diff --git a/index.js b/index.js
index 092b50e..809f613 100644
--- a/index.js
+++ b/index.js
@@ -9,7 +9,7 @@ const DEFAULTS = {
   assetPaths: [],
   maxFileSize: 10240,
   b64Svg: false,
-  strict: false
+  strict: false,
 };
 
 const loop = cb => {
@@ -35,7 +35,10 @@ module.exports = postcss.plugin('postcss-image-inliner', (opts = {}) => {
     const urls = new Set([]);
     const filter = /^(background(?:-image)?)|(content)|(cursor)/;
     // Get urls
-    css.walkDecls(filter, loop(({url}) => urls.add(url)));
+    css.walkDecls(
+      filter,
+      loop(({url}) => urls.add(url))
+    );
 
     const mapping = await getDataUriMapping([...urls], options);
 
diff --git a/lib/image.js b/lib/image.js
index 9de740f..27f8c5b 100644
--- a/lib/image.js
+++ b/lib/image.js
@@ -68,8 +68,8 @@ async function resolve(filepath, {assetPaths, maxFileSize, resolver = () => unde
 
   try {
     return await getResource(file, {base, filter});
-  } catch (err) {
-    debug(err.message, filepath, 'could not be resolved');
+  } catch (error) {
+    debug(error.message, filepath, 'could not be resolved');
   }
 }
 
diff --git a/test/test.js b/test/test.js
index 6dacedc..bb9eaba 100644
--- a/test/test.js
+++ b/test/test.js
@@ -6,11 +6,11 @@ const path = require('path');
 const fs = require('fs');
 const http = require('http');
 const postcss = require('postcss');
-const assert = require('chai').assert;
+const {assert} = require('chai');
 const finalhandler = require('finalhandler');
 const serveStatic = require('serve-static');
 
-const plugin = require('../');
+const plugin = require('..');
 
 function read(filename) {
   return fs.readFileSync(path.join(__dirname, 'fixtures/styles', filename), 'utf8');
@@ -29,8 +29,8 @@ const test = (input, output, opts = {}, done) => {
       assert.isEmpty(result.warnings());
     })
     .then(done)
-    .catch(err => {
-      done(err);
+    .catch(error => {
+      done(error);
     });
 };