Make nothing :: Maybe a, remove extra parameter#502
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`nothing` is only used in one place, and as a function it was called incorrectly before: `nothing()` instead of `nothing(undefined)`. This commit fixes that by removing the extra layer of function wrapping entirely, and making `nothing` a constant of type `Maybe a`. This is to avoid the more verbose alternative - adding the `undefined` argument.
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nothingis only used in one place, and as a function it was called incorrectly before:nothing()instead ofnothing(undefined). (See #500 (comment).)This PR fixes that by removing the extra layer of function wrapping entirely, and making
nothinga constant of typeMaybe a. This is to avoid the more verbose alternative — adding theundefinedargument.