🎉 initiate project *astro_rewrite*

node_modules/unherit/index.js

@@ -0,0 +1,29 @@
+/**
+ * Create a subclass that can be modified without affecting the super class.
+ *
+ * @template {{prototype: object, new (...args: any[]): any}} Class
+ * @param {Class} Super
+ * @return {Class}
+ */
+export function unherit(Super) {
+  const Of = class extends Super {}
+
+  // Clone values.
+  const proto = Of.prototype
+  /** @type {string} */
+  let key
+
+  // We specifically want to get *all* fields, not just own fields.
+  // eslint-disable-next-line guard-for-in
+  for (key in proto) {
+    /** @type {unknown} */
+    const value = proto[key]
+
+    if (value && typeof value === 'object') {
+      // @ts-expect-error: shallow clone arrays or other values.
+      proto[key] = 'concat' in value ? value.concat() : Object.assign({}, value)
+    }
+  }
+
+  return Of
+}