A language-specific implementation of OpenTelemetry in JavaScript (for Node.js & the browser).

Welcome to the OpenTelemetry JavaScript documentation. This section introduces how to use OpenTelemetry with JavaScript to generate and collect telemetry data such as metrics, logs, and traces using the OpenTelemetry API and SDKs.

These pages are intended to help you get started and understand the current capabilities and status of OpenTelemetry JavaScript.

Status and Releases

The current status of the major functional components for OpenTelemetry JavaScript is as follows:

For releases, including the latest release, see Releases.

Version Support

OpenTelemetry JavaScript supports all active or maintenance LTS versions of Node.js. Previous versions of Node.js may work, but are not tested by OpenTelemetry.

OpenTelemetry JavaScript has no official supported list of browsers. It is aimed to work on currently supported versions of major browsers.

OpenTelemetry JavaScript follows DefinitelyTyped’s support policy for TypeScript which sets a support window of 2 years. Support for TypeScript versions older than 2 years will be dropped in minor releases of OpenTelemetry JavaScript.

For more details on runtime support see this overview.

Repositories

OpenTelemetry JavaScript consists of the following repositories:

• opentelemetry-js, core repository containing the core distribution API and SDK.
• opentelemetry-js-contrib, contributions that are not part of the core distribution of the API and SDK.

Help or Feedback

If you have questions about OpenTelemetry JavaScript, please reach out via GitHub Discussions or the [#otel-js] channel on CNCF Slack.

If you want to contribute to OpenTelemetry JavaScript, see the contributing instructions