import { ChildNode, Node } from "../../ast";
import { RenderContext } from "../../context";
import { Expression } from "../../expression";
import { RenderStream } from "../../io/output_stream";
import { Tag } from "../../tag";
import { Token, TokenStream } from "../../token";
export declare const Cycles: unique symbol;
export declare const UndefinedCycleGroup: unique symbol;
export declare class CycleTag implements Tag {
    readonly block = false;
    readonly name: string;
    protected nodeClass: typeof CycleNode;
    parse(stream: TokenStream): Node;
}
export declare class CycleNode implements Node {
    readonly token: Token;
    readonly args: Expression[];
    readonly group?: Expression | undefined;
    constructor(token: Token, args: Expression[], group?: Expression | undefined);
    protected cycle(context: RenderContext, out: RenderStream, groupName: unknown, args: unknown[]): void;
    render(context: RenderContext, out: RenderStream): Promise<void>;
    renderSync(context: RenderContext, out: RenderStream): void;
    children(): ChildNode[];
}