Kata

Task: Your task is to implement parseArray function that parses the array representation to JS-Array.

Examples:

"[1,2,3,4]" -> [1,2,3,4]
" [1.5, 2, 3, [1, 2, 3, [4]], 5]" -> [1.5, 2, 3, [1, 2, 3, [4]], 5]

"[1,2,3,4]" -> Just (A [ N 1, N 2, N 3, N 4 ])
" [1.5, 2, 3, [1, 2, 3, [4]], 5]" -> Just (A [ N 1.5, N 2, N 3, A [ N 1, N 2, N 3, A [ N 4 ] ], N 5 ])

In case of parse error return null or Nothing:

"abc" -> null
"1" -> null
"[1,2,3" -> null
"[#]" -> null

"abc" -> Nothing
"1" -> Nothing
"[1,2,3" -> Nothing
"[#]" -> Nothing

For simplicity, only number literals appear in the array:

"[0xFF, 1e2]" -> Just (A [ N 255, N 100 ])

Note: require() / eval() / JSON.parse() / new Function() are disabled.