PHP's decbin in TypeScript

How to use

Install via yarn add locutus and import: import { decbin } from 'locutus/php/math/decbin'.

Or with CommonJS: const { decbin } = require('locutus/php/math/decbin')

Use a bundler that supports tree-shaking so you only ship the functions you actually use. Vite, webpack, Rollup, and Parcel all handle this. For server-side use this is less of a concern.

Examples

These examples are extracted from test cases that automatically verify our functions against their native counterparts.

#	code	expected result
1	decbin(12)	'1100'
2	decbin(26)	'11010'
3	decbin('26')	'11010'

Here's what our current TypeScript equivalent to PHP's decbin looks like.

TSTypeScript JSJavaScript TSStandalone TS JSStandalone JS

Copy code

export function decbin(number: string | number): string {
  //      discuss at: https://locutus.io/php/decbin/
  // parity verified: PHP 8.3
  //     original by: Enrique Gonzalez
  //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  //     improved by: https://stackoverflow.com/questions/57803/how-to-convert-decimal-to-hex-in-javascript
  //        input by: pilus
  //        input by: nord_ua
  //       example 1: decbin(12)
  //       returns 1: '1100'
  //       example 2: decbin(26)
  //       returns 2: '11010'
  //       example 3: decbin('26')
  //       returns 3: '11010'

  let normalized = parseInt(String(number), 10)
  if (normalized < 0) {
    normalized = 0xffffffff + normalized + 1
  }
  return normalized.toString(2)
}

export function decbin(number) {
  //      discuss at: https://locutus.io/php/decbin/
  // parity verified: PHP 8.3
  //     original by: Enrique Gonzalez
  //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  //     improved by: https://stackoverflow.com/questions/57803/how-to-convert-decimal-to-hex-in-javascript
  //        input by: pilus
  //        input by: nord_ua
  //       example 1: decbin(12)
  //       returns 1: '1100'
  //       example 2: decbin(26)
  //       returns 2: '11010'
  //       example 3: decbin('26')
  //       returns 3: '11010'

  let normalized = parseInt(String(number), 10)
  if (normalized < 0) {
    normalized = 0xffffffff + normalized + 1
  }
  return normalized.toString(2)
}

Improve this function

Locutus is a community effort following The McDonald's Theory: we ship first iterations, hoping others will improve them. If you see something that could be better, we'd love your contribution.

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