export function isZeroWidthMarker(node: any): boolean;
/**
 * Finds the first text cursor position inside a node.
 * @param {import('prosemirror-model').Node} node
 * @param {number} nodePos
 * @returns {number | null}
 */
export function findFirstTextPosInNode(node: import('prosemirror-model').Node, nodePos: number): number | null;
/**
 * Finds the first cursor position for visible content inside a node.
 * @param {import('prosemirror-model').Node} node
 * @param {number} nodePos
 * @returns {number | null}
 */
export function findFirstContentCursorPosInNode(node: import('prosemirror-model').Node, nodePos: number): number | null;
/**
 * Finds the last text cursor position inside a node.
 * @param {import('prosemirror-model').Node} node
 * @param {number} nodePos
 * @returns {number | null}
 */
export function findLastTextPosInNode(node: import('prosemirror-model').Node, nodePos: number): number | null;
/**
 * Finds the last cursor position for visible content inside a node.
 * @param {import('prosemirror-model').Node} node
 * @param {number} nodePos
 * @returns {number | null}
 */
export function findLastContentCursorPosInNode(node: import('prosemirror-model').Node, nodePos: number): number | null;
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