import { FlameNode } from '../renderer/FlameDataProcessor';
/**
 * Checks if a frame represents Node.js internal code
 * @param fileName The file name from the flame node
 * @returns true if this is a Node.js internal frame
 */
export declare function isNodeInternal(fileName: string | undefined): boolean;
/**
 * Checks if a frame represents code from node_modules
 * @param fileName The file name from the flame node
 * @returns true if this is a node_modules dependency frame
 */
export declare function isNodeModule(fileName: string | undefined): boolean;
/**
 * Determines if a frame should be shown when "Show App Code Only" is enabled
 * @param fileName The file name from the flame node
 * @returns true if this frame should be visible (is application code)
 */
export declare function shouldShowFrame(fileName: string | undefined): boolean;
/**
 * Recursively filters a FlameNode tree to show only application code.
 * Filtered frames are collapsed - their values are added to their parent.
 *
 * @param node The FlameNode to filter
 * @param showAppCodeOnly If true, filter out Node.js internals and node_modules
 * @returns The filtered node, or null if the entire subtree should be filtered
 */
export declare function filterFlameTree(node: FlameNode, showAppCodeOnly: boolean): FlameNode | null;
/**
 * Filters a FlameNode tree and recalculates values and positions.
 * This is the main entry point for applying the "Show App Code Only" filter.
 *
 * @param root The root FlameNode
 * @param showAppCodeOnly If true, filter out Node.js internals and node_modules
 * @returns A new FlameNode tree with filtering applied
 */
export declare function filterAndRecalculate(root: FlameNode, showAppCodeOnly: boolean): FlameNode;
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