import type { ConfigResult, File, FilePath } from '@atlaspack/types-internal';
import type { FileSystem } from '@atlaspack/types-internal';
export type ConfigOutput = {
    config: ConfigResult;
    files: Array<File>;
};
export type ConfigOptions = {
    parse?: boolean;
    parser?: (arg1: string) => any;
};
export declare function resolveConfig(fs: FileSystem, filepath: FilePath, filenames: Array<FilePath>, projectRoot: FilePath): Promise<FilePath | null | undefined>;
export declare function resolveConfigSync(fs: FileSystem, filepath: FilePath, filenames: Array<FilePath>, projectRoot: FilePath): FilePath | null | undefined;
export declare function loadConfig(fs: FileSystem, filepath: FilePath, filenames: Array<FilePath>, projectRoot: FilePath, opts?: ConfigOptions | null): Promise<ConfigOutput | null>;
export declare namespace loadConfig {
    var clear: () => void;
}
export declare function readConfig(fs: FileSystem, configFile: FilePath, opts?: ConfigOptions | null): Promise<ConfigOutput | null>;