Acme.BookStore.HttpApi.Host/node_modules/split-string/index.js

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/*!
 * split-string <https://github.com/jonschlinkert/split-string>
 *
 * Copyright (c) 2015-2017, Jon Schlinkert.
 * Released under the MIT License.
 */

'use strict';

var extend = require('extend-shallow');

module.exports = function(str, options, fn) {
  if (typeof str !== 'string') {
    throw new TypeError('expected a string');
  }

  if (typeof options === 'function') {
    fn = options;
    options = null;
  }

  // allow separator to be defined as a string
  if (typeof options === 'string') {
    options = { sep: options };
  }

  var opts = extend({sep: '.'}, options);
  var quotes = opts.quotes || ['"', "'", '`'];
  var brackets;

  if (opts.brackets === true) {
    brackets = {
      '<': '>',
      '(': ')',
      '[': ']',
      '{': '}'
    };
  } else if (opts.brackets) {
    brackets = opts.brackets;
  }

  var tokens = [];
  var stack = [];
  var arr = [''];
  var sep = opts.sep;
  var len = str.length;
  var idx = -1;
  var closeIdx;

  function expected() {
    if (brackets && stack.length) {
      return brackets[stack[stack.length - 1]];
    }
  }

  while (++idx < len) {
    var ch = str[idx];
    var next = str[idx + 1];
    var tok = { val: ch, idx: idx, arr: arr, str: str };
    tokens.push(tok);