1 files changed, 177 insertions, 0 deletions
diff --git a/node_modules/@mrmlnc/readdir-enhanced/lib/normalize-options.js b/node_modules/@mrmlnc/readdir-enhanced/lib/normalize-options.js
new file mode 100644
index 0000000..66f1158
--- /dev/null
+++ b/node_modules/@mrmlnc/readdir-enhanced/lib/normalize-options.js
@@ -0,0 +1,177 @@
+'use strict';
+
+const path = require('path');
+const globToRegExp = require('glob-to-regexp');
+
+module.exports = normalizeOptions;
+
+let isWindows = /^win/.test(process.platform);
+
+/**
+ * @typedef {Object} FSFacade
+ * @property {fs.readdir} readdir
+ * @property {fs.stat} stat
+ * @property {fs.lstat} lstat
+ */
+
+/**
+ * Validates and normalizes the options argument
+ *
+ * @param {object} [options] - User-specified options, if any
+ * @param {object} internalOptions - Internal options that aren't part of the public API
+ *
+ * @param {number|boolean|function} [options.deep]
+ * The number of directories to recursively traverse. Any falsy value or negative number will
+ * default to zero, so only the top-level contents will be returned. Set to `true` or `Infinity`
+ * to traverse all subdirectories.  Or provide a function that accepts a {@link fs.Stats} object
+ * and returns a truthy value if the directory's contents should be crawled.
+ *
+ * @param {function|string|RegExp} [options.filter]
+ * A function that accepts a {@link fs.Stats} object and returns a truthy value if the data should
+ * be returned.  Or a RegExp or glob string pattern, to filter by file name.
+ *
+ * @param {string} [options.sep]
+ * The path separator to use. By default, the OS-specific separator will be used, but this can be
+ * set to a specific value to ensure consistency across platforms.
+ *
+ * @param {string} [options.basePath]
+ * The base path to prepend to each result. If empty, then all results will be relative to `dir`.
+ *
+ * @param {FSFacade} [options.fs]
+ * Synchronous or asynchronous facades for Node.js File System module
+ *
+ * @param {object} [internalOptions.facade]
+ * Synchronous or asynchronous facades for various methods, including for the Node.js File System module
+ *
+ * @param {boolean} [internalOptions.emit]
+ * Indicates whether the reader should emit "file", "directory", and "symlink" events
+ *
+ * @param {boolean} [internalOptions.stats]
+ * Indicates whether the reader should emit {@link fs.Stats} objects instead of path strings
+ *
+ * @returns {object}
+ */
+function normalizeOptions (options, internalOptions) {
+  if (options === null || options === undefined) {
+    options = {};
+  }
+  else if (typeof options !== 'object') {
+    throw new TypeError('options must be an object');
+  }
+
+  let recurseDepth, recurseFn, recurseRegExp, recurseGlob, deep = options.deep;
+  if (deep === null || deep === undefined) {
+    recurseDepth = 0;
+  }
+  else if (typeof deep === 'boolean') {
+    recurseDepth = deep ? Infinity : 0;
+  }
+  else if (typeof deep === 'number') {
+    if (deep < 0 || isNaN(deep)) {
+      throw new Error('options.deep must be a positive number');
+    }
+    else if (Math.floor(deep) !== deep) {
+      throw new Error('options.deep must be an integer');
+    }
+    else {
+      recurseDepth = deep;
+    }
+  }
+  else if (typeof deep === 'function') {
+    recurseDepth = Infinity;
+    recurseFn = deep;
+  }
+  else if (deep instanceof RegExp) {
+    recurseDepth = Infinity;
+    recurseRegExp = deep;
+  }
+  else if (typeof deep === 'string' && deep.length > 0) {
+    recurseDepth = Infinity;
+    recurseGlob = globToRegExp(deep, { extended: true, globstar: true });
+  }
+  else {
+    throw new TypeError('options.deep must be a boolean, number, function, regular expression, or glob pattern');
+  }
+
+  let filterFn, filterRegExp, filterGlob, filter = options.filter;
+  if (filter !== null && filter !== undefined) {
+    if (typeof filter === 'function') {
+      filterFn = filter;
+    }
+    else if (filter instanceof RegExp) {
+      filterRegExp = filter;
+    }
+    else if (typeof filter === 'string' && filter.length > 0) {
+      filterGlob = globToRegExp(filter, { extended: true, globstar: true });
+    }
+    else {
+      throw new TypeError('options.filter must be a function, regular expression, or glob pattern');
+    }
+  }
+
+  let sep = options.sep;
+  if (sep === null || sep === undefined) {
+    sep = path.sep;
+  }
+  else if (typeof sep !== 'string') {
+    throw new TypeError('options.sep must be a string');
+  }
+
+  let basePath = options.basePath;
+  if (basePath === null || basePath === undefined) {
+    basePath = '';
+  }
+  else if (typeof basePath === 'string') {
+    // Append a path separator to the basePath, if necessary
+    if (basePath && basePath.substr(-1) !== sep) {
+      basePath += sep;
+    }
+  }
+  else {
+    throw new TypeError('options.basePath must be a string');
+  }
+
+  // Convert the basePath to POSIX (forward slashes)
+  // so that glob pattern matching works consistently, even on Windows
+  let posixBasePath = basePath;
+  if (posixBasePath && sep !== '/') {
+    posixBasePath = posixBasePath.replace(new RegExp('\\' + sep, 'g'), '/');
+
+    /* istanbul ignore if */
+    if (isWindows) {
+      // Convert Windows root paths (C:\) and UNCs (\\) to POSIX root paths
+      posixBasePath = posixBasePath.replace(/^([a-zA-Z]\:\/|\/\/)/, '/');
+    }
+  }
+
+  // Determine which facade methods to use
+  let facade;
+  if (options.fs === null || options.fs === undefined) {
+    // The user didn't provide their own facades, so use our internal ones
+    facade = internalOptions.facade;
+  }
+  else if (typeof options.fs === 'object') {
+    // Merge the internal facade methods with the user-provided `fs` facades
+    facade = Object.assign({}, internalOptions.facade);
+    facade.fs = Object.assign({}, internalOptions.facade.fs, options.fs);
+  }
+  else {
+    throw new TypeError('options.fs must be an object');
+  }
+
+  return {
+    recurseDepth,
+    recurseFn,
+    recurseRegExp,
+    recurseGlob,
+    filterFn,
+    filterRegExp,
+    filterGlob,
+    sep,
+    basePath,
+    posixBasePath,
+    facade,
+    emit: !!internalOptions.emit,
+    stats: !!internalOptions.stats,
+  };
+}