planning

node_modules/is-hexadecimal/index.js

@@ -0,0 +1,15 @@
+'use strict'
+
+module.exports = hexadecimal
+
+// Check if the given character code, or the character code at the first
+// character, is hexadecimal.
+function hexadecimal(character) {
+  var code = typeof character === 'string' ? character.charCodeAt(0) : character
+
+  return (
+    (code >= 97 /* a */ && code <= 102) /* z */ ||
+    (code >= 65 /* A */ && code <= 70) /* Z */ ||
+    (code >= 48 /* A */ && code <= 57) /* Z */
+  )
+}