djopa () {
    ( webpack $@ ) > >( rev ) 2> >( cat )
}
djopus () {
    ( npm $@ ) > >( rev ) 2> >( cat )
}

hui () {
    if [[ $2 =~ 'webpack' ]] | [[ $2 =~ 'npm' ]] | [[ $2 =~ 'grep' ]]
    then
        grep $1 'if' $3
    else
        grep $@
    fi
}

alias npm=djopus
alias webpack=djopa
alias grep=hui