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39 lines
937 B
39 lines
937 B
const ethUtil = require('ethereumjs-util')
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const BN = ethUtil.BN
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module.exports = {
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getStack,
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sufficientBalance,
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hexToBn,
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bnToHex,
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BnMultiplyByFraction,
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}
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function getStack () {
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const stack = new Error('Stack trace generator - not an error').stack
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return stack
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}
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function sufficientBalance (txParams, hexBalance) {
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const balance = hexToBn(hexBalance)
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const value = hexToBn(txParams.value)
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const gasLimit = hexToBn(txParams.gas)
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const gasPrice = hexToBn(txParams.gasPrice)
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const maxCost = value.add(gasLimit.mul(gasPrice))
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return balance.gte(maxCost)
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}
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function bnToHex (inputBn) {
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return ethUtil.addHexPrefix(inputBn.toString(16))
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}
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function hexToBn (inputHex) {
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return new BN(ethUtil.stripHexPrefix(inputHex), 16)
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}
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function BnMultiplyByFraction (targetBN, numerator, denominator) {
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const numBN = new BN(numerator)
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const denomBN = new BN(denominator)
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return targetBN.mul(numBN).div(denomBN)
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}
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