/**
 * Wasted-render detection helpers.
 *
 * Kept in a pure module (no window/WebSocket access) so they can be unit-tested
 * in a Node environment without touching the DevTools hook bootstrap.
 */
/** Shallow-equal two plain objects. Returns true if all top-level values reference-equal. */
export declare function shallowEqual(a: any, b: any): boolean;
/**
 * Detect whether a fiber's re-render was unnecessary.
 *   - On initial mount (`fiber.alternate === null`) we don't consider it wasted.
 *   - Wasted when props are shallow-equal AND memoizedState is reference-equal
 *     (hooks' linked-list head is reused across renders when no state changed).
 */
export declare function isWastedRender(fiber: any): boolean;
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