import { Workspace } from '../workspace.ts';
export type BackendKind = 'ram' | 'disk';
export interface NativeEnv {
    kind: BackendKind;
    ws: Workspace;
    native(cmd: string, stdin?: Uint8Array | null): Promise<string>;
    mirage(cmd: string, stdin?: Uint8Array | null): Promise<string>;
    createFile(relativePath: string, content: Uint8Array): void;
    cleanup(): Promise<void>;
}
export declare const NATIVE_BACKENDS: readonly BackendKind[];
export declare function makeEnv(kind: BackendKind): NativeEnv;
export interface CrossEnv {
    kinds: readonly [BackendKind, BackendKind];
    ws: Workspace;
    createFile(mountIdx: 1 | 2, relativePath: string, content: Uint8Array): void;
    run(cmd: string): Promise<string>;
    exit(cmd: string): Promise<number>;
    stderr(cmd: string): Promise<string>;
    provision(cmd: string): Promise<unknown>;
    cleanup(): Promise<void>;
}
export declare function makeCrossEnv(kinds: readonly [BackendKind, BackendKind]): CrossEnv;
export declare const CROSS_MOUNT_PAIRS: readonly (readonly [BackendKind, BackendKind])[];
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