import { LSAwP, LSA } from "../types";
export declare enum StringCreatorKeys {
    CONCAT = "CONCAT"
}
export declare type StringCreators<LeafT extends string = string, TreeT = unknown> = {
    concat(str: string): LSAwP<string>;
};
export declare type StringActions<KeyT extends keyof StringCreators, LeafT extends string = string, TreeT = unknown> = ReturnType<StringCreators<LeafT, TreeT>[KeyT]>;
export declare function isConcatActionString(action: LSA): action is StringActions<'concat'>;