export type JsonInputFailure = {
    readonly kind: 'invalid-json';
    readonly detail: string;
    readonly message: string;
} | {
    readonly kind: 'missing-file';
    readonly message: string;
    readonly path: string;
};
export type JsonInputResult = {
    readonly ok: true;
    readonly value: unknown;
} | {
    readonly ok: false;
    readonly error: JsonInputFailure;
};
/** Parse one inline JSON source without applying a command-specific error format. */
export declare function parseJsonInput(source: string): JsonInputResult;
/** Load JSON from inline input, a file, or stdin without applying caller policy. */
export declare function loadJsonInput(input: string | undefined, inputFile: string | undefined, readStdin?: () => Promise<string>): Promise<JsonInputResult>;