Add flow annotation for formatters.js

1 files changed, 3 insertions, 11 deletions

diff --git a/app/lib/formatters.js b/app/lib/formatters.js
index 7fd355efde..89d45d44a0 100644
--- a/app/lib/formatters.js
+++ b/app/lib/formatters.js
@@ -1,17 +1,9 @@
-import assert from 'assert';
-
-/**
- * Format account number
- * @param {string} val  account number
- */
-export const formatAccount = (val) => {
-  assert(typeof(val) === 'string', 'account number must be a string');
-
+// @flow
+export const formatAccount = (val: string): string => {
   // display number altogether when longer than 12
   if(val.length > 12) {
     return val;
   }
-
   // display quartets
   return val.replace(/([0-9]{4})/g, '$1 ').trim();
-};
+};
\ No newline at end of file