import { LazyArg } from "@tsplus/stdlib/data/Function";
import { STM } from "@effect/core/stm/STM/definition/base";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
/**
 * Extracts the optional value, or executes the effect 'orElse'.
 * @tsplus static effect/core/stm/STM.Aspects someOrElseSTM
 * @tsplus pipeable effect/core/stm/STM someOrElseSTM
 * @tsplus location "@effect/core/stm/STM/operations/someOrElseSTM"
 */
export declare function someOrElseSTM<R2, E2, B>(orElse: LazyArg<STM<R2, E2, B>>): <R, E, A>(self: import("../definition").STM<R, E, import("@tsplus/stdlib/data/Maybe").Maybe<A>>) => import("../definition").STM<R2 | R, E2 | E, B | A>;
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