Moving to node_modules folder to make easier to upgrade

trying to move from Bootstrap 3 to Bootstrap 5

node_modules/codemirror/addon/mode/multiplex_test.js

@@ -0,0 +1,49 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function() {
+  CodeMirror.defineMode("markdown_with_stex", function(){
+    var inner = CodeMirror.getMode({}, "stex");
+    var outer = CodeMirror.getMode({}, "markdown");
+
+    var innerOptions = {
+      open: '$',
+      close: '$',
+      mode: inner,
+      delimStyle: 'delim',
+      innerStyle: 'inner'
+    };
+
+    return CodeMirror.multiplexingMode(outer, innerOptions);
+  });
+
+  var mode = CodeMirror.getMode({}, "markdown_with_stex");
+
+  function MT(name) {
+    test.mode(
+      name,
+      mode,
+      Array.prototype.slice.call(arguments, 1),
+      'multiplexing');
+  }
+
+  MT(
+    "stexInsideMarkdown",
+    "[strong **Equation:**] [delim&delim-open $][inner&tag \\pi][delim&delim-close $]");
+
+  CodeMirror.defineMode("identical_delim_multiplex", function() {
+    return CodeMirror.multiplexingMode(CodeMirror.getMode({indentUnit: 2}, "javascript"), {
+      open: "#",
+      close: "#",
+      mode: CodeMirror.getMode({}, "markdown"),
+      parseDelimiters: true,
+      innerStyle: "q"
+    });
+  });
+
+  var mode2 = CodeMirror.getMode({}, "identical_delim_multiplex");
+
+  test.mode("identical_delimiters_with_parseDelimiters", mode2, [
+    "[keyword let] [def x] [operator =] [q #foo][q&em *bar*][q #];"
+  ], "multiplexing")
+})();