update

node_modules/lazy-cache/index.js

@@ -0,0 +1,67 @@
+'use strict';
+
+/**
+ * Cache results of the first function call to ensure only calling once.
+ *
+ * ```js
+ * var utils = require('lazy-cache')(require);
+ * // cache the call to `require('ansi-yellow')`
+ * utils('ansi-yellow', 'yellow');
+ * // use `ansi-yellow`
+ * console.log(utils.yellow('this is yellow'));
+ * ```
+ *
+ * @param  {Function} `fn` Function that will be called only once.
+ * @return {Function} Function that can be called to get the cached function
+ * @api public
+ */
+
+function lazyCache(fn) {
+  var cache = {};
+  var proxy = function(mod, name) {
+    name = name || camelcase(mod);
+
+    // check both boolean and string in case `process.env` cases to string
+    if (process.env.UNLAZY === 'true' || process.env.UNLAZY === true || process.env.TRAVIS) {
+      cache[name] = fn(mod);
+    }
+
+    Object.defineProperty(proxy, name, {
+      enumerable: true,
+      configurable: true,
+      get: getter
+    });
+
+    function getter() {
+      if (cache.hasOwnProperty(name)) {
+        return cache[name];
+      }
+      return (cache[name] = fn(mod));
+    }
+    return getter;
+  };
+  return proxy;
+}
+
+/**
+ * Used to camelcase the name to be stored on the `lazy` object.
+ *
+ * @param  {String} `str` String containing `_`, `.`, `-` or whitespace that will be camelcased.
+ * @return {String} camelcased string.
+ */
+
+function camelcase(str) {
+  if (str.length === 1) {
+    return str.toLowerCase();
+  }
+  str = str.replace(/^[\W_]+|[\W_]+$/g, '').toLowerCase();
+  return str.replace(/[\W_]+(\w|$)/g, function(_, ch) {
+    return ch.toUpperCase();
+  });
+}
+
+/**
+ * Expose `lazyCache`
+ */
+
+module.exports = lazyCache;