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@effect-ts/system

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

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// ets_tracing: off import type { Sync } from "./core.js" import { fold_ } from "./core.js" /** * Returns whether this effect is a failure. */ export function isFailure<R, E, A>(self: Sync<R, E, A>) { return fold_( self, () => true, () => false ) }