diff --git a/packages/plugin-navigation-breadcrumbs/package.json b/packages/plugin-navigation-breadcrumbs/package.json
index 29d32cf7e9..c99b879c8b 100644
--- a/packages/plugin-navigation-breadcrumbs/package.json
+++ b/packages/plugin-navigation-breadcrumbs/package.json
@@ -2,6 +2,14 @@
   "name": "@bugsnag/plugin-navigation-breadcrumbs",
   "version": "8.1.1",
   "main": "navigation-breadcrumbs.js",
+  "types": "dist/types/navigation-breadcrumbs.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/types/navigation-breadcrumbs.d.ts",
+      "default": "./dist/navigation-breadcrumbs.js",
+      "import": "./dist/navigation-breadcrumbs.mjs"
+    }
+  },
   "description": "@bugsnag/js plugin to record browser navigation as breadcrumbs",
   "homepage": "https://www.bugsnag.com/",
   "repository": {
@@ -14,6 +22,11 @@
   "files": [
     "*.js"
   ],
+  "scripts": {
+    "build": "npm run build:npm",
+    "build:npm": "rollup --config rollup.config.npm.mjs",
+    "clean": "rm -rf dist/*"
+  },
   "author": "Bugsnag",
   "license": "MIT",
   "devDependencies": {
diff --git a/packages/plugin-navigation-breadcrumbs/rollup.config.npm.mjs b/packages/plugin-navigation-breadcrumbs/rollup.config.npm.mjs
new file mode 100644
index 0000000000..e74dd35c57
--- /dev/null
+++ b/packages/plugin-navigation-breadcrumbs/rollup.config.npm.mjs
@@ -0,0 +1,5 @@
+import createRollupConfig from '../../.rollup/index.mjs'
+
+export default createRollupConfig({
+    input: 'src/navigation-breadcrumbs.ts'
+})
diff --git a/packages/plugin-navigation-breadcrumbs/navigation-breadcrumbs.js b/packages/plugin-navigation-breadcrumbs/src/navigation-breadcrumbs.ts
similarity index 59%
rename from packages/plugin-navigation-breadcrumbs/navigation-breadcrumbs.js
rename to packages/plugin-navigation-breadcrumbs/src/navigation-breadcrumbs.ts
index 873215dd83..10559b8053 100644
--- a/packages/plugin-navigation-breadcrumbs/navigation-breadcrumbs.js
+++ b/packages/plugin-navigation-breadcrumbs/src/navigation-breadcrumbs.ts
@@ -1,14 +1,29 @@
+import { Client, Plugin } from 'packages/core/types'
+
+interface PluginClient extends Client {
+  _isBreadcrumbTypeEnabled: (type: string) => boolean
+}
+
+type ExtendedHistory = History & {
+  replaceState: History['replaceState'] & { _restore?: () => void }
+  pushState: History['pushState'] & { _restore?: () => void }
+}
+
+type ExtendedWindow = Window & {
+  history: ExtendedHistory
+}
+
 /*
 * Leaves breadcrumbs when navigation methods are called or events are emitted
 */
-module.exports = (win = window) => {
-  const plugin = {
+export default (win = window): Plugin => {
+  const plugin: Plugin = {
     load: (client) => {
       if (!('addEventListener' in win)) return
-      if (!client._isBreadcrumbTypeEnabled('navigation')) return
+      if (!(client as PluginClient)._isBreadcrumbTypeEnabled('navigation')) return
 
       // returns a function that will drop a breadcrumb with a given name
-      const drop = name => () => client.leaveBreadcrumb(name, {}, 'navigation')
+      const drop = (name: string) => () => client.leaveBreadcrumb(name, {}, 'navigation')
 
       // simple drops – just names, no meta
       win.addEventListener('pagehide', drop('Page hidden'), true)
@@ -27,15 +42,15 @@ module.exports = (win = window) => {
       }, true)
 
       // the only way to know about replaceState/pushState is to wrap them… >_<
-      if (win.history.pushState) wrapHistoryFn(client, win.history, 'pushState', win, true)
-      if (win.history.replaceState) wrapHistoryFn(client, win.history, 'replaceState', win)
+      if (typeof win.history.pushState === 'function') wrapHistoryFn(client, win.history, 'pushState', win, true)
+      if (typeof win.history.replaceState === 'function') wrapHistoryFn(client, win.history, 'replaceState', win)
     }
   }
 
   if (process.env.NODE_ENV !== 'production') {
-    plugin.destroy = (win = window) => {
-      win.history.replaceState._restore()
-      win.history.pushState._restore()
+    plugin.destroy = (win: ExtendedWindow = window) => {
+      if (win.history.replaceState._restore) win.history.replaceState._restore()
+      if (win.history.pushState._restore) win.history.pushState._restore()
     }
   }
 
@@ -43,26 +58,27 @@ module.exports = (win = window) => {
 }
 
 if (process.env.NODE_ENV !== 'production') {
-  exports.destroy = (win = window) => {
-    win.history.replaceState._restore()
-    win.history.pushState._restore()
+  exports.destroy = (win: ExtendedWindow = window) => {
+    if (win.history.replaceState._restore) win.history.replaceState._restore()
+    if (win.history.pushState._restore) win.history.pushState._restore()
   }
 }
 
 // takes a full url like http://foo.com:1234/pages/01.html?yes=no#section-2 and returns
 // just the path and hash parts, e.g. /pages/01.html?yes=no#section-2
-const relativeLocation = (url, win) => {
-  const a = win.document.createElement('A')
+const relativeLocation = (url: string, win: Window) => {
+  const a = win.document.createElement('a')
   a.href = url
   return `${a.pathname}${a.search}${a.hash}`
 }
 
-const stateChangeToMetadata = (win, state, title, url) => {
+const stateChangeToMetadata = (win: Window, state: string, title: string, url?: string | URL | null) => {
   const currentPath = relativeLocation(win.location.href, win)
   return { title, state, prevState: getCurrentState(win), to: url || currentPath, from: currentPath }
 }
 
-const wrapHistoryFn = (client, target, fn, win, resetEventCount = false) => {
+type HistoryMethods = 'pushState' | 'replaceState'
+const wrapHistoryFn = (client: Client, target: ExtendedHistory, fn: HistoryMethods, win: Window, resetEventCount = false) => {
   const orig = target[fn]
   target[fn] = (state, title, url) => {
     client.leaveBreadcrumb(`History ${fn}`, stateChangeToMetadata(win, state, title, url), 'navigation')
@@ -70,14 +86,14 @@ const wrapHistoryFn = (client, target, fn, win, resetEventCount = false) => {
     if (resetEventCount && typeof client.resetEventCount === 'function') client.resetEventCount()
     // Internet Explorer will convert `undefined` to a string when passed, causing an unintended redirect
     // to '/undefined'. therefore we only pass the url if it's not undefined.
-    orig.apply(target, [state, title].concat(url !== undefined ? url : []))
+    orig.apply(target, [state, title].concat(url !== undefined ? url : []) as Parameters<History[HistoryMethods]>)
   }
   if (process.env.NODE_ENV !== 'production') {
     target[fn]._restore = () => { target[fn] = orig }
   }
 }
 
-const getCurrentState = (win) => {
+const getCurrentState = (win: Window) => {
   try {
     return win.history.state
   } catch (e) {}
diff --git a/packages/plugin-navigation-breadcrumbs/test/navigation-breadcrumbs.test.ts b/packages/plugin-navigation-breadcrumbs/test/navigation-breadcrumbs.test.ts
index 1b05070d53..0d2c34b9de 100644
--- a/packages/plugin-navigation-breadcrumbs/test/navigation-breadcrumbs.test.ts
+++ b/packages/plugin-navigation-breadcrumbs/test/navigation-breadcrumbs.test.ts
@@ -1,4 +1,4 @@
-import plugin from '../navigation-breadcrumbs'
+import plugin from '../src/navigation-breadcrumbs'
 
 import Client from '@bugsnag/core/client'
 
diff --git a/packages/plugin-navigation-breadcrumbs/tsconfig.json b/packages/plugin-navigation-breadcrumbs/tsconfig.json
new file mode 100644
index 0000000000..a4cc3029ff
--- /dev/null
+++ b/packages/plugin-navigation-breadcrumbs/tsconfig.json
@@ -0,0 +1,8 @@
+{
+    "extends": "../../tsconfig.json",
+    "include": ["src/**/*.ts"],
+    "compilerOptions": {
+        "types": ["node"]
+    }
+}
+  
\ No newline at end of file