Bun 1.4 发布，新增 WebView 等功能

A shot-scraper-style JSON API on Bun 1.4's new Bun.WebView

Research: A shot-scraper-style JSON API on Bun 1.4's new Bun.WebView Today saw the long awaited release of Bun 1.4 , the first stable version since the infamous Rust rewrite a few months ago . Interestingly, the Rust rewrite was downplayed in the release notes, which introduced a bewildering array of new features and claimed 2,900 additional bug fixes: Bun 1.4 adds +1,517 tests from the Node.js test suite - our biggest jump in Node.js compatibility since Bun 1.0. Bun v1.4 also fixes over 2,900 issues. It reduces idle CPU usage by 5x, reduces memory usage by up to 35%, and starts 50% faster on Linux. It adds Bun.Image , Bun.WebView , Bun.markdown , Bun.cron() , Bun.Terminal , bun run --parallel , bun test --parallel , bun audit fix , bun dedupe , and bun prune . And it rewrites Bun from Zig to Rust. Of these the one that most caught my eye was Bun.WebView , which adds first class support for browser automation to Bun core using either macOS WebKit or control of a local Chromium process via the Chrome DevTools Protocol (CDP). I had Claude Code for web build a prototype of a web API providing the ability to load a web page and then execute JavaScript against it, inspired by my shot-scraper javascript CLI tool - partly to see how much RAM would be needed by such a service. Here's that TypeScript server implementation , which appears to need a 192MB-256MB container to run a full Chrome against complex web pages - tested using cgroups. Tags: browsers , javascript , ai , rust , typescript , generative-ai , llms , coding-agents , bun