import { Result } from "./result.js";
import { KeysParam } from "./utils/get-params-result.js";
import { WithCement } from "./types.js";
export type EnvTuple = ([string, string] | [string, string][] | Record<string, string> | Iterator<[string, string]>)[];
export interface EnvMap {
    get(key: string): string | undefined;
    set(key: string, value?: string): void;
    delete(key: string): void;
    keys(): string[];
}
export interface EnvActions extends EnvMap {
    active(): boolean;
    register(env: Env): Env;
}
export interface EnvFactoryOpts {
    readonly symbol: string;
    readonly presetEnv: Map<string, string>;
    testPatchImportMetaEnv?: Record<string, string>;
    readonly id: string;
}
type OnSetFn = (key: string, value?: string) => void;
export interface OnSetItem {
    readonly filter: Set<string>;
    readonly fn: OnSetFn;
}
export interface Env extends EnvMap {
    onSet(fn: OnSetFn, ...filter: string[]): void;
    gets(...kparams: KeysParam): Result<Record<string, string>>;
    sets(...keys: EnvTuple): void;
}
export type EnvFactoryFn = (opts: WithCement<Partial<EnvFactoryOpts>>) => EnvActions;
export declare function registerEnvAction(fn: EnvFactoryFn): () => void;
export type EnvFactory = (opts?: Partial<EnvFactoryOpts>) => Env;
export declare function envFactory(opts?: Partial<EnvFactoryOpts>): Env;
export declare class EnvImpl implements Env {
    readonly _map: EnvMap;
    constructor(map: EnvMap, opts: Partial<EnvFactoryOpts>);
    gets(...kparams: KeysParam): Result<Record<string, string>>;
    sets(...keys: EnvTuple): void;
    _updatePresets(presetEnv?: Map<string, string>): void;
    _applyOnSet(onSet: OnSetItem[], key?: string, value?: string): void;
    readonly _onSet: OnSetItem[];
    keys(): string[];
    onSet(fn: OnSetFn, ...filter: string[]): void;
    get(key: string): string | undefined;
    set(key: string, value?: string): void;
    delete(key: string): void;
}
export {};
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