-- Lua Library inline imports
function __TS__StringSubstring(self, start, ____end)
    if ____end ~= ____end then
        ____end = 0
    end
    if (____end ~= nil) and (start > ____end) then
        start, ____end = __TS__Unpack({____end, start})
    end
    if start >= 0 then
        start = start + 1
    else
        start = 1
    end
    if (____end ~= nil) and (____end < 0) then
        ____end = 0
    end
    return string.sub(self, start, ____end)
end

function __TS__StringSplit(source, separator, limit)
    if limit == nil then
        limit = 4294967295
    end
    if limit == 0 then
        return {}
    end
    local out = {}
    local index = 0
    local count = 0
    if (separator == nil) or (separator == "") then
        while (index < (#source - 1)) and (count < limit) do
            out[count + 1] = __TS__StringAccess(source, index)
            count = count + 1
            index = index + 1
        end
    else
        local separatorLength = #separator
        local nextIndex = (string.find(source, separator, nil, true) or 0) - 1
        while (nextIndex >= 0) and (count < limit) do
            out[count + 1] = __TS__StringSubstring(source, index, nextIndex)
            count = count + 1
            index = nextIndex + separatorLength
            nextIndex = (string.find(
                source,
                separator,
                math.max(index + 1, 1),
                true
            ) or 0) - 1
        end
    end
    if count < limit then
        out[count + 1] = __TS__StringSubstring(source, index)
    end
    return out
end

function __TS__ArrayMap(arr, callbackfn)
    local newArray = {}
    do
        local i = 0
        while i < #arr do
            newArray[i + 1] = callbackfn(_G, arr[i + 1], i, arr)
            i = i + 1
        end
    end
    return newArray
end

testString = __TS__ArrayMap(
    __TS__StringSplit("teststring", ""),
    function(____, a) return a end
)
for ____, i in ipairs(testString) do
    print(i)
end