import { Chunk } from "@tsplus/stdlib/collections/Chunk/definition";
import { Sink } from "@effect/core/stream/Sink/definition/base";
/**
 * A sink that folds its input chunks with the provided function and initial
 * state. `f` must preserve chunking-invariance.
 * @tsplus static effect/core/stream/Sink.Ops foldLeftChunks
 * @tsplus location "@effect/core/stream/Sink/operations/foldLeftChunks"
 */
export declare function foldLeftChunks<In, S>(z: S, f: (s: S, input: Chunk<In>) => S): Sink<never, never, In, never, S>;
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