npm-string-to-number's Introduction

string-to-number

This is an npm module for converting string representations of numbers to numbers.

Examples

var string_to_number = require('string-to-number');
var s2n = new string_to_number();

// Simple example
s2n.convert('seven hundred');
// Output: 700

// Works with negatives
s2n.convert('negative six hundred eighty three');
// Output: -683

// Works with dashes
s2n.convert('three-hundred-thousand');
// Output: 300000

// Works with ands
s2n.convert('three-hundred thousand and forty two');
// Output: 300042

// A bigger number
s2n.convert('seven hundred and ninety nine billion five hundred thirty two million six hundred thousand and seven');
// Output: 799532600007

// Invlaid numbers return undefined
s2n.convert('ten gazillion');
// Output: undefined

// Only supports whole numbers
s2n.convert('ten point two');
// Output: undefined

// Also invalid
s2n.convert('half a million');
// Output: undefined

Download

Install using Node Package Manager (npm):

npm install string-to-number

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npm-string-to-number's Issues

Unable to process integers

I'm currently using string-to-number in a BDD project to manage numbers spelt out in Gherkin, such as Given I attempt to log in with invalid credentials three times and Given I attempt to log in with invalid credentials 3 times.

On the second example the convert() function will return undefined instead of the integer 3.

The reason I'm using the string-to-number library is to manage scenarios that will use a mixture of digit and string representations of numbers coming from non-technical people.

Is it possible to try and use parseInt() or parseFloat() before to manage this use case?

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