First typescript iteration

server/helpers/custom-validators/pods.ts

@@ -0,0 +1,24 @@
+import expressValidator = require('express-validator')
+// TODO: use .validator when express-validator typing will have validator field
+const validator = expressValidator['validator']
+
+import { isArray } from './misc'
+
+function isHostValid (host) {
+  return validator.isURL(host) && host.split('://').length === 1
+}
+
+function isEachUniqueHostValid (hosts) {
+  return isArray(hosts) &&
+    hosts.length !== 0 &&
+    hosts.every(function (host) {
+      return isHostValid(host) && hosts.indexOf(host) === hosts.lastIndexOf(host)
+    })
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  isEachUniqueHostValid,
+  isHostValid
+}