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Javascript notifier for Bugsnag. Monitor and report JavaScript errors.
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Bugsnag logo

Universal JavaScript error reporting.

Automatically detect JavaScript errors in the browser, Node.js and Expo, with plugins for React, Vue, Angular, Express, Restify and Koa. Get cross-platform error detection for handled and unhandled errors with real-time error alerts and detailed diagnostic reports.

Learn more about JavaScript error reporting from Bugsnag.

This is a monorepo (managed with Lerna) containing our universal error reporting client @bugsnag/js and our Expo client @bugsnag/expo, along with:

Etc. See packages for a full list of contents.

Getting started

  1. Create a Bugsnag account
  2. Complete the instructions in the integration guide
  3. Report handled exceptions using bugsnagClient.notify()
  4. Customize your integration using the configuration options

Integrating with frameworks

Use the following plugins and guides to integrate Bugsnag with various frameworks.


Framework Bugsnag plugin Documentation
Vue @bugsnag/plugin-vue Vue docs
React @bugsnag/plugin-react React docs
Angular @bugsnag/plugin-angular Angular docs


Framework Bugsnag plugin Documentation
Koa @bugsnag/plugin-koa Koa docs
Express @bugsnag/plugin-express Express docs
Restify @bugsnag/plugin-restify Restify docs



Most updates to this repo will be made by Bugsnag employees. We are unable to accommodate significant external PRs such as features additions or any large refactoring, however minor fixes are welcome. See contributing for more information.

Development quick start

# Clone the repository
git clone
cd bugsnag-js

# Install top-level dependencies
npm i

# Bootstrap all of the packages
npm run bootstrap

# Build the standalone notifiers and plugins
npm run build

# Run the unit tests
npm run test:unit

# Run the linter
npm run test:lint

# Run the typescript compatibility tests
npm run test:types

See contributing for more information.


All packages in this repository are released under the MIT License.

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