Index: node_modules/mkdirp/lib/path-arg.js
===================================================================
--- node_modules/mkdirp/lib/path-arg.js	(revision 81bc7da776d8cda42939ef4ab350c88d13b4941f)
+++ node_modules/mkdirp/lib/path-arg.js	(revision 81bc7da776d8cda42939ef4ab350c88d13b4941f)
@@ -0,0 +1,29 @@
+const platform = process.env.__TESTING_MKDIRP_PLATFORM__ || process.platform
+const { resolve, parse } = require('path')
+const pathArg = path => {
+  if (/\0/.test(path)) {
+    // simulate same failure that node raises
+    throw Object.assign(
+      new TypeError('path must be a string without null bytes'),
+      {
+        path,
+        code: 'ERR_INVALID_ARG_VALUE',
+      }
+    )
+  }
+
+  path = resolve(path)
+  if (platform === 'win32') {
+    const badWinChars = /[*|"<>?:]/
+    const {root} = parse(path)
+    if (badWinChars.test(path.substr(root.length))) {
+      throw Object.assign(new Error('Illegal characters in path.'), {
+        path,
+        code: 'EINVAL',
+      })
+    }
+  }
+
+  return path
+}
+module.exports = pathArg