import type { Writable } from 'node:stream';
/**
 * Marks a run made on a delegating caller's behalf, where a command the registry does not define exits 0
 * rather than failing.
 */
export declare const RUN_IF_PRESENT_ENV_VAR = "NMR_RUN_IF_PRESENT";
/** @internal */
export interface RunCliOptions {
    /** Post-slice CLI arguments (equivalent to `process.argv.slice(2)`). */
    args: string[];
    /** Working directory used to resolve the nmr execution context. */
    cwd: string;
    /** Environment for `runCli` (used for `NMR_RUN_IF_PRESENT` reads and `-R` writes). */
    env: NodeJS.ProcessEnv;
    /** Stream for normal output (help text, override messages). */
    stdout: Writable;
    /** Stream for error output (unknown command, parse errors). */
    stderr: Writable;
}
/** @internal */
export interface RunCliResult {
    exitCode: number;
}
/**
 * Executes the nmr CLI flow in-process and returns the resulting exit code.
 * Holds no global state, reads no `process.*` globals, never calls `process.exit`.
 *
 * @internal
 */
export declare function runCli(options: RunCliOptions): Promise<RunCliResult>;