# Deno v1.25.4 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v1.25.4
- **Released:** Sep 22, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v1.25.4/

## Executive Summary (TL;DR)
Deno v1.25.4. Source highlight: feat(unstable/npm): add flag for creating and resolving npm packages to a

## New Features
- feat(unstable/npm): add flag for creating and resolving npm packages to a
- feat(unstable/npm): add support for --reload=npm: and --reload=npm:<package>
- feat(internal/ops): Automatic fast ops creation (#15527)

## Improvements
- perf(cli): avoid `canonicalize_path` if config file does not exist (#15957)
- perf(cli): avoid `clap::App::clone` (#15951)
- perf(cli): use -O3 instead of -Oz (#15952)
- perf(core): use single ObjectTemplate for ops in `initialize_ops` (#15959)
- perf(ext/console): avoid `wrapConsole` when not inspecting (#15931)
- perf(web): optimize encodeInto() (#15922)

## Bug Fixes
- fix(compile): keep non-exe extension in output name on Windows (#15994)
- fix(doc): deno doc should parse modules if they haven't been parsed before
- fix(ext/node): fix builtin module module (#15904)
- fix(ext/webgpu): make GPUDevice.features SetLike (#15853)
- fix(flash): panic if response if undefined (#15964)
- fix(runtime): better error message with Deno.env.get/set (#15966)