import { QuickJSContext, QuickJSHandle } from "quickjs-emscripten-core";
/**
 * Doesn't read symbols. On purpose.
 */
export declare function getProps(obj: Record<PropertyKey, unknown>): string[];
export declare function isObject(obj: unknown): obj is Record<PropertyKey, unknown>;
export declare function parseEnvNumber(num: unknown, defaultValue?: number): number;
export declare function exposeToCtxGlobal(ctx: QuickJSContext, name: string, handle: QuickJSHandle): void;