document is not defined from webpack in SSR
[issue link]Hi,
after upgrading to nuxt 1.4.0 from 1.3.0 I got an error from weback document is not defined in SSR. I ran yarn dev
nuxt:render Rendering url / +0ms
{ ReferenceError: document is not defined
at addStyle (webpack-internal:///11:116:22)
at addStylesToDom (webpack-internal:///11:100:20)
at module.exports (webpack-internal:///11:54:3)
at eval (webpack-internal:///10:8:37)
at Object.<anonymous> (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:146:1)
at __webpack_require__ (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:30:30)
at eval (webpack-internal:///0:3:1)
at Object.<anonymous> (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:83:1)
at __webpack_require__ (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:30:30)
at eval (webpack-internal:///3:2:77)
at Object.<anonymous> (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:104:1)
at __webpack_require__ (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:30:30)
at C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:76:18
at C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:79:10
at webpackUniversalModuleDefinition (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:3:20)
at Object.<anonymous> (C:\Users\ellen\my-site\node_modules\vue2-highcharts\dist\vue-highcharts.js:10:3)
at Module._compile (module.js:635:30)
at Object.Module._extensions..js (module.js:646:10)
at Module.load (module.js:554:32)
at tryModuleLoad (module.js:497:12)
at Function.Module._load (module.js:489:3)
at Module.require (module.js:579:17) statusCode: 500, name: 'ReferenceError' }
Whats wrong? In 1.3.0 it works correctly.