import * as liyad from 'liyad';
interface SxOp {
    'op': string;
}
declare type AstChild = liyad.SxTokenChild | SxOp | undefined;
declare type Ast = liyad.SxToken | AstChild | SxOp | undefined;
export declare function parse(s: string): Ast;
export declare function evaluate(s: string): liyad.SxToken;
export {};