Roughing out the demo app

node_modules/nanoid/async/index.js

@@ -0,0 +1,32 @@
+var random = require('./random')
+var url = require('../url')
+
+/**
+ * Generate secure URL-friendly unique ID. Non-blocking version.
+ *
+ * By default, ID will have 21 symbols to have a collision probability similar
+ * to UUID v4.
+ *
+ * @param {number} [size=21] The number of symbols in ID.
+ *
+ * @return {Promise} Promise with random string.
+ *
+ * @example
+ * const nanoidAsync = require('nanoid/async')
+ * nanoidAsync.then(id => {
+ *   model.id = id
+ * })
+ *
+ * @name async
+ * @function
+ */
+module.exports = function (size) {
+  size = size || 21
+  return random(size).then(function (bytes) {
+    var id = ''
+    while (size--) {
+      id += url[bytes[size] & 63]
+    }
+    return id
+  })
+}