diff --git a/lib/index.js b/lib/index.js
index 620a309..c3e9cbd 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -62,10 +62,10 @@
  *   Sizes for message columns.
  */
 
-import width from 'string-width'
+import stringWidth from 'string-width'
 import {stringifyPosition} from 'unist-util-stringify-position'
-import {statistics} from 'vfile-statistics'
 import {sort} from 'vfile-sort'
+import {statistics} from 'vfile-statistics'
 import {color} from './color.js'
 import {platform} from './platform.js'
 
@@ -86,7 +86,7 @@ const labels = {
 /**
  * Create a report from an error, one file, or multiple files.
  *
- * @param {Error | VFile | Array<VFile> | null | undefined} [files]
+ * @param {Array<VFile> | Error | VFile | null | undefined} [files]
  *   Files or error to report.
  * @param {Options | null | undefined} [options]
  *   Configuration.
@@ -336,5 +336,5 @@ function format(map, one, options) {
  */
 function size(value) {
   const match = /\r?\n|\r/.exec(value)
-  return width(match ? value.slice(0, match.index) : value)
+  return stringWidth(match ? value.slice(0, match.index) : value)
 }
diff --git a/test.js b/test.js
index a81c1f3..9c7d077 100644
--- a/test.js
+++ b/test.js
@@ -1,11 +1,9 @@
 import assert from 'node:assert/strict'
-import path from 'node:path'
 import process from 'node:process'
 import test from 'node:test'
 import strip from 'strip-ansi'
 import {VFile} from 'vfile'
 import {reporter} from './index.js'
-import * as mod from './index.js'
 
 // `log-symbols` without chalk, ignored for Windows:
 /* c8 ignore next 4 */
@@ -52,7 +50,9 @@ try {
 }
 /* eslint-enable no-undef */
 
-test('reporter', () => {
+test('reporter', async function () {
+  const mod = await import('./index.js')
+
   assert.deepEqual(
     Object.keys(mod).sort(),
     ['default', 'reporter'],
@@ -418,7 +418,7 @@ test('reporter', () => {
  */
 function cleanStack(stack, max) {
   return (stack || '')
-    .replace(new RegExp('\\(.+\\' + path.sep, 'g'), '(')
+    .replace(/\(.+[/\\]/g, '(')
     .replace(/file:.+\//g, '')
     .replace(/\d+:\d+/g, '1:1')
     .split('\n')