jscoverage: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/jscoverage - from package: nodejs-jscoverage
/usr/lib/node_modules/jscoverage/bin/jscoverage - from package: nodejs-jscoverage

You may install the required package with command yum install {package}

Error in other languages:
jscoverage: bevel nie gevind nie
jscoverage: comandă negăsită
jscoverage: comando não encontrado
jscoverage: commande introuvable
jscoverage: command not found
jscoverage: käsku ei ole
jscoverage: không tìm thấy lệnh
jscoverage: komanda nerasta
jscoverage: Kommando nicht gefunden.
jscoverage: kommandot finns inte
jscoverage: komut yok
jscoverage: nie znaleziono polecenia
jscoverage: níor aimsíodh an t-ordú
jscoverage: no se encontró la orden
jscoverage: no s'ha trobat l'ordre
jscoverage: opdracht niet gevonden
jscoverage: parancs nem található
jscoverage: perintah tidak ditemukan
jscoverage: príkaz nenájdený
jscoverage: příkaz nenalezen
jscoverage: команда не найдена
jscoverage: командата не е открита
jscoverage: 命令找不到
jscoverage: コマンドが見つかりません