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node_modules/fragment-cache/index.js

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+/*!
+ * fragment-cache <https://github.com/jonschlinkert/fragment-cache>
+ *
+ * Copyright (c) 2016-2017, Jon Schlinkert.
+ * Released under the MIT License.
+ */
+
+'use strict';
+
+var MapCache = require('map-cache');
+
+/**
+ * Create a new `FragmentCache` with an optional object to use for `caches`.
+ *
+ * ```js
+ * var fragment = new FragmentCache();
+ * ```
+ * @name FragmentCache
+ * @param {String} `cacheName`
+ * @return {Object} Returns the [map-cache][] instance.
+ * @api public
+ */
+
+function FragmentCache(caches) {
+  this.caches = caches || {};
+}
+
+/**
+ * Prototype
+ */
+
+FragmentCache.prototype = {
+
+  /**
+   * Get cache `name` from the `fragment.caches` object. Creates a new
+   * `MapCache` if it doesn't already exist.
+   *
+   * ```js
+   * var cache = fragment.cache('files');
+   * console.log(fragment.caches.hasOwnProperty('files'));
+   * //=> true
+   * ```
+   * @name .cache
+   * @param {String} `cacheName`
+   * @return {Object} Returns the [map-cache][] instance.
+   * @api public
+   */
+
+  cache: function(cacheName) {
+    return this.caches[cacheName] || (this.caches[cacheName] = new MapCache());
+  },
+
+  /**
+   * Set a value for property `key` on cache `name`
+   *
+   * ```js
+   * fragment.set('files', 'somefile.js', new File({path: 'somefile.js'}));
+   * ```
+   * @name .set
+   * @param {String} `name`
+   * @param {String} `key` Property name to set
+   * @param {any} `val` The value of `key`
+   * @return {Object} The cache instance for chaining
+   * @api public
+   */
+
+  set: function(cacheName, key, val) {
+    var cache = this.cache(cacheName);
+    cache.set(key, val);
+    return cache;
+  },
+
+  /**
+   * Returns true if a non-undefined value is set for `key` on fragment cache `name`.
+   *
+   * ```js
+   * var cache = fragment.cache('files');
+   * cache.set('somefile.js');
+   *
+   * console.log(cache.has('somefile.js'));
+   * //=> true
+   *
+   * console.log(cache.has('some-other-file.js'));
+   * //=> false
+   * ```
+   * @name .has
+   * @param {String} `name` Cache name
+   * @param {String} `key` Optionally specify a property to check for on cache `name`
+   * @return {Boolean}
+   * @api public
+   */
+
+  has: function(cacheName, key) {
+    return typeof this.get(cacheName, key) !== 'undefined';
+  },
+
+  /**
+   * Get `name`, or if specified, the value of `key`. Invokes the [cache]() method,
+   * so that cache `name` will be created it doesn't already exist. If `key` is not passed,
+   * the entire cache (`name`) is returned.
+   *
+   * ```js
+   * var Vinyl = require('vinyl');
+   * var cache = fragment.cache('files');
+   * cache.set('somefile.js', new Vinyl({path: 'somefile.js'}));
+   * console.log(cache.get('somefile.js'));
+   * //=> <File "somefile.js">
+   * ```
+   * @name .get
+   * @param {String} `name`
+   * @return {Object} Returns cache `name`, or the value of `key` if specified
+   * @api public
+   */
+
+  get: function(name, key) {
+    var cache = this.cache(name);
+    if (typeof key === 'string') {
+      return cache.get(key);
+    }
+    return cache;
+  }
+};
+
+/**
+ * Expose `FragmentCache`
+ */
+
+exports = module.exports = FragmentCache;