diff --git a/filenames.auto.gni b/filenames.auto.gni
index f4c1c11b1cbb..78976452acb9 100644
--- a/filenames.auto.gni
+++ b/filenames.auto.gni
@@ -131,7 +131,7 @@ auto_filenames = {
     "lib/renderer/api/ipc-renderer.js",
     "lib/renderer/api/remote.js",
     "lib/renderer/api/web-frame.ts",
-    "lib/renderer/callbacks-registry.js",
+    "lib/renderer/callbacks-registry.ts",
     "lib/renderer/chrome-api.ts",
     "lib/renderer/content-scripts-injector.ts",
     "lib/renderer/extensions/event.ts",
@@ -291,7 +291,7 @@ auto_filenames = {
     "lib/renderer/api/module-list.js",
     "lib/renderer/api/remote.js",
     "lib/renderer/api/web-frame.ts",
-    "lib/renderer/callbacks-registry.js",
+    "lib/renderer/callbacks-registry.ts",
     "lib/renderer/chrome-api.ts",
     "lib/renderer/content-scripts-injector.ts",
     "lib/renderer/extensions/event.ts",
@@ -340,7 +340,7 @@ auto_filenames = {
     "lib/renderer/api/module-list.js",
     "lib/renderer/api/remote.js",
     "lib/renderer/api/web-frame.ts",
-    "lib/renderer/callbacks-registry.js",
+    "lib/renderer/callbacks-registry.ts",
     "lib/renderer/ipc-renderer-internal-utils.ts",
     "lib/renderer/ipc-renderer-internal.ts",
     "lib/renderer/webpack-provider.ts",
diff --git a/lib/renderer/api/remote.js b/lib/renderer/api/remote.js
index 01a57ffb4c62..009e7ea3c7d9 100644
--- a/lib/renderer/api/remote.js
+++ b/lib/renderer/api/remote.js
@@ -4,7 +4,7 @@ const v8Util = process.electronBinding('v8_util')
 const { isPromise } = require('electron')
 const resolvePromise = Promise.resolve.bind(Promise)
 
-const CallbacksRegistry = require('@electron/internal/renderer/callbacks-registry')
+const { CallbacksRegistry } = require('@electron/internal/renderer/callbacks-registry')
 const bufferUtils = require('@electron/internal/common/buffer-utils')
 const errorUtils = require('@electron/internal/common/error-utils')
 const { ipcRendererInternal } = require('@electron/internal/renderer/ipc-renderer-internal')
diff --git a/lib/renderer/callbacks-registry.js b/lib/renderer/callbacks-registry.ts
similarity index 76%
rename from lib/renderer/callbacks-registry.js
rename to lib/renderer/callbacks-registry.ts
index 40ef0c840779..32d50e892719 100644
--- a/lib/renderer/callbacks-registry.js
+++ b/lib/renderer/callbacks-registry.ts
@@ -1,16 +1,12 @@
-'use strict'
-
 const v8Util = process.electronBinding('v8_util')
 
-class CallbacksRegistry {
-  constructor () {
-    this.nextId = 0
-    this.callbacks = {}
-  }
+export class CallbacksRegistry {
+  private nextId: number = 0
+  private callbacks: Record<number, Function> = {}
 
-  add (callback) {
+  add (callback: Function) {
     // The callback is already added.
-    let id = v8Util.getHiddenValue(callback, 'callbackId')
+    let id = v8Util.getHiddenValue<number>(callback, 'callbackId')
     if (id != null) return id
 
     id = this.nextId += 1
@@ -19,6 +15,7 @@ class CallbacksRegistry {
     // so that release errors can be tracked down easily.
     const regexp = /at (.*)/gi
     const stackString = (new Error()).stack
+    if (!stackString) return
 
     let filenameAndLine
     let match
@@ -30,24 +27,25 @@ class CallbacksRegistry {
       if (location.includes('electron/js2c')) continue
 
       const ref = /([^/^)]*)\)?$/gi.exec(location)
-      filenameAndLine = ref[1]
+      if (ref) filenameAndLine = ref![1]
       break
     }
+
     this.callbacks[id] = callback
     v8Util.setHiddenValue(callback, 'callbackId', id)
     v8Util.setHiddenValue(callback, 'location', filenameAndLine)
     return id
   }
 
-  get (id) {
+  get (id: number) {
     return this.callbacks[id] || function () {}
   }
 
-  apply (id, ...args) {
+  apply (id: number, ...args: any[]) {
     return this.get(id).apply(global, ...args)
   }
 
-  remove (id) {
+  remove (id: number) {
     const callback = this.callbacks[id]
     if (callback) {
       v8Util.deleteHiddenValue(callback, 'callbackId')
@@ -55,5 +53,3 @@ class CallbacksRegistry {
     }
   }
 }
-
-module.exports = CallbacksRegistry
diff --git a/spec/api-callbacks-registry-spec.js b/spec-main/api-callbacks-registry-spec.js
similarity index 93%
rename from spec/api-callbacks-registry-spec.js
rename to spec-main/api-callbacks-registry-spec.js
index 63f74bb048fd..5d8f0fef229f 100644
--- a/spec/api-callbacks-registry-spec.js
+++ b/spec-main/api-callbacks-registry-spec.js
@@ -4,7 +4,7 @@ const dirtyChai = require('dirty-chai')
 const { expect } = chai
 chai.use(dirtyChai)
 
-const CallbacksRegistry = require('../lib/renderer/callbacks-registry')
+const { CallbacksRegistry } = require('../lib/renderer/callbacks-registry')
 
 describe('CallbacksRegistry module', () => {
   let registry = null
diff --git a/typings/internal-ambient.d.ts b/typings/internal-ambient.d.ts
index 466c0b7d75a9..395a7bbc3576 100644
--- a/typings/internal-ambient.d.ts
+++ b/typings/internal-ambient.d.ts
@@ -16,6 +16,7 @@ declare namespace NodeJS {
   interface V8UtilBinding {
     getHiddenValue<T>(obj: any, key: string): T;
     setHiddenValue<T>(obj: any, key: string, value: T): void;
+    deleteHiddenValue(obj: any, key: string): void;
     requestGarbageCollectionForTesting(): void;
   }
   interface Process {