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blog[js]: Add post announcing JS SDK 2.0 #6574
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Original file line number | Diff line number | Diff line change |
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--- | ||
title: Announcing the OpenTelemetry JavaScript SDK 2.0 | ||
linkTitle: OTel JS SDK 2.0 | ||
date: 2025-02-21 | ||
author: > | ||
[Jamie Danielson](https://github.com/JamieDanielson) (Honeycomb) | ||
sig: OpenTelemetry JS | ||
cSpell:ignore: Danielson | ||
--- | ||
|
||
Exciting news! | ||
[OpenTelemetry JavaScript](https://github.com/open-telemetry/opentelemetry-js) | ||
has released | ||
[SDK 2.0](https://github.com/open-telemetry/opentelemetry-js/releases)! | ||
|
||
There is a | ||
[migration guide](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md) | ||
in the repository detailing breaking changes and steps for users to take to | ||
upgrade to the latest versions. | ||
|
||
## What is JS SDK 2.x? | ||
|
||
"JS SDK 2.x" encompasses new releases of the `@opentelemetry/*` JavaScript | ||
packages published from the | ||
[`opentelemetry-js` repository](https://github.com/open-telemetry/opentelemetry-js), | ||
except the API and semantic-conventions packages. The package versions for this | ||
new major will be `>=2.0.0` for the stable and `>=0.200.0` for the unstable | ||
packages. Details on the full list of packages can be found in the | ||
[migration guide](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#what-is-js-sdk-2x). | ||
|
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## What has changed? | ||
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### Summary | ||
|
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- The **minimum supported Node.js has been raised to `^18.19.0 || >=20.6.0`**. | ||
This means that support for Node.js 14 and 16 has been dropped. | ||
- The **minimum supported TypeScript version has been raised to 5.0.4**. | ||
- The **compilation target for transpiled TypeScript has been raised to ES2022** | ||
(from ES2017). | ||
- The **public interface has changed** | ||
- for notes on migrating to 2.x / 0.200.x see | ||
[the upgrade guide](https://github.com/open-telemetry/opentelemetry-js/tree/main/doc/upgrade-to-2.x.md) | ||
|
||
### Details | ||
|
||
- [Node.js supported versions](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-nodejs-supported-versions) | ||
- [TypeScript supported versions](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-typescript-supported-versions) | ||
- [ES2022 compilation target](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-es2022-compilation-target) | ||
- [Drop `window.OTEL_*` support in browsers](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-drop-windowotel_-support-in-browsers) | ||
- [`@opentelemetry/resources` API changes](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-opentelemetryresources-api-changes) | ||
- [`@opentelemetry/core` API changes](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-opentelemetrycore-api-changes) | ||
- [Tracing SDK API changes](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-tracing-sdk-api-changes) | ||
- [`@opentelemetry/sdk-metrics` API changes](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-opentelemetrysdk-metrics-api-changes) | ||
- [`@opentelemetry/resources` changes for _implementors_ of Resource Detectors](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-opentelemetryresources-changes-for-implementors-of-resource-detectors) | ||
- [Other changes](https://github.com/open-telemetry/opentelemetry-js/blob/main/doc/upgrade-to-2.x.md#-other-changes) | ||
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## Why was this done? | ||
|
||
Some of the details for why this 2.0 was done can be found | ||
[in this issue](https://github.com/open-telemetry/opentelemetry-js/issues/4083). | ||
We knew we would gain the greatest benefit by allowing breaking changes to | ||
improve things related to: | ||
|
||
- Optimization: removing classes and namespaces to allow better minification and | ||
tree-shaking. | ||
- Better Tooling and Support: dropping old runtimes and tool versions to take | ||
advantage of enhanced ESM support and simplify documentation. | ||
- Velocity: reducing code complexity and removing deprecated fields for faster | ||
feature and maintenance work. | ||
|
||
This also begins our goal of releasing a new major release every year. | ||
|
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## How can I get involved? | ||
|
||
- Try out the | ||
[v2.0.0](https://github.com/open-telemetry/opentelemetry-js/releases/tag/v2.0.0) | ||
and | ||
[v0.200.0](https://github.com/open-telemetry/opentelemetry-js/releases/tag/experimental%2Fv0.200.0) | ||
releases and provide feedback | ||
- Review our | ||
[contributing guide](https://github.com/open-telemetry/opentelemetry-js/blob/main/CONTRIBUTING.md) | ||
for details on contributing | ||
- Attend our | ||
[SIG meetings](https://groups.google.com/a/opentelemetry.io/g/calendar-js) | ||
- Collaborate on [Slack](https://cloud-native.slack.com/archives/C01NL1GRPQR) |
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do you want to add something on how to provide feedback? I see people getting confused on how to do so. Maybe mention creation of issues, or reaching our slack/SIG. I know you added slack and sig right below, but wanted to make more clear those are the communications channels for feedback too
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The upgrade guide has this blurb, FWIW:
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Oh... I guess the subsequent few bullets include links on how to get involved.