Handles both success and failure cases of an effect, allowing for additional side effects. **Details** The `matchEffect` function is similar to {@link match}, but it enables you to perform side effects in the handlers for both success and failure outcomes. **When to Use** This is useful when you need to execute additional actions, like logging or notifying users, based on whether an effect succeeds or fails. **Example** (Handling Both Success and Failure Cases with Side Effects) ```ts import { Effect } from "effect" const success: Effect.Effect = Effect.succeed(42) const failure: Effect.Effect = Effect.fail( new Error("Uh oh!") ) const program1 = Effect.matchEffect(success, { onFailure: (error) => Effect.succeed(`failure: ${error.message}`).pipe( Effect.tap(Effect.log) ), onSuccess: (value) => Effect.succeed(`success: ${value}`).pipe(Effect.tap(Effect.log)) }) console.log(Effect.runSync(program1)) // Output: // timestamp=... level=INFO fiber=#0 message="success: 42" // success: 42 const program2 = Effect.matchEffect(failure, { onFailure: (error) => Effect.succeed(`failure: ${error.message}`).pipe( Effect.tap(Effect.log) ), onSuccess: (value) => Effect.succeed(`success: ${value}`).pipe(Effect.tap(Effect.log)) }) console.log(Effect.runSync(program2)) // Output: // timestamp=... level=INFO fiber=#1 message="failure: Uh oh!" // failure: Uh oh! ``` ```ts declare const matchEffect: { (options: { readonly onFailure: (e: E) => Effect readonly onSuccess: (a: A) => Effect }): (self: Effect) => Effect ( self: Effect, options: { readonly onFailure: (e: E) => Effect readonly onSuccess: (a: A) => Effect }, ): Effect } ```

Equivalent to `mapBoth` for Returning Effects?

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Equivalent to `mapBoth` for Returning Effects?

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