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typeof
Node module. typeOf('a string') == 'string', typeOf([]) == 'array', etc.. Also supports named functions detections aka javascript classes
typeof type
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
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
has-symbols
Determine if the JS environment has Symbol support. Supports spec, or shams.
Symbol symbols typeof sham polyfill native core-js ES6
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
type-detect
Improved typeof detection for node.js and the browser.
type typeof types
has-bigints
Determine if the JS environment has BigInt support.
BigInt bigints typeof ES2020
@sindresorhus/is
Type check values
type types is check checking validate validation utility util typeof instanceof object assert assertion
is-type-of
complete type checking for node
typeof checker type is
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
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
component-type
Type assertions aka less-broken `typeof`
typeof type types check utility
is-primitive
Returns `true` if the value is a primitive.
boolean check is number primitive string symbol type typeof util
craydent-typeof
Node module for type checking
craydent es6 jquery library sugar typeof utilities
ow
Function argument validation for humans
type types check checking guard guards assert assertion predicate predicates is validate validation utility
is-number-like
Checks whether provided parameter looks like a number
is-number typeof number-like
@stdlib/utils-constructor-name
Determine the name of a value's constructor.
stdlib stdutils stdutil utilities utility utils util type typeof class constructor ctor name instanceof
is-lite
A tiny javascript type testing tool
type check assertion validation test typeguard typeof instanceof
@stdlib/assert-is-object-like
Test if a value is object-like.
stdlib stdassert assertion assert utilities utility utils util type typeof object obj object-like is

Search npm for packages to use with Deno

typeof

is-plain-object

isobject

kind-of

has-symbols

is-number

type-detect

has-bigints

@sindresorhus/is

is-type-of

koalas

typechecker

component-type

is-primitive

craydent-typeof

ow

is-number-like

@stdlib/utils-constructor-name

is-lite

@stdlib/assert-is-object-like