first commit

2023-07-12 16:31:19 +01:00
commit 3424b1927b
23306 changed files with 2217776 additions and 0 deletions
@@ -0,0 +1,16 @@
+'use strict';
+
+module.exports = {
+  isString: function(arg) {
+    return typeof(arg) === 'string';
+  },
+  isObject: function(arg) {
+    return typeof(arg) === 'object' && arg !== null;
+  },
+  isNull: function(arg) {
+    return arg === null;
+  },
+  isNullOrUndefined: function(arg) {
+    return arg == null;
+  }
+};