import { MemoSelector, Selector } from "./Selector";
export declare function expression(str: string | Selector): MemoSelector;
export type GetFunction = (bindingPath: string) => any;
export type SelectorFunction = (get: GetFunction) => any;
export declare const Expression: {
    get: (str: string | SelectorFunction) => MemoSelector;
    compile: (str: string | SelectorFunction) => Selector;
    registerHelper: (name: string, helper: any) => void;
};
export declare function plugFatArrowExpansion(impl: (body: string) => string): void;
export declare function invalidateExpressionCache(): void;
export declare function setGetExpressionCacheCallback(callback: () => Record<string, MemoSelector>): void;
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