Acme.BookStore.HttpApi.Host/node_modules/detect-file/index.js

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/*!
 * detect-file <https://github.com/doowb/detect-file>
 *
 * Copyright (c) 2016-2017, Brian Woodward.
 * Released under the MIT License.
 */

'use strict';

var fs = require('fs');
var path = require('path');

/**
 * Detect the given `filepath` if it exists.
 *
 * ```js
 * var res = detect('package.json');
 * console.log(res);
 * //=> "package.json"
 *
 * var res = detect('fake-file.json');
 * console.log(res)
 * //=> null
 * ```
 *
 * @param  {String} `filepath` filepath to detect.
 * @param  {Object} `options` Additional options.
 * @param  {Boolean} `options.nocase` Set this to `true` to force case-insensitive filename checks. This is useful on case sensitive file systems.
 * @return {String} Returns the detected filepath if it exists, otherwise returns `null`.
 * @api public
 */

module.exports = function detect(filepath, options) {
  if (!filepath || (typeof filepath !== 'string')) {
    return null;
  }
  if (fs.existsSync(filepath)) {
    return path.resolve(filepath);
  }

  options = options || {};
  if (options.nocase === true) {
    return nocase(filepath);
  }
  return null;
};

/**
 * Check if the filepath exists by falling back to reading in the entire directory.
 * Returns the real filepath (for case sensitive file systems) if found.
 *
 * @param  {String} `filepath` filepath to check.
 * @return {String} Returns found filepath if exists, otherwise null.
 */

function nocase(filepath) {
  filepath = path.resolve(filepath);
  var res = tryReaddir(filepath);
  if (res === null) {
    return null;