Add codemirror mode for nim

changelogs/current_changelog.md

@@ -92,6 +92,8 @@ Provide a bulleted list of breaking changes and a reference to the PR(s) contain
 
 #### New Features
 
+- Added a codemirror mode for [nim](https://nim-lang.org), [PR#5269](https://github.com/nteract/nteract/pull/5269)
+
 Provide a bulleted list of new features or improvements and a reference to the PR(s) containing these changes.
 
 #### Bug Fixes

packages/editor/package.json

@@ -20,6 +20,7 @@
     "@nteract/messaging": "^7.0.9",
     "@nteract/outputs": "^3.0.9",
     "codemirror": "5.57.0",
+    "nim-codemirror-mode": "^0.1.0",
     "rxjs": "^6.3.3"
   },
   "peerDependencies": {

packages/editor/src/index.tsx

@@ -241,6 +241,7 @@ export default class CodeMirrorEditor extends React.Component<
     require("codemirror/mode/rust/rust");
 
     require("./mode/ipython");
+    require("nim-codemirror-mode").register(CodeMirror);
 
     const { editorFocused, focusAbove, focusBelow } = this.props;