Typical Type Checking Utilities

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library 7.3.0 ·javascript
verified May 27, 2026

Typical is an isomorphic, functional JavaScript library providing comprehensive type-checking utilities. Currently at version 7.3.0, it offers a stable and reliable API for validating values against common types. Key differentiators include its precise handling of numbers (distinguishing `NaN` from valid numbers, and providing checks for finite numbers), its ability to differentiate between plain object literals and other object instances, and its functional approach, making it ideal for use in array methods like `every` or `filter`. The library maintains a steady release cadence focused on stability and compatibility with modern JavaScript environments. It aims to be a foundational utility for robust data validation in both Node.js and browser contexts.

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