Acme.BookStore.HttpApi.Host/node_modules/fill-range/index.js

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/*!
 * fill-range <https://github.com/jonschlinkert/fill-range>
 *
 * Copyright (c) 2014-2015, 2017, Jon Schlinkert.
 * Released under the MIT License.
 */

'use strict';

var util = require('util');
var isNumber = require('is-number');
var extend = require('extend-shallow');
var repeat = require('repeat-string');
var toRegex = require('to-regex-range');

/**
 * Return a range of numbers or letters.
 *
 * @param  {String} `start` Start of the range
 * @param  {String} `stop` End of the range
 * @param  {String} `step` Increment or decrement to use.
 * @param  {Function} `fn` Custom function to modify each element in the range.
 * @return {Array}
 */

function fillRange(start, stop, step, options) {
  if (typeof start === 'undefined') {
    return [];
  }

  if (typeof stop === 'undefined' || start === stop) {
    // special case, for handling negative zero
    var isString = typeof start === 'string';
    if (isNumber(start) && !toNumber(start)) {
      return [isString ? '0' : 0];
    }
    return [start];
  }

  if (typeof step !== 'number' && typeof step !== 'string') {
    options = step;
    step = undefined;
  }

  if (typeof options === 'function') {
    options = { transform: options };
  }

  var opts = extend({step: step}, options);
  if (opts.step && !isValidNumber(opts.step)) {
    if (opts.strictRanges === true) {
      throw new TypeError('expected options.step to be a number');
    }
    return [];
  }

  opts.isNumber = isValidNumber(start) && isValidNumber(stop);
  if (!opts.isNumber && !isValid(start, stop)) {
    if (opts.strictRanges === true) {
      throw new RangeError('invalid range arguments: ' + util.inspect([start, stop]));