diff --git a/libraries/overleaf-editor-core/lib/file_data/range.js b/libraries/overleaf-editor-core/lib/file_data/range.js
index 11690e6d5e..83bd42d742 100644
--- a/libraries/overleaf-editor-core/lib/file_data/range.js
+++ b/libraries/overleaf-editor-core/lib/file_data/range.js
@@ -1,7 +1,7 @@
 class Range {
   /**
-   * @param {number} pos 
-   * @param {number} length 
+   * @param {number} pos
+   * @param {number} length
    */
   constructor(pos, length) {
     this.pos = pos
@@ -11,7 +11,7 @@ class Range {
   toRaw() {
     return {
       pos: this.pos,
-      length: this.length
+      length: this.length,
     }
   }
 
diff --git a/package-lock.json b/package-lock.json
index f32cc5d920..18e059f6b6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -37,6 +37,7 @@
         "patch-package": "^6.4.7"
       },
       "devDependencies": {
+        "@types/mocha": "^10.0.6",
         "eslint": "^8.15.0",
         "eslint-config-prettier": "^8.5.0",
         "eslint-config-standard": "^17.0.0",
@@ -15914,9 +15915,9 @@
       "integrity": "sha512-K0VQKziLUWkVKiRVrx4a40iPaxTUefQmjtkQofBkYRcoaaL/8rhwDWww9qWbrgicNOgnpIsMxyNIUM4+n6dUIA=="
     },
     "node_modules/@types/mocha": {
-      "version": "9.1.0",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-9.1.0.tgz",
-      "integrity": "sha512-QCWHkbMv4Y5U9oW10Uxbr45qMMSzl4OzijsozynUAgx3kEHUdXB00udx2dWDQ7f2TU2a2uuiFaRZjCe3unPpeg==",
+      "version": "10.0.6",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-10.0.6.tgz",
+      "integrity": "sha512-dJvrYWxP/UcXm36Qn36fxhUKu8A/xMRXVT2cliFF1Z7UA9liG5Psj3ezNSZw+5puH2czDXRLcXQxf8JbJt0ejg==",
       "dev": true
     },
     "node_modules/@types/mocha-each": {
@@ -46725,6 +46726,12 @@
       "integrity": "sha512-XTIieEY+gvJ39ChLcB4If5zHtPxt3Syj5rgZR+e1ctpmK8NjPf0zFqsz4JpLJT0xla9GFDKjy8Cpu331nrmE1Q==",
       "dev": true
     },
+    "services/web/node_modules/@types/mocha": {
+      "version": "9.1.1",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-9.1.1.tgz",
+      "integrity": "sha512-Z61JK7DKDtdKTWwLeElSEBcWGRLY8g95ic5FoQqI9CMx0ns/Ghep3B4DfcEimiKMvtamNVULVNKEsiwV3aQmXw==",
+      "dev": true
+    },
     "services/web/node_modules/@typescript-eslint/eslint-plugin": {
       "version": "6.7.4",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.7.4.tgz",
@@ -55764,6 +55771,12 @@
           "integrity": "sha512-XTIieEY+gvJ39ChLcB4If5zHtPxt3Syj5rgZR+e1ctpmK8NjPf0zFqsz4JpLJT0xla9GFDKjy8Cpu331nrmE1Q==",
           "dev": true
         },
+        "@types/mocha": {
+          "version": "9.1.1",
+          "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-9.1.1.tgz",
+          "integrity": "sha512-Z61JK7DKDtdKTWwLeElSEBcWGRLY8g95ic5FoQqI9CMx0ns/Ghep3B4DfcEimiKMvtamNVULVNKEsiwV3aQmXw==",
+          "dev": true
+        },
         "@typescript-eslint/eslint-plugin": {
           "version": "6.7.4",
           "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.7.4.tgz",
@@ -61866,9 +61879,9 @@
       "integrity": "sha512-K0VQKziLUWkVKiRVrx4a40iPaxTUefQmjtkQofBkYRcoaaL/8rhwDWww9qWbrgicNOgnpIsMxyNIUM4+n6dUIA=="
     },
     "@types/mocha": {
-      "version": "9.1.0",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-9.1.0.tgz",
-      "integrity": "sha512-QCWHkbMv4Y5U9oW10Uxbr45qMMSzl4OzijsozynUAgx3kEHUdXB00udx2dWDQ7f2TU2a2uuiFaRZjCe3unPpeg==",
+      "version": "10.0.6",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-10.0.6.tgz",
+      "integrity": "sha512-dJvrYWxP/UcXm36Qn36fxhUKu8A/xMRXVT2cliFF1Z7UA9liG5Psj3ezNSZw+5puH2czDXRLcXQxf8JbJt0ejg==",
       "dev": true
     },
     "@types/mocha-each": {
diff --git a/package.json b/package.json
index c8ffba7734..639c5107ea 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
     "patch-package": "^6.4.7"
   },
   "devDependencies": {
+    "@types/mocha": "^10.0.6",
     "eslint": "^8.15.0",
     "eslint-config-prettier": "^8.5.0",
     "eslint-config-standard": "^17.0.0",