Vuepress: process is not defined when checking if I am in a browser environment

[AMontagu]

• [x] I confirm that this is an issue rather than a question.

Bug report

Steps to reproduce

Use a vue component that call process node variable:

created() {
console.log(process);
},

What is expected?

In vue project process variable should be accessible.

What is actually happening?

Other relevant information

I use process variable to know if I am in a broswer mode to load not ssr compatbile components vue-dropzone. code from here: https://github.com/Etheryte/nuxt-dropzone/blob/master/index.js

I use a workaround with lazy loading but just wanted to report it and understand if it's normal:
vueDropzone: () => import('vue2-dropzone'),

• [x] My VuePress version is lower and euqal than 1.0.0-alpha.47:

  • VuePress version: 0.14.11
  • OS: Linux
  • Node.js version: 10.9.0
  • Browser version: latest chrome
  • Is this a global or local install? local
  • Which package manager did you use for the install? npm
  • Does this issue occur when all plugins are disabled? yes

• [ ] My VuePress version is higher than 1.0.0-alpha.47, the following is the output of npx vuepress info in my VuePress project:

[ulivz]

process is Node-only variable. if you want to access it in client side code, you should use [define] to define it.

[luchuanqi]

我也遇到同样的问题

[luchuanqi]

我也遇到同样的问题

我这个还比较尴尬的是，我这个是npm包中使用到了process