---
title: "Previewing the JavaScript/TypeScript Modernizer for VS Code Insiders"
url: https://daily.dev/posts/previewing-the-javascript-typescript-modernizer-for-vs-code-insiders-fphm7puxx
source_url: https://devblogs.microsoft.com/blog/jsts-modernizer-preview
type: article
source: "DevBlogs"
published: 2025-12-10T17:56:32.862Z
updated: 2025-12-10T17:56:55.954Z
tags: ["javascript", "github", "typescript", "vscode", "npm"]
reading_time: 8
upvotes: 50
comments: 3
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Previewing the JavaScript/TypeScript Modernizer for VS Code Insiders

**[DevBlogs](https://daily.dev/sources/devblogs)** · 8 min read · 50 upvotes · 3 comments

## Summary

Microsoft introduces the JavaScript/TypeScript Modernizer, an AI-powered VS Code extension that automates upgrading npm packages and fixing breaking changes in JS/TS projects. Available in VS Code Insiders as part of the GitHub Copilot App Modernization extension, it analyzes package.json files, proposes upgrade plans, updates dependencies to latest versions, and suggests necessary code changes through an interactive Copilot Chat experience. The tool requires VS Code Insiders, Node.js/npm, GitHub Copilot access, and enabling an experimental feature flag. Currently in preview with limitations including single-project support and potential rough edges.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://devblogs.microsoft.com/blog/jsts-modernizer-preview>

## Community discussion

Top comments from developers on daily.dev.

**@alx\_dsz** · 2 upvotes

> There’s been non-ai tools for that for a long time now. Free to tune everywhere, simple, fast and predictable.

**@rujorgensen** · 2 upvotes

> "Migrate to Azure" 😂😂😂!! The fact that we use Azure at work, is the most devastating blow to productivity, right after the corporate decision of having to use Windows ☠️. They *must* be joking 😳.

**@petecapecod** · 1 upvotes

> I guess this will help people out. I haven't had issues with this process since Gemini 2.5 Pro came out. And that's a ***while*** ago 😅
>
> Maybe people have trouble promoting the AI to do this process? 🤷🏻‍♂️

---

Tags: [#javascript](https://daily.dev/tags/javascript), [#github](https://daily.dev/tags/github), [#typescript](https://daily.dev/tags/typescript), [#vscode](https://daily.dev/tags/vscode), [#npm](https://daily.dev/tags/npm)

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