microsoft / microsoft/TypeScript

Typings for navigator.connection gone since TS 4.8

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#56,962 3 comments 8 reactions 2 assignees View on GitHub

@RyanCavanaugh is already working on this.

Since Sep 19, 2026.

  • #64334 by @copilot-swe-agent — open
Bug Domain: lib.d.ts Help Wanted Needs Human Review
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Description

⚙ Compilation target

es5

⚙ Library

es6 dom dom.iterable es2016 es2017 esnext

Missing / Incorrect Definition

navigator.connection is missing after updating Typescript from 4.5 to 5.3. I checked the other versions and it seems it got removed since version 4.8. However, I couldn't find this change in the breaking changes docs.

Sample Code
const c = navigator.connection;
Documentation Link

No response

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