diff --git a/packages/plugin-browser-device/package.json b/packages/plugin-browser-device/package.json
index d55eea23e6..d43d99005b 100644
--- a/packages/plugin-browser-device/package.json
+++ b/packages/plugin-browser-device/package.json
@@ -2,6 +2,14 @@
   "name": "@bugsnag/plugin-browser-device",
   "version": "8.0.0",
   "main": "device.js",
+  "types": "dist/types/device.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/types/device.d.ts",
+      "default": "./dist/device.js",
+      "import": "./dist/device.mjs"
+    }
+  },
   "description": "@bugsnag/js plugin to set device info in browsers",
   "homepage": "https://www.bugsnag.com/",
   "repository": {
@@ -24,5 +32,10 @@
   },
   "peerDependencies": {
     "@bugsnag/core": "^8.0.0"
+  },
+  "scripts": {
+    "build": "npm run build:npm",
+    "build:npm": "rollup --config rollup.config.npm.mjs",
+    "clean": "rm -rf dist/*"
   }
 }
diff --git a/packages/plugin-browser-device/rollup.config.npm.mjs b/packages/plugin-browser-device/rollup.config.npm.mjs
new file mode 100644
index 0000000000..5a577d0e74
--- /dev/null
+++ b/packages/plugin-browser-device/rollup.config.npm.mjs
@@ -0,0 +1,6 @@
+import createRollupConfig from '../../.rollup/index.mjs'
+
+export default createRollupConfig({
+    input: 'src/device.ts',
+    external: ['@bugsnag/cuid'],
+})
diff --git a/packages/plugin-browser-device/device.js b/packages/plugin-browser-device/src/device.ts
similarity index 54%
rename from packages/plugin-browser-device/device.js
rename to packages/plugin-browser-device/src/device.ts
index bd1437b970..f0ca9245f2 100644
--- a/packages/plugin-browser-device/device.js
+++ b/packages/plugin-browser-device/src/device.ts
@@ -1,35 +1,24 @@
-const assign = require('@bugsnag/core/lib/es-utils/assign')
-const BUGSNAG_ANONYMOUS_ID_KEY = 'bugsnag-anonymous-id'
+import type { Device, Plugin } from '@bugsnag/core'
+import assign from '@bugsnag/core/lib/es-utils/assign'
+import setDefaultUserId from './set-default-user-id'
+import getDeviceId from './get-device-id'
 
-const getDeviceId = (win) => {
-  try {
-    const storage = win.localStorage
-
-    let id = storage.getItem(BUGSNAG_ANONYMOUS_ID_KEY)
-
-    // If we get an ID, make sure it looks like a valid cuid. The length can
-    // fluctuate slightly, so some leeway is built in
-    if (id && /^c[a-z0-9]{20,32}$/.test(id)) {
-      return id
-    }
-
-    const cuid = require('@bugsnag/cuid')
-    id = cuid()
-
-    storage.setItem(BUGSNAG_ANONYMOUS_ID_KEY, id)
-
-    return id
-  } catch (err) {
-    // If localStorage is not available (e.g. because it's disabled) then give up
+// Declare deprecated navigator values
+declare global {
+  interface Navigator {
+    browserLanguage?: string
+    systemLanguage?: string
+    userLanguage?: string
   }
 }
 
 /*
  * Automatically detects browser device details
  */
-module.exports = (nav = navigator, win = window) => ({
+export default (nav = navigator, win = window): Plugin => ({
+  name: 'device',
   load: (client) => {
-    const device = {
+    const device: Device = {
       locale: nav.browserLanguage || nav.systemLanguage || nav.userLanguage || nav.language,
       userAgent: nav.userAgent
     }
@@ -43,6 +32,7 @@ module.exports = (nav = navigator, win = window) => ({
           : 'portrait'
     }
 
+    // @ts-expect-error _config is private API
     if (client._config.generateAnonymousId) {
       device.id = getDeviceId(win)
     }
@@ -50,6 +40,7 @@ module.exports = (nav = navigator, win = window) => ({
     client.addOnSession(session => {
       session.device = assign({}, session.device, device)
       // only set device id if collectUserIp is false
+      // @ts-expect-error _config is private API
       if (!client._config.collectUserIp) setDefaultUserId(session)
     })
 
@@ -60,22 +51,17 @@ module.exports = (nav = navigator, win = window) => ({
         device,
         { time: new Date() }
       )
+      // @ts-expect-error _config is private API
       if (!client._config.collectUserIp) setDefaultUserId(event)
+      // @ts-expect-error second parameter is private API
     }, true)
   },
+  // @ts-expect-error _config is private API
   configSchema: {
     generateAnonymousId: {
-      validate: value => value === true || value === false,
+      validate: (value: unknown): value is boolean => value === true || value === false,
       defaultValue: () => true,
       message: 'should be true|false'
     }
   }
 })
-
-const setDefaultUserId = (eventOrSession) => {
-  // device id is also used to populate the user id field, if it's not already set
-  const user = eventOrSession.getUser()
-  if (!user || !user.id) {
-    eventOrSession.setUser(eventOrSession.device.id)
-  }
-}
diff --git a/packages/plugin-browser-device/src/get-device-id.ts b/packages/plugin-browser-device/src/get-device-id.ts
new file mode 100644
index 0000000000..1bdcdbedef
--- /dev/null
+++ b/packages/plugin-browser-device/src/get-device-id.ts
@@ -0,0 +1,27 @@
+import cuid from '@bugsnag/cuid'
+
+const BUGSNAG_ANONYMOUS_ID_KEY = 'bugsnag-anonymous-id'
+
+const getDeviceId = (win: Window) => {
+  try {
+    const storage = win.localStorage
+
+    let id = storage.getItem(BUGSNAG_ANONYMOUS_ID_KEY)
+
+    // If we get an ID, make sure it looks like a valid cuid. The length can
+    // fluctuate slightly, so some leeway is built in
+    if (id && /^c[a-z0-9]{20,32}$/.test(id)) {
+      return id
+    }
+
+    id = cuid()
+
+    storage.setItem(BUGSNAG_ANONYMOUS_ID_KEY, id)
+
+    return id
+  } catch (err) {
+    // If localStorage is not available (e.g. because it's disabled) then give up
+  }
+}
+
+export default getDeviceId
diff --git a/packages/plugin-browser-device/src/set-default-user-id.ts b/packages/plugin-browser-device/src/set-default-user-id.ts
new file mode 100644
index 0000000000..abc08d9af2
--- /dev/null
+++ b/packages/plugin-browser-device/src/set-default-user-id.ts
@@ -0,0 +1,11 @@
+import type { Event, Session } from '@bugsnag/core'
+
+const setDefaultUserId = (eventOrSession: Event | Session) => {
+  // device id is also used to populate the user id field, if it's not already set
+  const user = eventOrSession.getUser()
+  if ((!user || !user.id) && eventOrSession.device) {
+    eventOrSession.setUser(eventOrSession.device.id)
+  }
+}
+
+export default setDefaultUserId
diff --git a/packages/plugin-browser-device/test/device.test.ts b/packages/plugin-browser-device/test/device.test.ts
index 819a208243..35cf600f0a 100644
--- a/packages/plugin-browser-device/test/device.test.ts
+++ b/packages/plugin-browser-device/test/device.test.ts
@@ -1,4 +1,4 @@
-import plugin from '../device'
+import plugin from '../src/device'
 
 import Client, {
   SessionDeliveryPayload,
diff --git a/packages/plugin-browser-device/tsconfig.json b/packages/plugin-browser-device/tsconfig.json
new file mode 100644
index 0000000000..c76cdab7cd
--- /dev/null
+++ b/packages/plugin-browser-device/tsconfig.json
@@ -0,0 +1,8 @@
+{
+    "extends": "../../tsconfig.json",
+    "include": ["src/**/*.ts"],
+    "compilerOptions": {
+      "target": "ES2020"
+    }
+}
+  
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index 2253bf436b..ca14ba1a2a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -68,7 +68,6 @@
     "packages/in-flight",
     "packages/plugin-aws-lambda",
     "packages/plugin-browser-context",
-    "packages/plugin-browser-device",
     "packages/plugin-contextualize",
     "packages/plugin-navigation-breadcrumbs",
     "packages/plugin-network-breadcrumbs",