Merge pull request #5512 from MetaMask/v4.14.0

Version 4.14.0

1 files changed, 63 insertions, 0 deletions

diff --git a/ui/app/helpers/conversions.util.js b/ui/app/helpers/conversions.util.js
new file mode 100644
index 000000000..20ef9e35b
--- /dev/null
+++ b/ui/app/helpers/conversions.util.js
@@ -0,0 +1,63 @@
+import ethUtil from 'ethereumjs-util'
+import { conversionUtil } from '../conversion-util'
+import { ETH, GWEI, WEI } from '../constants/common'
+
+export function bnToHex (inputBn) {
+  return ethUtil.addHexPrefix(inputBn.toString(16))
+}
+
+export function hexToDecimal (hexValue) {
+  return conversionUtil(hexValue, {
+    fromNumericBase: 'hex',
+    toNumericBase: 'dec',
+  })
+}
+
+export function decimalToHex (decimal) {
+  return conversionUtil(decimal, {
+    fromNumericBase: 'dec',
+    toNumericBase: 'hex',
+  })
+}
+
+export function getEthConversionFromWeiHex ({ value, conversionRate, numberOfDecimals = 6 }) {
+  const denominations = [ETH, GWEI, WEI]
+
+  let nonZeroDenomination
+
+  for (let i = 0; i < denominations.length; i++) {
+    const convertedValue = getValueFromWeiHex({
+      value,
+      conversionRate,
+      toCurrency: ETH,
+      numberOfDecimals,
+      toDenomination: denominations[i],
+    })
+
+    if (convertedValue !== '0' || i === denominations.length - 1) {
+      nonZeroDenomination = `${convertedValue} ${denominations[i]}`
+      break
+    }
+  }
+
+  return nonZeroDenomination
+}
+
+export function getValueFromWeiHex ({
+  value,
+  toCurrency,
+  conversionRate,
+  numberOfDecimals,
+  toDenomination,
+}) {
+  return conversionUtil(value, {
+    fromNumericBase: 'hex',
+    toNumericBase: 'dec',
+    fromCurrency: ETH,
+    toCurrency,
+    numberOfDecimals,
+    fromDenomination: WEI,
+    toDenomination,
+    conversionRate,
+  })
+}