import type { Browser } from './types';
/** Canonical list of browsers covered by MDN WebExtensions compat data. */
export declare const BROWSERS: readonly Browser[];
export declare function isKnownBrowser(value: string): value is Browser;
/**
 * Resolve a user-supplied browser string to a canonical {@link Browser},
 * accepting a few common aliases. Throws on anything unrecognized so a typo
 * can never silently pass validation.
 */
export declare function assertBrowser(value: string): Browser;