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File: /var/www/tana/frontend/node_modules/locutus/php/var/is_numeric.js
'use strict';

module.exports = function is_numeric(mixedVar) {
  // eslint-disable-line camelcase
  //  discuss at: http://locutus.io/php/is_numeric/
  // original by: Kevin van Zonneveld (http://kvz.io)
  // improved by: David
  // improved by: taith
  // bugfixed by: Tim de Koning
  // bugfixed by: WebDevHobo (http://webdevhobo.blogspot.com/)
  // bugfixed by: Brett Zamir (http://brett-zamir.me)
  // bugfixed by: Denis Chenu (http://shnoulle.net)
  //   example 1: is_numeric(186.31)
  //   returns 1: true
  //   example 2: is_numeric('Kevin van Zonneveld')
  //   returns 2: false
  //   example 3: is_numeric(' +186.31e2')
  //   returns 3: true
  //   example 4: is_numeric('')
  //   returns 4: false
  //   example 5: is_numeric([])
  //   returns 5: false
  //   example 6: is_numeric('1 ')
  //   returns 6: false

  var whitespace = [' ', '\n', '\r', '\t', '\f', '\x0b', '\xa0', '\u2000', '\u2001', '\u2002', '\u2003', '\u2004', '\u2005', '\u2006', '\u2007', '\u2008', '\u2009', '\u200A', '\u200B', '\u2028', '\u2029', '\u3000'].join('');

  // @todo: Break this up using many single conditions with early returns
  return (typeof mixedVar === 'number' || typeof mixedVar === 'string' && whitespace.indexOf(mixedVar.slice(-1)) === -1) && mixedVar !== '' && !isNaN(mixedVar);
};
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