Initial import with skill sheet working

node_modules/liftoff/lib/array_find.js

@@ -0,0 +1,18 @@
+'use strict';
+
+function arrayFind(arr, fn) {
+  if (!Array.isArray(arr)) {
+    return;
+  }
+
+  var idx = 0;
+  while (idx < arr.length) {
+    var result = fn(arr[idx]);
+    if (result) {
+      return result;
+    }
+    idx++;
+  }
+}
+
+module.exports = arrayFind;