attemptOrElse

function Result.attemptOrElse(
    unsafeFn: () => T,
    orElse: (error: unknown) => E
): Result<T, E>

Wraps a function that may throw an exception in a Result, transforming any caught error. If the unsafeFn executes successfully, returns its result wrapped in Ok. If it throws an error, transforms the error using orElse and returns it wrapped in Err.

Example

Result.attemptOrElse(
    () => 5,
    (e) => `Error: ${e}`,
);
// Ok<number>(5)

Result.attemptOrElse(
    () => {
        throw new Error("Something went wrong");
    },
    (e) => `Caught: ${e.message}`,
);
// Err<string>("Caught: Something went wrong")

Result.attemptOrElse(
    () => JSON.parse("invalid json"),
    (e) => new Error("Failed to parse json", { cause: e }),
);
// Err<Error>(new Error("Failed to parse json", { cause: e }))