Squashed 'lib/vis/' content from commit 1d029ca

git-subtree-dir: lib/vis
git-subtree-split: 1d029cab7b527f3b292e95d550efbf784dac8699

lib/module/hammer.js

@@ -0,0 +1,10 @@
+// Only load hammer.js when in a browser environment
+// (loading hammer.js in a node.js environment gives errors)
+if (typeof window !== 'undefined') {
+  module.exports = window['Hammer'] || require('hammerjs');
+}
+else {
+  module.exports = function () {
+    throw Error('hammer.js is only available in a browser, not in node.js.');
+  }
+}

lib/module/moment.js

@@ -0,0 +1,3 @@
+// first check if moment.js is already loaded in the browser window, if so,
+// use this instance. Else, load via commonjs.
+module.exports = (typeof window !== 'undefined') && window['moment'] || require('moment');