IsNumber Packages

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

The lodash method `_.isNumber` exported as a module.

Validates if a value is a number.

Validates if a value is a number primitive, excluding NaN.

Validates if a value is a number primitive and an integer.

Validates if a value is a positive number primitive.

Validates if a value is a nonnegative number.

👺 weak but accurate type checking that returns a string representation of input's type

Validates if a value is a nonpositive number.

check if the argument is a number or not

Small utility to check variable types

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

Check does the given Javascript Object is a number.

Some missing number helper functions

A powerful JS framework to tell if a number is a number or a hotdog.

Determine whether a value is a number or not.

The ts-is-number a utility npm package that checks if a given input is a valid finite number or a string that can be converted to a valid finite number.

Check does the given Javascript Object is a number.

A small footprint is numeric value function for Node.js

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