refactor: url in lowercase

Author: alexander-akait

lib/plugin.js

@@ -116,33 +116,33 @@ module.exports = postcss.plugin(pluginName, function(options) {
               return;
             }
 
-            const URLNode = node.nodes[0];
-            const URL = URLNode.value.trim().replace(/\\[\r\n]/g, "");
+            const urlNode = node.nodes[0];
+            const url = urlNode.value.trim().replace(/\\[\r\n]/g, "");
 
             // Skip empty URLs
             // Empty URL function equals request to current stylesheet where it is declared
-            if (URL.length === 0) {
+            if (url.length === 0) {
               return;
             }
 
-            if (!loaderUtils.isUrlRequest(URL)) {
+            if (!loaderUtils.isUrlRequest(url)) {
               return;
             }
 
             // Remove spaces before and after
             node.before = "";
             node.after = "";
 
-            const splittedURL = URL.split(/(\?)?#/);
+            const splittedURL = url.split(/(\?)?#/);
             const normalizedURL = splittedURL[0];
 
             const requestedURL = loaderUtils.urlToRequest(normalizedURL);
             const placeholder =
               "___CSS_LOADER_IMPORT_URL_PLACEHOLDER___" + index + "___";
 
-            URLNode.value = placeholder;
+            urlNode.value = placeholder;
             // Strip quotes, they will be re-added if the module needs them
-            URLNode.quote = "";
+            urlNode.quote = "";
 
             let hasURLEscapeRuntimeCode = false;