import { Collection } from "@tsplus/stdlib/collections/Collection/definition";
import { Effect } from "@effect/core/io/Effect/definition";
/**
 * Merges an `Collection<Effect<R, E, A>>` to a single `Effect<R, E, B>`, working
 * sequentially.
 * @tsplus static effect/core/io/Effect.Ops mergeAll
 * @tsplus location "@effect/core/io/Effect/operations/mergeAll"
 */
export declare function mergeAll<R, E, A, B>(as: Collection<Effect<R, E, A>>, zero: B, f: (b: B, a: A) => B): Effect<R, E, B>;
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