import { EvaluationContext, Expression } from '../types';
export declare const _maybeExpression: (value: any) => boolean;
export declare const _ellipsis: (str: string, maxlen?: number) => string;
export declare const _evaluateDev: (evaluate: any, isExpression: any) => (context: EvaluationContext, expOrValue: Expression | any) => any;
/**
 * In case Symbol() is not available, all we need is an unique object instance
 * to be used for reference identity comparison.
 *
 * @function _pseudoSymbol
 * @private
 */
export declare const _pseudoSymbol: () => {};