JSLint watch without gulp or grunt

jslint-watch.sh

# Ubuntu: apt-get intall entr
jslint-watch() {
    local folder=$(test "x$1" != x && echo "$1" || echo .)
    local files="find $folder -type f -name '*.js'"
    local modified='$('"$files"' -printf "%T+ %p\n" | sort -r | head -1 | cut -d" " -f2)'
    
    eval $files | entr sh -c 'jslint '"$modified"' --color'
}

# MacOS:  brew install entr
jslint-watch() {
    local folder=$(test "x$1" != x && echo "$1" || echo .)
    find "$folder" -type f -name '*.js' | entr jslint /_ --color
}