import type { TEnv, TEnvData, TEnvSpecs } from './types';
/** Validates grouped server, client, and shared env specs with a client-side server access guard. */
export declare function createEnv<GServerSpecs extends Record<string, unknown> = TEmptyEnvSpecs, GClientSpecs extends Record<string, unknown> = TEmptyEnvSpecs, GSharedSpecs extends Record<string, unknown> = TEmptyEnvSpecs>(options: TCreateEnvOptions<GServerSpecs, GClientSpecs, GSharedSpecs>): TCreateEnvData<GServerSpecs, GClientSpecs, GSharedSpecs>;
export interface TCreateEnvOptions<GServerSpecs extends Record<string, unknown> = TEmptyEnvSpecs, GClientSpecs extends Record<string, unknown> = TEmptyEnvSpecs, GSharedSpecs extends Record<string, unknown> = TEmptyEnvSpecs> {
    /** Environment source, such as `process.env`, `import.meta.env`, or a test object. */
    env: TEnv;
    /** Server-only specs. Client access throws unless `onInvalidAccess` overrides it. */
    server?: TEnvSpecs<GServerSpecs>;
    /** Client-exposed specs validated on both server and client. */
    client?: TEnvSpecs<GClientSpecs>;
    /** Runtime-neutral specs shared by server and client code. */
    shared?: TEnvSpecs<GSharedSpecs>;
    /** Runtime side. Defaults to a global runtime check. */
    isServer?: boolean;
    /** Handles client-side reads of server-only keys. Must not return. */
    onInvalidAccess?: (key: string) => never;
}
export type TCreateEnvData<GServerSpecs extends Record<string, unknown> = TEmptyEnvSpecs, GClientSpecs extends Record<string, unknown> = TEmptyEnvSpecs, GSharedSpecs extends Record<string, unknown> = TEmptyEnvSpecs> = Readonly<TSimplify<TEnvData<GSharedSpecs> & TEnvData<GServerSpecs> & TEnvData<GClientSpecs>>>;
type TEmptyEnvSpecs = Record<never, never>;
type TSimplify<GValue> = {
    [Key in keyof GValue]: GValue[Key];
};
export {};
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