Impact Score: 5/10
TypeScript 1.8.9
Source available — automated, not human-reviewed
Component: typescript · Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
⚡ Executive Summary (TL;DR)
TypeScript v1.8.9. Source highlight: Note: This release has the version tag of `1.8.9.0` for NuGet and npm and `1.8.29.0` for Visual Studio 2015.
Who Does This Impact? (Role-Based Analysis)
💻 Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
📊 Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
⚙️ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
📄 View Raw Release Notes (Original Developer Log)
> Note: This release has the version tag of `1.8.9.0` for NuGet and npm and `1.8.29.0` for Visual Studio 2015.
For the complete list of changes in this release, check out the fixed issues query for [TypeScript 1.8.9](https://github.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+1.8.9%22+label%3A%22fixed%22+)
Download:
- [npm](https://www.npmjs.com/package/typescript)
- [Visual Studio 2015 plugin included in Update2](https://www.visualstudio.com/en-us/news/vs2015-update2-vs.aspx)
- [NuGet package](https://www.nuget.org/packages/Microsoft.TypeScript.MSBuild/1.8.9)