import { LiffCore } from '../liff';
/**
 * Initializes a LIFF app.
 * You can only call other LIFF SDK methods after calling liff.init().
 * The LIFF SDK gets access tokens and ID tokens from the LINE platform
 * when you initialize the LIFF app.
 */
export default function init(this: LiffCore, config: {
    liffId: string;
}, successCallback?: () => void, errorCallback?: (error: Error) => void): Promise<void>;