node_modules/locutus/php/strings/strripos.js


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'use strict';

module.exports = function strripos(haystack, needle, offset) {
  //  discuss at: http://locutus.io/php/strripos/
  // original by: Kevin van Zonneveld (http://kvz.io)
  // bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
  // bugfixed by: Brett Zamir (http://brett-zamir.me)
  //    input by: saulius
  //   example 1: strripos('Kevin van Zonneveld', 'E')
  //   returns 1: 16

  haystack = (haystack + '').toLowerCase();
  needle = (needle + '').toLowerCase();

  var i = -1;
  if (offset) {
    i = (haystack + '').slice(offset).lastIndexOf(needle); // strrpos' offset indicates starting point of range till end,
    // while lastIndexOf's optional 2nd argument indicates ending point of range from the beginning
    if (i !== -1) {
      i += offset;
    }
  } else {
    i = (haystack + '').lastIndexOf(needle);
  }
  return i >= 0 ? i : false;
};
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