import type * as webpack from 'webpack';
import type { ITerminal } from '@rushstack/terminal';
import type { IConfigJson } from '../../spfxConfig/interfaces/config-v2';
/**
 * @internal
 */
export interface ILegacyLocalizationOptions {
    configJson: IConfigJson;
    terminal: ITerminal;
    selectedLocales: ReadonlyArray<string> | undefined;
    buildFolder: string;
    serveMode: boolean;
    production: boolean;
    hashSalt?: string | undefined;
}
/**
 * @internal
 */
export declare class LegacyExternals {
    private readonly _configJson;
    private readonly _terminal;
    private readonly _buildFolder;
    private readonly _serveMode;
    private readonly _production;
    private readonly _selectedLocales;
    private readonly _hashSalt;
    private _discoveredLocalizedResources;
    private _legacyExternalsByName;
    constructor(options: ILegacyLocalizationOptions);
    updateWebpackConfiguration(webpackConfiguration: webpack.Configuration): void;
    private _ensureLocalizedResourcesAsync;
    private _collectResourcesForKeyAsync;
    private _tryGetLegacyExternalsByNameAsync;
}
//# sourceMappingURL=LegacyExternals.d.ts.map