is-data-view
Is this value a JS DataView? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
is-accessor-descriptor
Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
is-data-descriptor
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
is-descriptor
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
superstruct
A simple and composable way to validate data in JavaScript (and TypeScript).