feat:node-modules

node_modules/mathjs/lib/esm/utils/scope.js

@@ -0,0 +1,18 @@
+import { ObjectWrappingMap, PartitionedMap } from './map.js';
+
+/**
+ * Create a new scope which can access the parent scope,
+ * but does not affect it when written. This is suitable for variable definitions
+ * within a block node, or function definition.
+ *
+ * If parent scope has a createSubScope method, it delegates to that. Otherwise,
+ * creates an empty map, and copies the parent scope to it, adding in
+ * the remaining `args`.
+ *
+ * @param {Map} parentScope
+ * @param  {Object} args
+ * @returns {PartitionedMap}
+ */
+export function createSubScope(parentScope, args) {
+  return new PartitionedMap(parentScope, new ObjectWrappingMap(args), new Set(Object.keys(args)));
+}