time-to-botec

Benchmark sampling in different programming languages
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trim.js (1381B)

      1 var baseToString = require('./_baseToString'),
      2     baseTrim = require('./_baseTrim'),
      3     castSlice = require('./_castSlice'),
      4     charsEndIndex = require('./_charsEndIndex'),
      5     charsStartIndex = require('./_charsStartIndex'),
      6     stringToArray = require('./_stringToArray'),
      7     toString = require('./toString');
      8 
      9 /**
     10  * Removes leading and trailing whitespace or specified characters from `string`.
     11  *
     12  * @static
     13  * @memberOf _
     14  * @since 3.0.0
     15  * @category String
     16  * @param {string} [string=''] The string to trim.
     17  * @param {string} [chars=whitespace] The characters to trim.
     18  * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     19  * @returns {string} Returns the trimmed string.
     20  * @example
     21  *
     22  * _.trim('  abc  ');
     23  * // => 'abc'
     24  *
     25  * _.trim('-_-abc-_-', '_-');
     26  * // => 'abc'
     27  *
     28  * _.map(['  foo  ', '  bar  '], _.trim);
     29  * // => ['foo', 'bar']
     30  */
     31 function trim(string, chars, guard) {
     32   string = toString(string);
     33   if (string && (guard || chars === undefined)) {
     34     return baseTrim(string);
     35   }
     36   if (!string || !(chars = baseToString(chars))) {
     37     return string;
     38   }
     39   var strSymbols = stringToArray(string),
     40       chrSymbols = stringToArray(chars),
     41       start = charsStartIndex(strSymbols, chrSymbols),
     42       end = charsEndIndex(strSymbols, chrSymbols) + 1;
     43 
     44   return castSlice(strSymbols, start, end).join('');
     45 }
     46 
     47 module.exports = trim;