Handling Nested Contexts in Effect Without Monad Transformers

Option.Do.pipe(
  Option.bind('foo$', Function.constant(foo$$)),
  Option.bind('bar$', Function.constant(bar$$)),
  Option.bind('baz$', Function.constant(baz$$)),
  Option.map(({foo$, bar$, baz$}) => Either.Do.pipe(
    Either.bind('foo', Function.constant(foo$)),
    Either.bind('bar', Function.constant(bar$)),
    Either.bind('baz', Function.constant(baz$)),
    Either.map(({foo, bar, baz}) => foo + bar + baz)
  ))
)

const OptionEither = Option.Transform(Either);
OptionEither.Do.pipe(
  OptionEither.bind('foo', Function.constant(foo$$)),
  OptionEither.bind('bar', Function.constant(bar$$)),
  OptionEither.bind('baz', Function.constant(baz$$)),
  OptionEither.map(({foo, bar, baz}) => foo + bar + baz)
)