gistfile1.txt

function createFolders(inputFolderNames) {
    let folderMap = {}
    let createdFolderNames = []
    inputFolderNames.forEach(pFolderName => {
        if(folderMap[pFolderName] !== undefined){
            let folderTime = folderMap[pFolderName] + 1;
            let toBeAddedFolderName = pFolderName + "(" + folderTime + ")"
            while(folderMap[toBeAddedFolderName] !== undefined){
                folderTime++
                toBeAddedFolderName = pFolderName + "(" + folderTime + ")"
            }
            createdFolderNames.push(toBeAddedFolderName)
            folderMap[toBeAddedFolderName] = 0
        } else  {
            folderMap[pFolderName] = 0
            createdFolderNames.push(pFolderName)
        }
    })

    return createdFolderNames

}

let names = ["pes","fifa","gta","pes(2019)"]
console.log(createFolders(names)) // [ 'pes', 'fifa', 'gta', 'pes(2019)' ]
names = ["gta","gta(1)","gta","avalon", "gta"]
console.log(createFolders(names)) // [ 'gta', 'gta(1)', 'gta(2)', 'avalon', 'gta(3)' ]
names = ["onepiece","onepiece(1)","onepiece(2)","onepiece(3)","onepiece(10)","onepiece"]
console.log(createFolders(names)) // ['onepiece','onepiece(1)','onepiece(2)','onepiece(3)','onepiece(10)','onepiece(4)']
names= ["onepiece","onepiece(1)","onepiece(2)","onepiece(3)","onepiece(3)","onepiece"]
console.log(createFolders(names)) // ['onepiece','onepiece(1)','onepiece(2)','onepiece(3)','onepiece(3)(1)','onepiece(4)']