Add a few missing docblocks to background files

1 files changed, 6 insertions, 1 deletions

diff --git a/app/scripts/lib/hex-to-bn.js b/app/scripts/lib/hex-to-bn.js
index 184217279..b28746920 100644
--- a/app/scripts/lib/hex-to-bn.js
+++ b/app/scripts/lib/hex-to-bn.js
@@ -1,6 +1,11 @@
-const ethUtil = require('ethereumjs-util')
+const ethUtil = (/** @type {object} */ (require('ethereumjs-util')))
 const BN = ethUtil.BN
 
+/**
+ * Returns a [BinaryNumber]{@link BN} representation of the given hex value
+ * @param {string} hex
+ * @return {any}
+ */
 module.exports = function hexToBn (hex) {
   return new BN(ethUtil.stripHexPrefix(hex), 16)
 }