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18 packages found

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is-nan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

ljharb
published version 1.3.2, 4 years ago81 dependents licensed under $MIT
31,321,732

mdn-polyfills

MDN polyfills

michal.jezierski
published version 5.20.0, 5 years ago75 dependents licensed under $MIT
147,588

is-nan-x

ES6-compliant shim for Number.isNaN - the global isNaN returns false positives.

xotic750
published version 2.1.1, 6 years ago9 dependents licensed under $MIT
16,314

number.isnan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

ljharb
published version 1.0.0, 3 years ago0 dependents licensed under $MIT
481

what-is

A very simple "typeof" detection

tvardy
published version 0.1.2-EOL, 8 years ago0 dependents licensed under $ISC
70

checkify-utils

A lightweight utility library for common JavaScript checks, including isEmpty, isNull, isNumber, isEmptyString, isArray, and isNaN. Useful for validation and data handling.

huyhoang1217
published version 1.0.0, a month ago0 dependents licensed under $ISC
73

pp-is

Collection of methods for check

carlos-sweb
published version 1.2.3, 7 months ago5 dependents licensed under $MIT
84

robb

Simple type checker in JavaScript.

baggz
published version 0.2.1, 13 years ago2 dependents
73

typeanalyser

Provides type detection and analysis for ANY Javascript object (including custom types) in any environment, even where native operators falter.

themetaguy
published version 2.0.6, 2 years ago0 dependents licensed under $MIT
66

@outlinerisk/mdn-polyfills

MDN polyfills

outlineerik
published version 5.20.0, 6 years ago0 dependents licensed under $MIT
35

wots

A very simple "typeof" detection

tvardy
published version 0.3.2, 4 years ago0 dependents licensed under $ISC
32

robb-clone

Simple type checker in JavaScript.

veselov
published version 0.2.2, 9 years ago0 dependents
29

cheesenan

CheeseNaN is a utility library for robust number validation in JavaScript and TypeScript, including precise NaN checks, mathematical utilities, and range validations.

nugetchar
published version 0.0.9, a month ago0 dependents licensed under $MIT
34

advance-javascript

a collection of javascript prototype extensions that make your javascript coding very easy and hanndy.

developergovindgupta
published version 1.0.4, 4 years ago0 dependents licensed under $ISC
36

locore

locore is a Standard library. the library with basic JavaScript methods to improve development efficiency.

qianduanka
published version 0.0.0-beta.1, a year ago0 dependents licensed under $ISC
25

is-non-nan-num

Widely supported version of Number.isNaN. Checks whether a value is a number and that it's not NaN.

nikolaa
published version 1.0.1, 4 years ago0 dependents licensed under $ISC
11

js-util-type

A utility function to fix and extend the built-in ''typeof'' operator of JavaScript.

yanshaojing
published version 0.1.1, 7 years ago0 dependents licensed under $MIT
7

is-fin-num

Widely supported version of Number.isFinite. Checks whether a value is a finite number.

nikolaa
published version 1.0.0, 4 years ago0 dependents licensed under $ISC
6