Function handleErrorAsResult

test/README.example.proof.ts:532–545

(
      self: Effected<Effect.Error<ErrorName> | E, R>,
    )

      });

    const handleErrorAsResult = <R, E extends Effect, ErrorName extends string>(
      self: Effected<Effect.Error<ErrorName> | E, R>,
    ): Effected<E, Result<R, { error: ErrorName; message?: string }>> => {
      const isErrorEffect = (name: string | symbol): name is `error:${ErrorName}` => {
        if (typeof name === "symbol") return false;
        return name.startsWith("error:");
      };

      return self
        .andThen((value) => ok(value))
        .handle(isErrorEffect, (({ effect, terminate }: any, message: any) => {
          terminate(err({ error: effect.name.slice("error:".length), message }));
        }) as never) as Effected<E, Result<R, { error: ErrorName; message?: string }>>;
    };

    const range2 = (start: number, stop: number) => handleErrorAsResult(range(start, stop));