refactor: move rule fn outside of setup fn

Author: TheAlexLichter

lib/module.js

@@ -10,9 +10,10 @@ export default function nuxtSvgLoader() {
   this.extendBuild(setupVueSvgLoader(options))
 }
 
+const svgRulePredicate = rule => rule.test && rule.test.test('.svg')
+
 const setupVueSvgLoader = options => (config) => {
   // https://github.com/egoist/svg-to-vue-component#nuxtjs-2
-  const svgRulePredicate = rule => rule.test && rule.test.test('.svg')
   const imageLoaderRule = config.module.rules.find(svgRulePredicate)
 
   if (!imageLoaderRule) {