import * as parse5 from "parse5";
import * as postcss from "postcss";
export declare type RuleScope = Array<postcss.AtRule>;
export declare type RuleIteratorWithScope = (rule: postcss.Rule, scope: RuleScope) => false | undefined | void;
export declare type BodyElement = parse5.Element & parse5.ParentNode & {
    nodeName: "body";
    tagName: "body";
};
export declare function isRule(node: postcss.Node): node is postcss.Rule;
export declare function isAtRule(node: postcss.Node): node is postcss.AtRule;
export declare function isContainer(node: postcss.Node): node is postcss.Container;
export declare function walkRules(container: postcss.Container, eachRule: RuleIteratorWithScope): void;
export declare function allElements(parent: parse5.ParentNode): Array<parse5.DefaultTreeElement>;
export declare type StartTagCallback = (node: parse5.DefaultTreeElement) => EndTagCallback;
export declare type EndTagCallback = ((node: parse5.DefaultTreeElement) => void) | undefined | void;
/**
 * invokes the callback with each element in the document via a depth first traversal.
 */
export declare function walkElements(node: parse5.Node | parse5.ParentNode, cb: StartTagCallback): void;
export declare function isElement(node: parse5.Node): node is parse5.DefaultTreeElement;
export declare function isParentNode(node: parse5.Node | parse5.ParentNode): node is parse5.DefaultTreeParentNode;
export declare function parseStylesheet(content: string): Promise<postcss.Result>;
export declare function parseHtml(html: string): parse5.DefaultTreeDocument;
export declare function bodyElement(document: parse5.Document): BodyElement | undefined;
/**
 * serializes an element and it's children to a string.
 */
export declare function serializeElement(element: parse5.Node): string;
/**
 * outputs the element's opening tag only.
 */
export declare function debugElement(element: parse5.DefaultTreeElement): string;
export declare function documentToString(document: parse5.Document): string;
export declare const POSTCSS_NOOP_PLUGIN: postcss.Plugin<{}>;
//# sourceMappingURL=util.d.ts.map