import { Either, type IEither } from "@emprespresso/utils";

export const getRequiredEnv = (name: string): IEither<Error, string> =>
  Either.fromFailable(() => {
    const value = Deno.env.get(name); // could throw when no permission.
    if (!value) {
      throw new Error(`environment variable "${name}" is required D:`);
    }
    return value;
  });