */
    private getMessageColor;
}