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TypeScript v3.9.3stable Released May 19, 2020
Impact Score: 5/10

TypeScript 3.9.3

Source available — automated, not human-reviewed

Component: typescript · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes
$ npm install --save-dev --save-exact [email protected]
📄 .MD
🔧 Bug Fixes 4
⚡ Executive Summary (TL;DR)

TypeScript v3.9.3. Source highlight: This release contains bug fixes in type-checking, APIs, emit, and editor scenarios.

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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.

🔧 Bug Fixes & Patches (4)

  • fixed issues query for Typescript v3.9.0 (Beta).
  • fixed issues query for Typescript v3.9.1 (RC).
  • fixed issues query for Typescript v3.9.2 (Final).
  • fixed issues query for Typescript v3.9.3 (patch release).
📄 View Raw Release Notes (Original Developer Log)
This release contains [bug fixes in type-checking, APIs, emit, and editor scenarios](https://github.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.9.3%22+is%3Aclosed+). For release notes, check out the [release announcement](https://devblogs.microsoft.com/typescript/announcing-typescript-3-9/). For the complete list of fixed issues, check out the * [fixed issues query for Typescript v3.9.0 (Beta)](https://github.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.9.0%22+is%3Aclosed+). * [fixed issues query for Typescript v3.9.1 (RC)](https://github.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.9.1%22+is%3Aclosed+). * [fixed issues query for Typescript v3.9.2 (Final)](https://github.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.9.2%22+is%3Aclosed+). * [fixed issues query for Typescript v3.9.3 (patch release)](https://github.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.9.3%22+is%3Aclosed+). Downloads are available on: * [npm](https://www.npmjs.com/package/typescript)
← Older Version TypeScript v3.9.2