is-integer-string

Checks if a String Represents an Integer

Motivation

Design a library that is forgiving of user input and accepts the greatest amount of valid integers.

Features

• Designed to accept all valid representations
• Support for Numeric Separators and Commas!
• Clear Explanations When a String Fails

install

npm install is-integer-string

usage

import isIntegerString from 'is-integer-string';

const result = isIntegerString('1_234.00');
// result is true

const result = isIntegerString('-0.3');
// result is false

advanced usage

Pass in an options object with debug set to true for increased logging

const options = { debug: true };
isIntegerString('1234.567', options);

This will generate the following output:

[is-integer-string] str: 1234.567
[is-integer-string] debug: true
[is-integer-string] parts: [ '1234', '567' ]
[is-integer-string] left: 1234
[is-integer-string] right: 567
[is-integer-string] the right side of the decimal contains invalid character(s): [ '5', '6', '7' ]