style: fix linting issues

Author: Arcanemagus

lib/helpers.js

@@ -115,7 +115,7 @@ export default {
    * @param  {number} severity severity from the sass-lint linter
    * @return {string}          severity for the Linter API
    */
-  getSeverity: severity => (severityMap.has(severity)
+  getSeverity: (severity) => (severityMap.has(severity)
     ? severityMap.get(severity)
     : 'info'
   ),

lib/main.js

@@ -71,7 +71,7 @@ export default {
   },
 
   deactivate() {
-    idleCallbacks.forEach(callbackID => window.cancelIdleCallback(callbackID));
+    idleCallbacks.forEach((callbackID) => window.cancelIdleCallback(callbackID));
     idleCallbacks.clear();
     return this.subs.dispose();
   },
@@ -96,7 +96,7 @@ export default {
     }
     if ((this.globalPath === '') && (prefixPath === null)) {
       const npmCommand = process.platform === 'win32' ? 'npm.cmd' : 'npm';
-      const env = Object.assign({}, consistentEnv());
+      const env = { ...consistentEnv() };
       try {
         prefixPath = spawnSync(npmCommand, [
           'get',