@effect-ts/system/Effect/onLeft.d.ts

Effect-TS is a zero dependency set of libraries to write highly productive, purely functional TypeScript at scale.

import type { Effect } from "./effect.js";
/**
 * Returns this effect if environment is on the left, otherwise returns
 * whatever is on the right unmodified. Note that the result is lifted
 * in either.
 */
export declare function onLeft<C>(__trace?: string): <R, E, A>(self: Effect<R, E, A>) => Effect<import("../Either/core.js").Either<R, C>, E, import("../Either/core.js").Either<A, C>>;
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