Hi, it’s Claudio Baccigalupo. Let’s explore this week’s changes in the Rails codebase.

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Rails

This week's Rails updates include a 2x performance improvement for String#squish through RegExp optimization, stream error reporting to Rails.error API, and console reload! now resetting the executor. Generators can detect package managers from lockfiles (bun, pnpm, npm, yarn), insert_all! skips unnecessary unique index lookups for composite primary keys, and ActionController methods now explicitly declare block parameters for better static analysis. Additional changes include minitest bisect support, bundler upgrade to 4.0.4, explicit Marshal serializer for MemCacheStore, queue_classic adapter deprecation, and Ruby 4.1 stabby lambda compatibility.

Squish as fast as you can