dd

extensions/Excel转JSON/node_modules/atomically/src/utils/lang.ts

@@ -0,0 +1,28 @@
+
+/* LANG */
+
+const Lang = {
+
+  isFunction: ( x: any ): x is Function => {
+
+    return typeof x === 'function';
+
+  },
+
+  isString: ( x: any ): x is string => {
+
+    return typeof x === 'string';
+
+  },
+
+  isUndefined: ( x: any ): x is undefined => {
+
+    return typeof x === 'undefined';
+
+  }
+
+};
+
+/* EXPORT */
+
+export default Lang;