import { ConfigSettingsBuilderOptions } from './types';
import { ConfigSettingsArg, ConfigSettingsPath, EnvConfigSettings } from '../types';
export declare class ConfigSettingsBuilder<TSettings extends {} = {}> {
    get NODE_ENV(): string;
    static buildFromPaths: <T extends {} = {}>(rootPaths: string | string[], baseName: string, options?: ConfigSettingsBuilderOptions) => Promise<T>;
    static build: <T extends {} = {}>(args: ConfigSettingsPath | Partial<T> | EnvConfigSettings<T> | (() => import("../types").ConfigSettingsTypes<T>) | (() => Promise<import("../types").ConfigSettingsTypes<T>>) | ConfigSettingsArg<T>[], options?: ConfigSettingsBuilderOptions) => Promise<T>;
    private static buildOptions;
    private _rawArgs;
    private _normalizedArgs;
    private _options;
    private _settings;
    constructor(args: ConfigSettingsArg<TSettings> | Array<ConfigSettingsArg<TSettings>>, options?: ConfigSettingsBuilderOptions);
    build: () => Promise<TSettings>;
    private loadFromPathOptions;
    private normalizeArgs;
    private mergeEnvironmentOverrides;
    private merge;
}