Moving to node_modules folder to make easier to upgrade

trying to move from Bootstrap 3 to Bootstrap 5

node_modules/es6-object-assign/index.js

@@ -0,0 +1,46 @@
+/**
+ * Code refactored from Mozilla Developer Network:
+ * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
+ */
+
+'use strict';
+
+function assign(target, firstSource) {
+  if (target === undefined || target === null) {
+    throw new TypeError('Cannot convert first argument to object');
+  }
+
+  var to = Object(target);
+  for (var i = 1; i < arguments.length; i++) {
+    var nextSource = arguments[i];
+    if (nextSource === undefined || nextSource === null) {
+      continue;
+    }
+
+    var keysArray = Object.keys(Object(nextSource));
+    for (var nextIndex = 0, len = keysArray.length; nextIndex < len; nextIndex++) {
+      var nextKey = keysArray[nextIndex];
+      var desc = Object.getOwnPropertyDescriptor(nextSource, nextKey);
+      if (desc !== undefined && desc.enumerable) {
+        to[nextKey] = nextSource[nextKey];
+      }
+    }
+  }
+  return to;
+}
+
+function polyfill() {
+  if (!Object.assign) {
+    Object.defineProperty(Object, 'assign', {
+      enumerable: false,
+      configurable: true,
+      writable: true,
+      value: assign
+    });
+  }
+}
+
+module.exports = {
+  assign: assign,
+  polyfill: polyfill
+};