Bun is a JavaScript runtime built on the JavaScriptCore engine with a native bundler, transpiler, task runner, and NPM client built-in.

Bun is built from the ground up with the WebKit/Safari JavaScriptCore engine (instead of V8 like Node). It is not a fork of Node. The libraries are built in C and Zig, ...

In its notes, Apple revealed that the security patches will fix bugs affecting WebKit, the rendering engine Safari uses, and JavaScriptCore, which runs JavaScript code on macOS and iOS devices.

The first flaw (CVE-2024-44308) impacts the JavaScriptCore framework that provides the JavaScript engine included in WebKit. Maliciously crafted web content could lead to arbitrary code execution.

JavaScriptCore. Available for: iPhone XS and later, iPad Pro 13-inch, iPad Pro 12.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, ...