generate ignore regexes just once

index.js

@@ -218,7 +218,12 @@ module.exports = class Localdrive {
     for await (const dirent of iterator) {
       const key = unixPathResolve(keyname, dirent.name)
 
-      if (ignored(ignore, key)) continue
+      const regexes = ignore.map(e => {
+        const pattern = `^${e.replace(/\*/g, '[^/]+')}$`
+        return new RegExp(pattern)
+      })
+
+      if (ignored(regexes, key)) continue
 
       let isDirectory = dirent.isDirectory()
 
@@ -370,10 +375,8 @@ async function isEmptyDirectory (drive, key) {
   return true
 }
 
-function ignored (ignore, key) {
-  return ignore.some(e => {
-    const pattern = `^${e.replace(/\*/g, '[^/]+')}$`
-    const regex = new RegExp(pattern)
+function ignored (regexes, key) {
+  return regexes.some(regex => {
     return regex.test(key)
   })
 }