/**
 * @license
 * Copyright (C) 2016 Chi Vinh Le and contributors.
 *
 * This software may be modified and distributed under the terms
 * of the MIT license. See the LICENSE file for details.
 */
import { Browser } from "./browser";
export interface Support {
    level: "unknown" | "none" | "partial" | "full";
    needPrefix: boolean;
    notes: number[];
}
/**
 * Query the caniuse database for feature support.
 *
 * @param {String} feature see full list https://github.com/Fyrd/caniuse/tree/master/features-json.
 * @param {{id: string; version: string}} browser
 */
export declare function getSupport(feature: string, browser: Browser): Support;
/**
 * Get matching browser version index of the caniuse db.
 * Will return last known version index if target version > any known versions.
 * Returns an empty string if target version < any known versions.
 *
 * @param {{id: string; version: string}} browser
 */
export declare function getVersionIndex(browser: Browser): string;