import type { TraceFrame } from "../types.js";
/**
 * Find the innermost frame that reverted — the deepest frame in the tree with
 * either an `error` or a `revertReason`. Returns null if no frame reverted.
 *
 * "Innermost" matters because reverts bubble up: a deep contract call reverts,
 * its parent re-throws, and so on up the tree. The root frame's error often
 * reflects the original cause, but the deepest one carries the precise
 * `revertReason` string.
 */
export declare function findRevertFrame(root: TraceFrame): TraceFrame | null;
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