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Type check values
Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
Get the native type of a value.
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
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Returns true if an object was created by the `Object` constructor, or Object.create(null).
Returns true if the value is an object and not an array or null.
A simple and composable way to validate data in JavaScript (and TypeScript).
Check if a value is a plain object
Returns true if a value exists, false if empty. Works with deeply nested values using object paths.
Test if a value is a plain object.
Test if a value is a string.
Isomorphic, functional type-checking for Javascript
Test if a value is a boolean.
Test if a value is a number.
Takes any JavaScript data type or object as an input and returns a string describing the type of the input.
Test if a value is an object.
Validate options object