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https://github.com/kremalicious/metamask-extension.git
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ee205b893f
* create custom addHexPrefix function * switch to custom addHexPrefix Co-authored-by: Mark Stacey <markjstacey@gmail.com> Co-authored-by: Erik Marks <rekmarks@protonmail.com>
147 lines
3.4 KiB
JavaScript
147 lines
3.4 KiB
JavaScript
import currencyFormatter from 'currency-formatter'
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import currencies from 'currency-formatter/currencies'
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import BigNumber from 'bignumber.js'
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import { addHexPrefix } from '../../../../app/scripts/lib/util'
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import { unconfirmedTransactionsCountSelector } from '../../selectors'
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import {
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conversionUtil,
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addCurrencies,
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multiplyCurrencies,
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conversionGreaterThan,
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} from './conversion-util'
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export function increaseLastGasPrice(lastGasPrice) {
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return addHexPrefix(
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multiplyCurrencies(lastGasPrice || '0x0', 1.1, {
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multiplicandBase: 16,
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multiplierBase: 10,
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toNumericBase: 'hex',
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}),
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)
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}
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export function hexGreaterThan(a, b) {
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return conversionGreaterThan(
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{ value: a, fromNumericBase: 'hex' },
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{ value: b, fromNumericBase: 'hex' },
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)
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}
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export function getHexGasTotal({ gasLimit, gasPrice }) {
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return addHexPrefix(
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multiplyCurrencies(gasLimit || '0x0', gasPrice || '0x0', {
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toNumericBase: 'hex',
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multiplicandBase: 16,
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multiplierBase: 16,
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}),
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)
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}
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export function addEth(...args) {
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return args.reduce((acc, base) => {
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return addCurrencies(acc, base, {
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toNumericBase: 'dec',
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numberOfDecimals: 6,
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})
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})
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}
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export function addFiat(...args) {
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return args.reduce((acc, base) => {
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return addCurrencies(acc, base, {
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toNumericBase: 'dec',
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numberOfDecimals: 2,
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})
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})
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}
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export function getValueFromWeiHex({
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value,
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fromCurrency = 'ETH',
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toCurrency,
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conversionRate,
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numberOfDecimals,
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toDenomination,
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}) {
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return conversionUtil(value, {
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fromNumericBase: 'hex',
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toNumericBase: 'dec',
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fromCurrency,
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toCurrency,
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numberOfDecimals,
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fromDenomination: 'WEI',
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toDenomination,
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conversionRate,
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})
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}
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export function getTransactionFee({
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value,
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fromCurrency = 'ETH',
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toCurrency,
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conversionRate,
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numberOfDecimals,
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}) {
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return conversionUtil(value, {
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fromNumericBase: 'BN',
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toNumericBase: 'dec',
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fromDenomination: 'WEI',
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fromCurrency,
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toCurrency,
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numberOfDecimals,
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conversionRate,
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})
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}
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export function formatCurrency(value, currencyCode) {
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const upperCaseCurrencyCode = currencyCode.toUpperCase()
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return currencies.find((currency) => currency.code === upperCaseCurrencyCode)
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? currencyFormatter.format(Number(value), {
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code: upperCaseCurrencyCode,
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style: 'currency',
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})
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: value
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}
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export function convertTokenToFiat({
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value,
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fromCurrency = 'ETH',
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toCurrency,
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conversionRate,
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contractExchangeRate,
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}) {
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const totalExchangeRate = conversionRate * contractExchangeRate
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return conversionUtil(value, {
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fromNumericBase: 'dec',
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toNumericBase: 'dec',
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fromCurrency,
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toCurrency,
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numberOfDecimals: 2,
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conversionRate: totalExchangeRate,
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})
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}
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export function hasUnconfirmedTransactions(state) {
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return unconfirmedTransactionsCountSelector(state) > 0
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}
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/**
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* Rounds the given decimal string to 4 significant digits.
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*
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* @param {string} decimalString - The base-ten number to round.
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* @returns {string} The rounded number, or the original number if no
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* rounding was necessary.
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*/
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export function roundExponential(decimalString) {
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const PRECISION = 4
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const bigNumberValue = new BigNumber(decimalString)
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// In JS, numbers with exponentials greater than 20 get displayed as an exponential.
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return bigNumberValue.e > 20
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? bigNumberValue.toPrecision(PRECISION)
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: decimalString
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}
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