Roughing out the demo app

node_modules/json-server/lib/cli/utils/is.js

@@ -0,0 +1,19 @@
+"use strict";
+
+module.exports = {
+  FILE,
+  JS,
+  URL
+};
+
+function FILE(s) {
+  return !URL(s) && /\.json$/.test(s);
+}
+
+function JS(s) {
+  return !URL(s) && /\.js$/.test(s);
+}
+
+function URL(s) {
+  return /^(http|https):/.test(s);
+}