vue-toastr

You can find React.js version of this library from here

For Vue.js 3 => vue-toastr@3.0.5 (still beta) There is no breaking changes.The api is as same as v2.
The Only changed thing is JS files doesn't include css file content. 
You need to import dist/style.css or src/vue-toastr.scss to your project.
This gives more flexibility to library.

Dev branch: https://github.com/s4l1h/vue-toastr/tree/dev-v3 
Demo: https://codesandbox.io/s/quizzical-grass-eb62u

For Vue.js 3 => vue-toastr@3.0.5

For Vue.js 2 => vue-toastr@2.1.2

For Vue.js 1 => vue-toastr@1.0.4