Website Structure

Frontend-Learner/node_modules/on-change/source/is-builtin.js

@@ -0,0 +1,15 @@
+export function isBuiltinWithMutableMethods(value) {
+	return value instanceof Date
+		|| value instanceof Set
+		|| value instanceof Map
+		|| value instanceof WeakSet
+		|| value instanceof WeakMap
+		|| ArrayBuffer.isView(value);
+}
+
+export function isBuiltinWithoutMutableMethods(value) {
+	// Primitives and null → true. Functions → false. RegExp → true.
+	return value === null
+		|| (typeof value !== 'object' && typeof value !== 'function')
+		|| value instanceof RegExp;
+}