import { FakeClock } from "../runtime/clock.js";
import type { LogLevel } from "../logger.js";
import { type Capability, type Host, type HostNetwork, type HostSubprocess, type MakeHostArgs, type OperatingSystem } from "./host.js";
/** What a memory host holds and records. A test reads these after a run. */
export type MemoryHostState = {
    /** Every file, keyed by its absolute path with `/` separators. */
    files: Record<string, Uint8Array>;
    /** Every directory that exists, keyed the same way. */
    dirs: Record<string, true>;
    /** What `terminal.print`, `writeOut`, and `writeErr` were given, in order. */
    output: string[];
    /** Lines `readLine` hands out, in order. Empty when the test gave none. */
    inputLines: string[];
    /** What `settings.log` was given. */
    logged: {
        level: LogLevel;
        text: string;
    }[];
    /** The variables `settings.read` and `env.get` answer from. */
    variables: Record<string, string>;
    clock: FakeClock;
};
export type MemoryHostOptions = {
    /** Defaults to every capability. */
    capabilities?: Capability[];
    /** Files to start with, by absolute path. Text is stored as UTF-8. */
    files?: Record<string, string | Uint8Array>;
    /** The variables `settings.read` and `env.get` answer from. */
    variables?: Record<string, string>;
    /** Lines `readLine` hands out. */
    inputLines?: string[];
    /** What `network.fetch` answers with. Without one, every request is
     *  refused with an error that names the URL. */
    fetch?: HostNetwork["fetch"];
    /** What runs commands. Without one, every command is refused with an
     *  error that names the program. */
    subprocess?: HostSubprocess;
    cwd?: string;
    homeDir?: string;
    /** What `system.installDir` answers; null without. */
    installDir?: string;
    operatingSystem?: OperatingSystem;
    clock?: FakeClock;
    onUse?: MakeHostArgs["onUse"];
    onCallable?: MakeHostArgs["onCallable"];
};
export type MemoryHost = Host & {
    state: MemoryHostState;
};
export declare function memoryHost(options?: MemoryHostOptions): MemoryHost;