es-to-primitive

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

v1.2.1 URL: https://unpkg.com/es-to-primitive@1.2.1/index.js

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primitive abstract ecmascript es5 es6 es2015 toPrimitive coerce type object string number boolean symbol null undefined

kind-of

Get the native type of a value.

v6.0.3 URL: https://unpkg.com/kind-of@6.0.3/index.js

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arguments array boolean check date function is is-type is-type-of kind kind-of number object of regexp string test type type-of typeof types

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

boolbase

two functions: One that returns true, one that returns false

v1.0.0 URL: https://unpkg.com/boolbase@1.0.0/index.js

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boolean function

is-boolean-object

Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

v1.1.2 URL: https://unpkg.com/is-boolean-object@1.1.2/index.js

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Boolean ES6 toStringTag @@toStringTag Boolean object true false is-boolean