replace var with const (#3316)
replace var with const (#3316)


fsgiudice/quasar,quasarframework/quasar,pdanpdan/quasar,rstoenescu/quasar-framework,quasarframework/quasar,quasarframework/quasar,pdanpdan/quasar,pdanpdan/quasar,rstoenescu/quasar-framework,quasarframework/quasar,fsgiudice/quasar,rstoenescu/quasar-framework,pdanpdan/quasar,fsgiudice/quasar