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

decimal.js

An arbitrary-precision Decimal type for JavaScript.

v10.4.3 URL: https://unpkg.com/decimal.js@10.4.3/decimal.js

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arbitrary precision arithmetic big number decimal float biginteger bigdecimal bignumber bigint bignum

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

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

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