'alertify' is not defined in vuejs

[JesseBlackman]

Error

✘ http://eslint.org/docs/rules/no-undef 'alertify' is not defined
/opt/mywork/html/csplayer/src/views/Login.vue:73:11
alertify.delay(1000).error(respMsg)
^

Steps to reproduce the behavior

I install alertify.js by add it to my package.json:
"alertify.js": "^1.0.12",
and in my template using:
alertify.delay(1000).error(respMsg)

[suemcnab]

Have you done this?

import alertify from 'alertify.js'
Vue.use(alertify)