import type { QuickJSContext, QuickJSHandle, VmFunctionImplementation } from 'quickjs-emscripten-core';
export type QuickJSContextEx = QuickJSContext & {
    disposeEx?: () => void;
};
export declare const wrapContext: (ctx: QuickJSContext) => QuickJSContextEx;
export declare class ContextEx {
    context: QuickJSContext;
    fn: QuickJSHandle;
    fnGenerator: QuickJSHandle;
    fnCounter: number;
    fnMap: Map<number, VmFunctionImplementation<QuickJSHandle>>;
    constructor(context: QuickJSContext);
    disposeEx(): void;
    /** Similar to the original newFunction, but no matter how many new functions are generated, newFunction is called only once. */
    newFunction: (name: string, fn: VmFunctionImplementation<QuickJSHandle>) => QuickJSHandle;
}