PHP's assert_options in JavaScript

How to use

You you can install via yarn add locutus and require this function via const assert_options = require('locutus/php/info/assert_options').

It is important to use a bundler that supports tree-shaking so that you only ship the functions that you actually use to your browser, instead of all of Locutus, which is massive. Examples are: Parcel, webpack, or rollup.js. For server-side use this is typically less of a concern.

Examples

Please note that these examples are distilled from test cases that automatically verify our functions still work correctly. This could explain some quirky ones.

#	code	expected result
1	assert_options('ASSERT_CALLBACK')	null

Here’s what our current JavaScript equivalent to PHP's assert_options looks like.

module.exports = function assert_options(what, value) {
  //  discuss at: https://locutus.io/php/assert_options/
  // original by: Brett Zamir (https://brett-zamir.me)
  //   example 1: assert_options('ASSERT_CALLBACK')
  //   returns 1: null

  let iniKey, defaultVal
  switch (what) {
    case 'ASSERT_ACTIVE':
      iniKey = 'assert.active'
      defaultVal = 1
      break
    case 'ASSERT_WARNING':
      iniKey = 'assert.warning'
      defaultVal = 1
      var msg = 'We have not yet implemented warnings for us to throw '
      msg += 'in JavaScript (assert_options())'
      throw new Error(msg)
    case 'ASSERT_BAIL':
      iniKey = 'assert.bail'
      defaultVal = 0
      break
    case 'ASSERT_QUIET_EVAL':
      iniKey = 'assert.quiet_eval'
      defaultVal = 0
      break
    case 'ASSERT_CALLBACK':
      iniKey = 'assert.callback'
      defaultVal = null
      break
    default:
      throw new Error('Improper type for assert_options()')
  }

  // I presume this is to be the most recent value, instead of the default value
  const iniVal = (typeof require !== 'undefined' ? require('../info/ini_get')(iniKey) : undefined) || defaultVal

  return iniVal
}

A community effort

Not unlike Wikipedia, Locutus is an ongoing community effort. Our philosophy follows The McDonald’s Theory. This means that we assimilate first iterations with imperfections, hoping for others to take issue with-and improve them. This unorthodox approach has worked very well to foster fun and fruitful collaboration, but please be reminded to use our creations at your own risk. THE SOFTWARE IS PROVIDED "AS IS" has never been more true than for Locutus.

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