Fix #101, check for existence of document before injecting css (#114)

* fix: check for existence of document before injecting css

* test: update generated code in fixture

Author: znck

src/vueTransform.js

@@ -238,7 +238,7 @@ export default async function vueTransform (code, id, options) {
         const style = css.map(s => '$compiled' in s ? s.$compiled.code : s.code).join('\n').replace(/(\r?\n|[\s])+/g, ' ')
         const styleCode = `
         (function(){
-            if(document){
+            if(typeof document !== 'undefined'){
                 var head=document.head||document.getElementsByTagName('head')[0],
                     style=document.createElement('style'),
                     css=${JSON.stringify(style)};

test/expects/no-css-extract.js

@@ -1,4 +1,4 @@
-(function(){ if(document){ var head=document.head||document.getElementsByTagName('head')[0], style=document.createElement('style'), css=".baz { color: #008000; } .bar { color: blue } .foo { color: red; } "; style.type='text/css'; if (style.styleSheet){ style.styleSheet.cssText = css; } else { style.appendChild(document.createTextNode(css)); } head.appendChild(style); } })();
+(function(){ if(typeof document !== 'undefined'){ var head=document.head||document.getElementsByTagName('head')[0], style=document.createElement('style'), css=".baz { color: #008000; } .bar { color: blue } .foo { color: red; } "; style.type='text/css'; if (style.styleSheet){ style.styleSheet.cssText = css; } else { style.appendChild(document.createTextNode(css)); } head.appendChild(style); } })();