Hello,
I've been trying to get particles js to work with vuepress.
On my config I have:

head: [
    ['script', {src: 'https://cdn.jsdelivr.net/npm/particles.js@2.0.0/particles.min.js'}]
]

It works when I run vuepress dev but as soon as I try to build with vuepress build I get the error saying ParticlesJS is not defined even though it is there and working.