Accelerating Large-Scale Test Migration with LLMs

by: Charles Covey-BrandtAirbnb recently completed our first large-scale, LLM-driven code migration, updating nearly 3.5K React component test files from Enzyme to use React Testing Library (RTL) instead. We’d originally estimated this would take 1.5 years of engineering time to do by hand, but — using a combination of frontier models and robust automation — we finished the entire migration in just 6 weeks.In this blog post, we’ll highlight the unique challenges we faced migrating from Enzyme to ...

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