import { Nilable } from "./lang.js";
export declare type AnyNode = AnySyncNode | AnyAsyncNode;
export declare type AnyAsyncNode = Promise<AnySyncNode>;
export declare type AnySyncNode = TextNode | Elem | Frag;
export declare class TextNode extends String {
}
export declare function F(children: AnyNode[]): Frag;
export declare class Frag {
    #private;
    constructor();
    get children(): Nilable<AnyNode[]>;
    withText(text: string): this;
    addText(text: string): void;
    maybeWithChildren(nodes?: Nilable<AnyNode[]>): this;
    withChildren(nodes: AnyNode[]): this;
    withChild(node: AnyNode): this;
    addChild(node: AnyNode): void;
}
export declare function E(tagName: string, attrs: ElemAttrs, children?: Nilable<AnyNode[]>): Elem;
export declare type ElemAttrs = Record<string, unknown>;
export declare class Elem extends Frag {
    #private;
    constructor(tagName: string);
    get tagName(): string;
    get attrs(): Record<string, unknown>;
    withAttrs(attrs: Record<string, unknown>): Elem;
    withAttr(name: string, value: unknown): Elem;
    addAttr(name: string, value: unknown): void;
    addChild(node: AnySyncNode): void;
}