Yarn Patch for Util Package

README.md

1. Put the patch in .yarn/patches folder.
2. Add the patch in resolutions of package.json.
3. Make sure both files are committed to the repo.

package.json

{
  "resolutions": {
    "util@0.12.5": "patch:util@npm:0.12.5#.yarn/patches/util-npm-0.12.5-3668276f26.patch"
  }
}

util-npm-0.12.5-3668276f26.patch

diff --git a/util.js b/util.js
index 6db393e279126c82e074539649053a2cf314206a..34ddc1adfb82d5bc6096fe9d1b9f0b25f55d5777 100644
--- a/util.js
+++ b/util.js
@@ -106,7 +106,7 @@ exports.deprecate = function(fn, msg) {
 var debugs = {};
 var debugEnvRegex = /^$/;
 
-if (process.env.NODE_DEBUG) {
+if (typeof process !== 'undefined' && process.env.NODE_DEBUG) {
   var debugEnv = process.env.NODE_DEBUG;
   debugEnv = debugEnv.replace(/[|\\{}()[\]^$+?.]/g, '\\$&')
     .replace(/\*/g, '.*')