JavaScript

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

This is the OpenTelemetry JavaScript documentation. OpenTelemetry is an observability framework – an API, SDK, and tools that are designed to aid in the generation and collection of application telemetry data such as metrics, logs, and traces. This documentation is designed to help you understand how to get started using 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 DefinitelyType’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