Set proper &path for Next.js and Nuxt.js

after#ftplugin#javascript.vim

autocmd BufNewFile,BufRead * call <SID>DetectFrontEndFramework()

function! s:DetectFrontEndFramework()
    if v:version >= 801 && has('patch1803')
        let package_json = findfile('package.json', '.;')

        if len(package_json)
            let dependencies = readfile(package_json)
                        \ ->join()
                        \ ->json_decode()
                        \ ->get('dependencies', {})
                        \ ->keys()

            if dependencies->count('next')
                set path=.,,components/**,lib/**,pages/**,public/**,ssl/**,styles/**
            endif

            if dependencies->count('nuxt')
                set path=.,,assets/**,components/**,layouts/**,middleware/**,pages/**,plugins/**,static/**,store/**,test/**,content/**
            endif
        endif
    endif
endfunction