# Deno v1.6.0 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v1.6.0
- **Released:** Dec 08, 2020
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/deno/updates/v1.6.0/

## Executive Summary (TL;DR)
Deno v1.6.0. Source highlight: BREAKING: Make "isolatedModules" setting non-configurable (#8482)

## Breaking Changes & Deprecations
- - BREAKING: Make "isolatedModules" setting non-configurable (#8482)
- - BREAKING(std/bytes): Adjust APIs based on std-wg discussion (#8612)

## New Features
- feat: Add mvp language server (#8515, #8651)
- feat: deno compile (#8539, #8563, #8581)
- feat: Update to TypeScript 4.1 (#7573)
- feat: EventTarget signal support (#8616)
- feat: Add canary support to upgrade subcommand (#8476)
- feat(unstable): Add cbreak option to Deno.setRaw (#8383)

## Improvements
- perf: Use minimal op with performance.now() (#8619)

## Bug Fixes
- fix: "onload" event order (#8376)
- fix: Add file URL support for Deno.readLink (#8423)
- fix: Add hygiene pass to transpile pipeline (#8586)
- fix: Require allow-write permissions for unixpackets datagrams & unix socket
- fix: Highlight `async` and `of` in REPL (#8569)
- fix: Make output of deno info --json deterministic (#8483)