Moving to node_modules folder to make easier to upgrade

trying to move from Bootstrap 3 to Bootstrap 5

node_modules/codemirror/rollup.config.js

@@ -0,0 +1,42 @@
+import buble from '@rollup/plugin-buble';
+
+export default [
+  {
+    input: "src/codemirror.js",
+    output: {
+      banner: `// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+// This is CodeMirror (https://codemirror.net), a code editor
+// implemented in JavaScript on top of the browser's DOM.
+//
+// You can find some technical background for some of the code below
+// at http://marijnhaverbeke.nl/blog/#cm-internals .
+`,
+      format: "umd",
+      file: "lib/codemirror.js",
+      name: "CodeMirror"
+    },
+    plugins: [ buble({namedFunctionExpressions: false}) ]
+  },
+  {
+    input: ["src/addon/runmode/runmode-standalone.js"],
+    output: {
+      format: "iife",
+      file: "addon/runmode/runmode-standalone.js",
+      name: "CodeMirror",
+      freeze: false, // IE8 doesn't support Object.freeze.
+    },
+    plugins: [ buble({namedFunctionExpressions: false}) ]
+  },
+  {
+    input: ["src/addon/runmode/runmode.node.js"],
+    output: {
+      format: "cjs",
+      file: "addon/runmode/runmode.node.js",
+      name: "CodeMirror",
+      freeze: false, // IE8 doesn't support Object.freeze.
+    },
+    plugins: [ buble({namedFunctionExpressions: false}) ]
+  },
+];