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express-server/node_modules/async-each/index.js

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+// async-each MIT license (by Paul Miller from http://paulmillr.com).
+(function(globals) {
+  'use strict';
+  var each = function(items, next, callback) {
+    if (!Array.isArray(items)) throw new TypeError('each() expects array as first argument');
+    if (typeof next !== 'function') throw new TypeError('each() expects function as second argument');
+    if (typeof callback !== 'function') callback = Function.prototype; // no-op
+
+    if (items.length === 0) return callback(undefined, items);
+
+    var transformed = new Array(items.length);
+    var count = 0;
+    var returned = false;
+
+    items.forEach(function(item, index) {
+      next(item, function(error, transformedItem) {
+        if (returned) return;
+        if (error) {
+          returned = true;
+          return callback(error);
+        }
+        transformed[index] = transformedItem;
+        count += 1;
+        if (count === items.length) return callback(undefined, transformed);
+      });
+    });
+  };
+
+  if (typeof define !== 'undefined' && define.amd) {
+    define([], function() {
+      return each;
+    }); // RequireJS
+  } else if (typeof module !== 'undefined' && module.exports) {
+    module.exports = each; // CommonJS
+  } else {
+    globals.asyncEach = each; // <script>
+  }
+})(this);