metamask-extension/app/scripts/lib/hex-to-bn.js

const ethUtil = require('ethereumjs-util')
const BN = ethUtil.BN

module.exports = function hexToBn (hex) {
  return new BN(ethUtil.stripHexPrefix(hex), 16)
}
Improve UI gas calculation logic - Now striping hex prefixed gas values, which may have been causing mis-estimation. - Unified calculation logic to be entirely functional. - Greatly simplified how the pending-tx form keeps updated form state. Still needs a commit from @kumavis to ensure the background passes in a txMeta.txParams.gasPrice value. 2017-03-28 20:46:33 +02:00			`const ethUtil = require('ethereumjs-util')`
			`const BN = ethUtil.BN`

			`module.exports = function hexToBn (hex) {`
			`return new BN(ethUtil.stripHexPrefix(hex), 16)`
			`}`