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kind-of
Get the native type of a value.
arguments array boolean check date function is is-type is-type-of kind kind-of number object of
is-number
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
cast check coerce coercion finite integer is isnan is-nan is-num is-number isnumber isfinite istype
is-plain-object
Returns true if an object was created by the `Object` constructor, or Object.create(null).
check is is-object isobject javascript kind kind-of object plain type typeof value
isobject
Returns true if the value is an object and not an array or null.
check is is-object isobject kind kind-of kindof native object type typeof value
@sindresorhus/is
Type check values
type types is check checking validate validation utility util typeof instanceof object assert assertion
p-is-promise
Check if something is a promise
promise is detect check kind type thenable es2015 async await promises bluebird
koalas
Coalesce for JavaScript. Returns the first value that is not undefined or null.
check isnull kind koala koalas null type type-of typeof undefined util utility utils value
inspect-with-kind
`util.inspect` with additional type information
inspect format beautify clarify stringify type kind append additional info check
typechecker
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
array assert assertion async async function async-function asyncFunction bool boolean browser check check-type checking class
typy
Minimal JavaScript type checking library
type types is check checking validate validation utility util typeof instanceof object assert assertion
kindof
A proper typeof that works with primitives, built-in value objects and those from other execution contexts.
kind tostring type typeof
@esm2cjs/is
Type check values. This is a fork of sindresorhus/is, but with CommonJS support.
type types is check checking validate validation utility util typeof instanceof object assert assertion
precise-typeof
Better 'typeof'. Detects real type of the objects like 'Array()', 'new Number(1)', 'new Boolean(true)', etc.
precise type typeof kind kindof object array pojo instance instanceof plain object
@marionebl/is
Type check values: `is.string('🦄') //=> true`
type types is check checking validate validation utility util typeof instanceof object assert assertion
@stdlib/ndarray-base-assert-is-same-kind-data-type-cast
Determine if an ndarray data type can be safely cast to, or is of the same kind as, another ndarray data type.
stdlib stdtypes types base ndarray casting safe cast kind promotion test assert check validate
mout-lang-type
An extension to the `mout/lang` utilities
AMD bugfix camelCase check checks CJS CommonJS ECMAScript ES extension fix instanceOf isKind isPrimitive
kindly
A thin wrapper for fs to group files by type
fs files readdir type kind
@alwatr/is-number
A simple utility to Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123.
is-number isnumber isnan finite isfinite is-nan is-num integer is kind math nan num number
kind
A node.js type detection and comparison library
kind type
ts-type-detector
Takes any JavaScript data type or object as an input and returns a string describing the type of the input.
arguments array boolean check date function is is-type is-type-of kind kind-of number object of