This content originally appeared on DEV Community and was authored by Ramu Narasinga
In this article, we review JSZip library in Chef codebase. We will look at:
What is Chef?
JSZip usage in Chef codebase
What is JSZip?
I study patterns used in an open source project found on Github Trending. For this week, I reviewed some parts of Chef codebase and wrote this article.
What is Chef?
Chef is open-source, check out the GitHub repo here.
This is the only AI app builder that knows backend. By applying Convex primitives directly to your code generation, your apps are automatically equipped with optimal backend patterns and best practices. Your full-stack apps come with a built-in database, zero config auth, file uploads, real-time UIs, and background workflows. If you want to check out the secret sauce that powers Chef, you can view or download the system prompt here.
As mentioned above, Chef’s capabilities are enabled by being built on top of Convex, the open-source reactive database designed to make life easy for web app developers. The “magic” in Chef is just the fact that it’s using Convex’s APIs, which are an ideal fit for codegen.
This project is a fork of the stable branch of bolt.diy.
Learn more about Chef.
JSZip usage in Chef codebase
In cli.ts, you will find the following code:
const zipBuffer = await download.createReadStream().then((stream) => {
const chunks: Uint8Array[] = [];
return new Promise<Buffer>((resolve, reject) => {
stream.on('data', (chunk) => chunks.push(chunk));
stream.on('end', () => resolve(Buffer.concat(chunks)));
stream.on('error', reject);
});
});
const zip = await JSZip.loadAsync(zipBuffer);
What does loadAsync do? well, the name itself indicates that it loads the zip buffer asynchronously. Let’s find out what is JSZip.
What is JSZip?
JSZip is a library for creating, reading and editing .zip files with JavaScript, with a lovely and simple API.
See https://stuk.github.io/jszip for all the documentation.
const zip = new JSZip();
zip.file("Hello.txt", "Hello World\n");
const img = zip.folder("images");
img.file("smile.gif", imgData, {base64: true});
zip.generateAsync({type:"blob"}).then(function(content) {
// see FileSaver.js
saveAs(content, "example.zip");
});
/*
Results in a zip containing
Hello.txt
images/
smile.gif
*/
About me:
Hey, my name is Ramu Narasinga. I study codebase architecture in large open-source projects.
Email: ramu.narasinga@gmail.com
I spent 200+ hours analyzing Supabase, shadcn/ui, LobeChat. Found the patterns that separate AI slop from production code. Stop refactoring AI slop. Start with proven patterns. Check out production-grade projects at thinkthroo.com
References:
This content originally appeared on DEV Community and was authored by Ramu Narasinga
Ramu Narasinga | Sciencx (2025-11-07T15:30:00+00:00) JSZip library in Chef codebase.. Retrieved from https://www.scien.cx/2025/11/07/jszip-library-in-chef-codebase-2/
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.