Inconsistent Return Type for splitPathAndFormat Function

 Effect.Effect<never, IncorrectFileFormat, {splitPath: string, format: ".webp" | ".png" | ".jpg"}>

const splitPathAndFormat: (path: string) => Effect.Effect<never, never, {
    splitPath: string;
    format: ".webp" | ".png" | ".jpg";
}> | Effect.Effect<never, IncorrectFileFormat, never>

class IncorrectFileFormat extends Data.TaggedClass("IncorrectFileFormat")<{
  readonly custom: string;
}> {}

export const supportableFormats = [".webp" as const, ".png" as const, ".jpg" as const];
export const splitPathAndFormat = (path: string) => {
  const splitPathArray = path.split(".");
  const splitPath = splitPathArray.slice(0, -1).join(".");
  const format = `.${splitPathArray[splitPathArray.length - 1]}` as (typeof supportableFormats)[number];
  return supportableFormats.includes(format)
    ? Effect.succeed({
        splitPath: splitPath,
        format: format,
      })
    : Effect.fail(
        new IncorrectFileFormat({
          custom: `There was not an acceptable format per the supportableFormats: ${supportableFormats}`,
        })
      );
};