js.spec, a JavaScript implementation of clojure.spec

In plain words

js.spec is a JavaScript library that brings Clojure's spec system to JavaScript. It enables developers to define specifications for data structures and functions, then validate them at runtime. The tool is designed for JavaScript developers who want to use Clojure-inspired specification and validation patterns in their projects. It allows for declarative data descriptions and automated testing of function contracts.

written from the facts on this page · September 2026

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