[Dev Weekly #119] Grok 4.5 Changes the Game for AI Coding | TypeScript 7.0’s 12x Speed Boost | Why Bun’s Rewrite Matters

by Gabriel Quaresma on July 10, 2026 4 min
Table of Contents

[Dev Weekly #119] Grok 4.5 Changes the Game for AI Coding | TypeScript 7.0’s 12x Speed Boost | Why Bun’s Rewrite Matters

HELLO EVERYONE!!! It’s July 10th, 2026, and you are reading the 119th edition of Codeminer42’s tech news report. Let’s check out what the tech world showed us this week!

Introducing Grok 4.5

SpaceXAI’s new Grok 4.5 model is built specifically for coding and agentic tasks, showing competitive performance on software engineering benchmarks while delivering tokens at 4.2x efficiency compared to comparable models. At $2/$6 per million tokens and capable of everything from complex Rust implementations to end-to-end app building from a single prompt, it’s worth evaluating if you’re working with AI for engineering work.

What’s new in ECMAScript 2026 — by Pawel Grzybek

Pawel walks through the 8 major features approved in ES2026, from Array.fromAsync and Error.isError to Map.prototype.getOrInsert and built-in Base64 conversion for typed arrays. If you want to stay current with JavaScript’s evolution, here’s what landed this year and how to use each addition.

You shouldn’t trust Trusted Publishing

A clarification on what Trusted Publishing actually does: it’s a machine-to-machine authentication mechanism, not a signal that a package is safe or trustworthy. The post explains why PyPI deliberately avoids presenting Trusted Publishing status as a "green checkmark," and why conflating authentication with package quality is a category error that can mislead users about security.

Rewriting Bun in Rust — by Jarred Sumner

Jarred Sumner walks through why Bun is being rewritten from Zig to Rust, diving into the memory safety challenges that come with mixing garbage collection and manual memory management. You’ll learn how Claude Fable 5 helped accelerate a mechanical port of 535k lines of code, and what compiler-enforced safety guarantees Rust brings to prevent the use-after-free and double-free bugs that plagued the original implementation.

Vercel acquires Better Auth to accelerate open source auth

Vercel acquired Better Auth, the popular open source TypeScript authentication library with 4.7M+ weekly downloads. The team is joining Vercel to continue developing Better Auth and Agent Auth, which enables each agent to carry its own scoped identity and revocable authority, giving you fine-grained control over what each agent can do.

An interactive visualization that follows a single HTTP request through its entire ~200ms life

Follow a single HTTP request from DNS through TCP, TLS, the kernel, Node’s event loop, Postgres, and back in an interactive visualization. You’ll see exactly where time gets spent at each layer of the stack, which is incredibly useful for understanding performance bottlenecks in your Node applications.

Languages, Tools & Framework releases

PL/Ruby 2.5.0

PL/Ruby lets you write PostgreSQL functions, triggers, and procedures directly in Ruby while leveraging the database’s native capabilities. If you’re running PostgreSQL 11-18 and want to escape PL/pgSQL for complex logic, this procedural language handler gives you Ruby’s expressiveness with full SPI support, cursor streaming, and transaction control.

pnpm 11.10

pnpm 11.10 brings CI-friendly registry authentication via the _auth setting, new prefix and issues commands, and support for installing the upcoming Rust-based pnpm v12. The release also fixes critical bugs in dependency resolution, hardens security around global packages and deployment, and speeds up offline resolution on large workspaces.

npm v12

npm v12 is now available with significant security changes: install-time script execution, git dependencies, and remote URLs are all opt-in by default rather than automatic. If you’re managing dependencies or publishing packages, you’ll need to understand the new allowlist workflow and prepare for the deprecation of 2FA-bypass tokens for sensitive account operations starting in August.

TypeScript 7.0 — by Daniel Rosenwasser

TypeScript 7.0 is a native port built in Go that delivers 8-12x faster builds, better memory usage, and dramatically improved editor responsiveness. If you’re working on large codebases, you’ll see compilation times drop from minutes to seconds and editor diagnostics that actually keep up with your typing.

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And that’s all for this week! Wish you all a great weekend and happy coding!

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