PHP's strpbrk in TypeScript

How to use

Install via yarn add locutus and import: import { strpbrk } from 'locutus/php/strings/strpbrk'.

Or with CommonJS: const { strpbrk } = require('locutus/php/strings/strpbrk')

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	strpbrk('This is a Simple text.', 'is')	'is is a Simple text.'

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

TSTypeScript JSJavaScript TSStandalone TS JSStandalone JS

Copy code

export function strpbrk(haystack: string, charList: string): string | false {
  //      discuss at: https://locutus.io/php/strpbrk/
  // parity verified: PHP 8.3
  //     original by: Alfonso Jimenez (https://www.alfonsojimenez.com)
  //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  //      revised by: Christoph
  //     improved by: Brett Zamir (https://brett-zamir.me)
  //       example 1: strpbrk('This is a Simple text.', 'is')
  //       returns 1: 'is is a Simple text.'

  for (let i = 0, len = haystack.length; i < len; ++i) {
    if (charList.includes(haystack.charAt(i))) {
      return haystack.slice(i)
    }
  }
  return false
}

export function strpbrk(haystack, charList) {
  //      discuss at: https://locutus.io/php/strpbrk/
  // parity verified: PHP 8.3
  //     original by: Alfonso Jimenez (https://www.alfonsojimenez.com)
  //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  //      revised by: Christoph
  //     improved by: Brett Zamir (https://brett-zamir.me)
  //       example 1: strpbrk('This is a Simple text.', 'is')
  //       returns 1: 'is is a Simple text.'

  for (let i = 0, len = haystack.length; i < len; ++i) {
    if (charList.includes(haystack.charAt(i))) {
      return haystack.slice(i)
    }
  }
  return false
}

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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