is-number

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

v7.0.0 URL: https://unpkg.com/is-number@7.0.0/index.js

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cast check coerce coercion finite integer is isnan is-nan is-num is-number isnumber isfinite istype kind math nan num number numeric parseFloat parseInt test type typeof value

is-plain-object

Returns true if an object was created by the `Object` constructor, or Object.create(null).

v5.0.0 URL: https://unpkg.com/is-plain-object@5.0.0/dist/is-plain-object.js

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check is is-object isobject javascript kind kind-of object plain type typeof value

is-accessor-descriptor

Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.

v3.0.5 URL: https://unpkg.com/is-accessor-descriptor@3.0.5/index.js

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accessor check data descriptor get getter is keys object properties property set setter type valid value

is-data-descriptor

Returns true if a value has the characteristics of a valid JavaScript data descriptor.

v2.1.3 URL: https://unpkg.com/is-data-descriptor@2.1.3/index.js

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accessor check data descriptor get getter is keys object properties property set setter type valid value

is-descriptor

Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.

v3.1.1 URL: https://unpkg.com/is-descriptor@3.1.1/index.js

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accessor check data descriptor get getter is keys object properties property set setter type valid value