Add CodeMirror to Additional CSS / Custom HTML block

.eslintrc.js

@@ -76,6 +76,31 @@ const restrictedImports = [
 		message:
 			"edit-widgets is a WordPress top level package that shouldn't be imported into other packages",
 	},
+	{
+		name: 'codemirror',
+		message:
+			'Please use dynamic import (`import()`) instead since it is a large dependency.',
+	},
+	{
+		name: '@codemirror/commands',
+		message:
+			'Please use dynamic import (`import()`) instead since it is a large dependency.',
+	},
+	{
+		name: '@codemirror/lang-css',
+		message:
+			'Please use dynamic import (`import()`) instead since it is a large dependency.',
+	},
+	{
+		name: '@codemirror/lang-html',
+		message:
+			'Please use dynamic import (`import()`) instead since it is a large dependency.',
+	},
+	{
+		name: '@codemirror/view',
+		message:
+			'Please use dynamic import (`import()`) instead since it is a large dependency.',
+	},
 ];
 
 module.exports = {