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Stop the Software Apocalypse with Functional Programming

Lightningat JSNation 2019 · 2019-06-05..06-08· [engineering-leadership]
slides:none on file

A concrete refactor of a business workflow rewrites mutation-heavy callback code into small composable modules using pure functions and function composition. The refactor is integrated with a simple static-analysis pipeline and immutability guarantees, halving code size, eliminating three classes of runtime errors, and deploying successfully; live examples of failing and fixed code plus the build tools and lints used are shown.

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