import { SpawnSyncOptions } from 'child_process';
/**
 * JSONPrimitive represents a primitive which can be safely transmitted over JSON.
 * @see {@link JSONObject}
 * @public
 */
export type JSONPrimitive = string | number | boolean | null | undefined;
/**
 * JSONValue represents a value which can be safely transmitted over JSON.
 * @see {@link JSONObject}
 * @public
 */
export type JSONValue = JSONObject | JSONArray | JSONPrimitive;
/**
 * JSONArray represents an array which can be safely transmitted over JSON.
 * @see {@link JSONObject}
 * @public
 */
export type JSONArray = JSONValue[];
/**
 * JSONObject represents an object which can be safely transmitted over JSON.
 * @public
 */
export interface JSONObject extends Record<string, JSONValue> {
}
/**
 * Value represents data that can safely be input to,
 * or returned from a doSync() function.
 * @public
 */
export type Value = JSONValue;
/**
 * An AsyncFn can be used with doSync().
 * @public
 */
export type AsyncFn<I extends Value[], O extends Value> = (...v: I) => Promise<O>;
/**
 * DoSyncOptions is the set of options that can be used with {@link doSync}.
 *
 * It is a copy of {@link SpawnSyncOptions}.
 * @public
 */
export interface DoSyncOptions extends SpawnSyncOptions {
}
/**
 * doSync returns a synchronous version of certian
 * special asynchronous functions by extracting them
 * and running them as a synchronous node subprocess.
 *
 * The input and output types of the function must be serializible
 * to JSON, and the function must not reference any parent
 * scopes (i.e. file-defined variables) to function.
 *
 * @public
 */
export declare const doSync: <I extends Value[], O extends Value>(f: AsyncFn<I, O>, opts?: DoSyncOptions) => (...ip: I) => O;
export default doSync;
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