fix: normalize unicode without cache

closes cnpm/cnpmcore#624

lib/normalize-unicode.js

@@ -1,12 +1,3 @@
-// warning: extremely hot code path.
-// This has been meticulously optimized for use
-// within npm install on large package trees.
-// Do not edit without careful benchmarking.
-const normalizeCache = Object.create(null)
-const { hasOwnProperty } = Object.prototype
 module.exports = s => {
-  if (!hasOwnProperty.call(normalizeCache, s)) {
-    normalizeCache[s] = s.normalize('NFD')
-  }
-  return normalizeCache[s]
+  return s.normalize('NFD')
 }

package.json

@@ -1,6 +1,6 @@
 {
   "author": "GitHub Inc.",
-  "name": "tar",
+  "name": "@fengmk2/tar",
   "description": "tar for node",
   "version": "6.2.0",
   "repository": {