import type { MaskInputFn, MaskInputOptions } from './types';
import type { IMirror, serializedNodeWithId, serializedNode } from '../rrweb-types';
export declare function isElement(n: Node): n is Element;
export declare function isShadowRoot(n: Node): n is ShadowRoot;
export declare function isNativeShadowDom(shadowRoot: ShadowRoot): boolean;
declare interface CSSImportRule extends CSSRule {
    readonly href: string;
    readonly layerName: string | null;
    readonly media: MediaList;
    readonly styleSheet: CSSStyleSheet;
    readonly supportsText?: string | null;
}
export declare function escapeImportStatement(rule: CSSImportRule): string;
export declare function stringifyStylesheet(s: CSSStyleSheet): string | null;
export declare function stringifyRule(rule: CSSRule, sheetHref: string | null): string;
export declare function fixSafariColons(cssStringified: string): string;
export declare function isCSSImportRule(rule: CSSRule): rule is CSSImportRule;
export declare function isCSSStyleRule(rule: CSSRule): rule is CSSStyleRule;
export declare class Mirror implements IMirror<Node> {
    private idNodeMap;
    private nodeMetaMap;
    getId(n: Node | undefined | null): number;
    getNode(id: number): Node | null;
    getIds(): number[];
    getMeta(n: Node): serializedNodeWithId | null;
    removeNodeFromMap(n: Node): void;
    has(id: number): boolean;
    hasNode(node: Node): boolean;
    add(n: Node, meta: serializedNodeWithId): void;
    replace(id: number, n: Node): void;
    reset(): void;
}
export declare function createMirror(): Mirror;
export declare function maskInputValue({ element, maskInputOptions, tagName, type, value, maskInputFn, }: {
    element: HTMLElement;
    maskInputOptions: MaskInputOptions;
    tagName: string;
    type: string | null;
    value: string | null;
    maskInputFn?: MaskInputFn;
}): string;
export declare function toLowerCase<T extends string>(str: T): Lowercase<T>;
export declare function is2DCanvasBlank(canvas: HTMLCanvasElement): boolean;
export declare function isNodeMetaEqual(a: serializedNode, b: serializedNode): boolean;
export declare function getInputType(element: HTMLElement): Lowercase<string> | null;
export declare function extractFileExtension(path: string, baseURL?: string): string | null;
export declare function absolutifyURLs(cssText: string | null, href: string): string;
export declare function normalizeCssString(cssText: string, _testNoPxNorm?: boolean): string;
export declare function splitCssText(cssText: string, style: HTMLStyleElement, _testNoPxNorm?: boolean): string[];
export declare function markCssSplits(cssText: string, style: HTMLStyleElement): string;
export {};