import type { SerializedStyles } from '@emotion/react';
import type { MemoizedFn } from 'memoize-one';
export declare const ANCHOR_VARIABLE_NAME = "--ed-pm-node-anchor";
export declare const isCSSAttrAnchorSupported: MemoizedFn<() => boolean>;
export declare const isCSSAnchorSupported: MemoizedFn<() => boolean | undefined>;
export declare const nativeAnchorStyles: SerializedStyles;
