Is-number Packages

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

Checks whether provided parameter looks like a number

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

This is a JavaScript utility. It returns `true` if the value is a string number written in fixed notation and in decimal base.

Checks whether a value is a finite number or not.

A native module for effectively validating if a value is type Number.

EcmaScript library to check value is valid number or not 🙌

Check does the given Javascript Object is a number.

This is a JavaScript utility. It returns `true` if the value is a number or plain number string (not in scientific exponential notation or hexadecimal notation for instance).

Check if node's require() is working!

Returns true if the value is a number. comprehensive tests.Study from jonschlinkert/is-number

Extended functions for defining and converting data types.

Checks whether a value is an integer or not.

Check if the parameter is number

Type check in TypeScript

ESNext type checker.

A JavaScript/Typescript library for fast type checking. Check if a given value is a string, number, object, ...

Simple and light-weight JavaScript type checker that brings convenience!

An utility to check if a value is a number (allowing string numbers optionally).

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.