Sourced from jfmengels/elm-review-simplify's changelog.

[2.1.4] - 2024-04-01

The rule now simplifies unnecessary wrapping of values evaluated by a case expression:

case Just value of
    Nothing -> a
    Just (Ok b) -> c
    Just (Err d) -> e

is simplified to

case value of
    Ok b -> c
    Err d -> e

(same with any variant, list or tuple containing either)

The rule also simplifies (thanks to [@​morteako]):

• Array.length (Array.fromList list) to List.length list
• List.length (Array.toList array) to Array.length array (same for Array.toIndexedList)
• List.isEmpty (Array.toList array) to Array.isEmpty array (same for Array.toIndexedList)
• List.length (Set.toList set) to Set.size set
• List.isEmpty (Set.toList set) to Set.isEmpty set
• List.length (Dict.toList dict) to Dict.size dict (same for Dict.values and Dict.keys)
• List.isEmpty (Dict.toList dict) to Dict.isEmpty dict (same for Dict.values and Dict.keys)

Bug fixes:

• Fixed an issue where String.words "" would incorrectly be fixed to []. Thanks [@​w0rm] and [@​lue-bird]! #300
• Fixed an issue where String.lines "" would incorrectly be fixed to []. Thanks [@​w0rm] and [@​lue-bird]! #300

• a529f9a 2.1.4
• edf643e Update CHANGELOG
• 1904b6b Nested Maybe case-of to Maybe.map2
• cac3ce8 Split caseVariantOfWithUnreachableCasesChecks into single- and multi-variant
• f00fe0c Let introduce caseIndexesMatchingOnDifferentVariant
• c3cb473 Convert some findMaps to firstThatConstructsJust
• cbf1e07 Move shared data out of cases
• b990be2 replace nested Maybe case with Maybe.map2
• 0073354 split off error helpers to reduce indentation
• 7fb0bfa If all but one cases are unreachable, fix to result of remaining case
• Additional commits viewable in compare view

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