ed.brz9.dev/proj/fonts/README.md

It's declared this way:

let vm = new Vue({ data() { return { testText: "The quick brown fox jumps over the lazy dog", planck : { "name": "Planck", "fonts" : [ "400" ], "tags" : ["sans-serif"], }, bizon : { "name": "Bizon", "fonts" : [ "400" ], "tags" : ["sans-serif"], }, archive : { "name": "Archive", "fonts" : [ "400" ], "tags" : ["sans-serif"], }, typefaceList : [ this.archive, this.planck, this.bizon ] } } }).$mount('#root')