import { Tree } from "@tsplus/stdlib/collections/Tree/definition";
/**
 * @tsplus static Tree.Aspects reduce
 * @tsplus pipeable Tree reduce
 * @tsplus location "@tsplus/stdlib/collections/Tree/reduce"
 */
export declare function reduce<A, B>(b: B, f: (b: B, a: A) => B): (self: Tree<A>) => B;
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