import { Context } from '../Context';
import { Node } from '..';
export declare type Fn = (options: FnArgs) => Promise<any> | any;
export interface FnArgs {
    args: FnInput[];
    ctx: Context;
    node: Node;
    input?: FnInput;
    block?: Node[];
    elseBlock?: Node[];
}
export interface FnInput {
    ident?: string;
    value: any;
}
export interface FnConfig {
    pipeable: boolean;
    pipeRequired: boolean;
    block: boolean;
    blockRequired: boolean;
    elseBlock: boolean;
    elseBlockRequired: boolean;
    maxArgs: number;
    requiredArgs: number;
}
export declare const registerFn: (name: string, exec: Fn, config?: Partial<FnConfig> | undefined) => void;
export declare function registerPre(name: string, exec: Fn, config?: Partial<FnConfig>): void;
export declare function registerPost(name: string, exec: Fn, config?: Partial<FnConfig>): void;
export declare const hasFn: (name: string) => boolean;
export declare const hasPre: (name: string) => boolean;
export declare const hasPost: (name: string) => boolean;
export declare const execFn: (name: string, args: FnArgs) => Promise<any>;
export declare const execPre: (name: string, args: FnArgs) => Promise<any>;
export declare const execPost: (name: string, args: FnArgs) => Promise<any>;
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