feat: don't require ua-parser-js in lambda-context

BREAKING CHANGE: If you want to continue to use `ua-parser-js` in
`lambda-context` you will need to use `lambdaContextWithUaParser` and
pass in your own parser function as described here:
https://github.com/birchill/bugsnag-zero?tab=readme-ov-file#using-a-custom-user-agent-string-parser

This is because from version `ua-parser-js` version 2 onwards, users are
required to either use the AGPL version or license the library.

It's best to allow users of this package to decide how they want to
consume `ua-parser-js`.

package.json

@@ -70,8 +70,5 @@
     "typescript": "5.6.3",
     "vitest": "2.1.5",
     "vitest-github-actions-reporter": "0.11.1"
-  },
-  "dependencies": {
-    "ua-parser-js": "^1.0.32"
   }
 }

src/browser-context.ts

@@ -1,18 +1,7 @@
 import { ExtendedClientApi, Plugin } from './client';
 import { BugsnagEvent } from './event';
 import { parseUserAgent } from './simple-ua-parser';
-
-export type UserAgentInfo = {
-  browserName?: string;
-  browserVersion?: string;
-  osName?: string;
-  osVersion?: string;
-  manufacturer?: string;
-  model?: string;
-  modelNumber?: string;
-};
-
-export type UserAgentParserFn = (userAgent: string) => UserAgentInfo;
+import type { UserAgentParserFn } from './user-agent-types';
 
 export const browserContextWithUaParser = (
   uaParser: UserAgentParserFn

src/index.ts

@@ -344,12 +344,7 @@ export { nodeNotifyUnhandledExceptions } from './node-unhandled-exceptions';
 
 // Other plugins
 export { appDuration } from './app-duration';
-export {
-  browserContext,
-  browserContextWithUaParser,
-  UserAgentParserFn,
-  UserAgentInfo,
-} from './browser-context';
+export { browserContext, browserContextWithUaParser } from './browser-context';
 export { deviceOrientation } from './deviceorientation';
 export { limitEvents } from './limit-events';
 export {
@@ -365,6 +360,7 @@ export {
   redactObject,
 } from './redact-keys';
 export { stringifyValues } from './stringify-values';
+export type { UserAgentParserFn, UserAgentInfo } from './user-agent-types';
 
 // Delivery plugins
 export { FetchDelivery } from './fetch-delivery';

src/lambda-context.ts

@@ -4,11 +4,12 @@ import {
   Context,
 } from 'aws-lambda';
 import { platform as osPlatform, release as osRelease } from 'os';
-import UAParser from 'ua-parser-js';
 
 import { ExtendedClientApi, Plugin } from './client';
 import { BugsnagEvent } from './event';
+import { parseUserAgent } from './simple-ua-parser';
 import { toExceptions } from './to-exceptions';
+import { UserAgentParserFn } from './user-agent-types';
 
 export interface LambdaContextPlugin {
   setContext(
@@ -22,7 +23,8 @@ export interface LambdaContextPlugin {
   };
 }
 
-export const lambdaContext = (
+export const lambdaContextWithUaParser = (
+  uaParser: UserAgentParserFn,
   initialEvent?: Record<string, any>,
   initialContext?: Context
 ): Plugin => {
@@ -157,9 +159,7 @@ export const lambdaContext = (
             lambdaEvent.requestContext.identity.userAgent || undefined;
         }
 
-        const browser = userAgent
-          ? new UAParser(userAgent).getBrowser()
-          : undefined;
+        const browser = userAgent ? uaParser(userAgent) : undefined;
         const hostname = lambdaEvent?.requestContext?.domainName;
 
         let timeEpoch: number | undefined;
@@ -171,12 +171,15 @@ export const lambdaContext = (
 
         event.device = {
           hostname,
-          osName: osPlatform(),
-          osVersion: osRelease(),
+          osName: browser?.osName || osPlatform(),
+          osVersion: browser?.osVersion || osRelease(),
           freeMemory,
           totalMemory,
-          browserName: browser?.name,
-          browserVersion: browser?.version,
+          browserName: browser?.browserName,
+          browserVersion: browser?.browserVersion,
+          manufacturer: browser?.manufacturer,
+          model: browser?.model,
+          modelNumber: browser?.modelNumber,
           runtimeVersions: {
             node: process.version,
           },
@@ -284,6 +287,17 @@ export const lambdaContext = (
   };
 };
 
+export const lambdaContext = (
+  initialEvent?: Record<string, any>,
+  initialContext?: Context
+): Plugin => {
+  return lambdaContextWithUaParser(
+    parseUserAgent,
+    initialEvent,
+    initialContext
+  );
+};
+
 function isGwV2Event(
   event: Record<string, any> | undefined
 ): event is APIGatewayProxyEventV2 {

src/simple-ua-parser.ts

@@ -1,4 +1,4 @@
-import { UserAgentInfo } from './browser-context';
+import type { UserAgentInfo } from './user-agent-types';
 
 // The Bugsnag v5 API requires doing your own UA string parsing, requiring a
 // `browserName`, `browserVersion`, `osName`, `osVersion`, etc.

src/user-agent-types.ts

@@ -0,0 +1,11 @@
+export type UserAgentInfo = {
+  browserName?: string;
+  browserVersion?: string;
+  osName?: string;
+  osVersion?: string;
+  manufacturer?: string;
+  model?: string;
+  modelNumber?: string;
+};
+
+export type UserAgentParserFn = (userAgent: string) => UserAgentInfo;