wip: migrate to bun

src/isSet.ts

@@ -0,0 +1,27 @@
+import getTag from './.internal/getTag.js';
+import nodeTypes from './.internal/nodeTypes.js';
+import isObjectLike from './isObjectLike.js';
+
+/* Node.js helper references. */
+const nodeIsSet = nodeTypes && nodeTypes.isSet;
+
+/**
+ * Checks if `value` is classified as a `Set` object.
+ *
+ * @since 4.3.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a set, else `false`.
+ * @example
+ *
+ * isSet(new Set)
+ * // => true
+ *
+ * isSet(new WeakSet)
+ * // => false
+ */
+const isSet = nodeIsSet
+    ? (value) => nodeIsSet(value)
+    : (value) => isObjectLike(value) && getTag(value) == '[object Set]';
+
+export default isSet;