import Event from '../events/Event';
import NativeEvent from '../events/NativeEvent';
/** @hidden */
export default class CrossPlatformNormalization {
    static eventNormalization: (event: NativeEvent) => Event;
    /**
     * NOTE: Copied from prestoplay-web
     */
    /**
     * Normalize a locale. This will take a locale and canonicalize it to a state
     * that we are prepared to work with.
     *
     * We only support with:
     *   - language
     *   - language-REGION
     *
     * If given a dialect, we will discard it. We will convert any 3-character
     * codes to 2-character codes. We will force language codes to lowercase and
     * region codes to uppercase.
     *
     * @param {string} locale
     * @return {string}
     *
     * @hidden
     */
    static normalizeLanguage(locale: string): string;
    /**
     * A map from 3-letter language codes (ISO 639-2) to 2-letter language codes
     * (ISO 639-1) for all languages which have both in the registry.
     *
     * @const {!Map<string, string>}
     * @private
     *
     * @hidden
     */
    static isoMap_: Map<string, string>;
}