export declare const SKIP: "skip";
export declare const STOP = false;
export declare const CONTINUE = true;
export type Action = typeof CONTINUE | typeof SKIP | typeof STOP | void;
export type TraverserVisit<N, P extends N = N> = (node: N, parents: readonly P[]) => Action;
export type TraverserGetChildren<N, P extends N = N> = (parent: P) => readonly N[];
export type DeleterAction = "deleted" | "should-delete-parent" | "noop";
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