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4962 packages found
ES2015-compliant shim for Object.is - differentiates between -0 and +0
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 data descriptor.
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
Returns true if an object was created by the `Object` constructor, or Object.create(null).
Is this an arguments object? It's a harder question than you think.
Check if a value is a plain object
Type check values
Detect whether or not an object is a Typed Array
Returns true if the value is an object and not an array or null.
Get the native type of a value.
Determines if an object can be used as an array
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 a value is a plain object, array or function.
Test if a value is a plain object.
Effortlessly convert your JSON Object to JSON Schema, Mongoose Schema, or a Generic template for quick documentation / upstart.
- json
- schema
- object
- convert
- manipulate
- traverse
- types
- type
- is
- generate
- produce
- mongoose
- generic
- validation
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Test if a value is a string.
Test if a value is an object.
Parse, normalize and validate given semver shorthand (e.g. gulp@v3.8.10) to object.
Test if a value is object-like.