lodash/lodash._charsleftindex/index.js

/**
 * lodash 3.0.0 (Custom Build) <https://lodash.com/>
 * Build: `lodash modern modularize exports="npm" -o ./`
 * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <https://lodash.com/license>
 */

/**
 * Used by `_.trim` and `_.trimLeft` to get the index of the first character
 * of `string` that is not found in `chars`.
 *
 * @private
 * @param {string} string The string to inspect.
 * @param {string} chars The characters to find.
 * @returns {number} Returns the index of the first character not found in `chars`.
 */
function charsLeftIndex(string, chars) {
  var index = -1,
      length = string.length;

  while (++index < length && chars.indexOf(string.charAt(index)) > -1) {}
  return index;
}

module.exports = charsLeftIndex;