typical

Isomorphic, functional type-checking for Javascript

v7.3.0 URL: https://unpkg.com/typical@7.3.0/index.js

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type checking check value valid is detect number object plainobject array like defined string boolean function promise iterable class primitive isstring isclass isiterable isdefined isobject isomorphic async is-async es6 es2015

@stdlib/utils-native-class

Determine the specification defined classification of an object.

v0.2.2 URL: https://unpkg.com/@stdlib/utils-native-class@0.2.2/lib/index.js

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stdlib stdutils stdutil utilities utility utils util type typeof native class classification specification spec ecmascript ecma internal tostring object built-in builtin is istype check

gundam5

A robust micro library for type checking. Defers to constructs' internal `[[Class]]` property rather than duck typing for excellent type detection and to avoid triggering false positives.

v1.1.4 URL: https://unpkg.com/gundam5@1.1.4/izzy.js

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is type typeof type check string number defined array object boolean primitive element class duck

izzy

A robust micro library for type checking. Defers to constructs' internal `[[Class]]` property rather than duck typing for excellent type detection and to avoid triggering false positives.

v1.0.1 URL: https://unpkg.com/izzy@1.0.1/izzy.js

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is type typeof type check string number defined array object boolean primitive element class duck

elv

Elvis operator functionality for JavaScript.

v2.2.0 URL: https://unpkg.com/elv@2.2.0/lib/index.js

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elvis existential is defined coalesce truthy exists