# TypeScript v4.3.4 — Release & Upgrade Intelligence
- **Product:** TypeScript (https://typescriptlang.org)
- **Version:** v4.3.4
- **Released:** Jun 17, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/typescript/updates/v4.3.4/

## Executive Summary (TL;DR)
TypeScript v4.3.4. Source highlight: adds an optional `getCustomTransformers` method to the `SolutionBuilderHost*` APIs

## New Features
- adds an optional `getCustomTransformers` method to the `SolutionBuilderHost*` APIs

## Upgrade Command
```bash
npm install --save-dev --save-exact typescript@4.3.4
```