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Complete level 36 migration of TypeScript by converting conversion.utils.js and deprecate old conversion util (#17262)

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452
shared/modules/conversion.utils.js
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@ -1,452 +0,0 @@
/**
* Currency Conversion Utility
* This utility function can be used for converting currency related values within metamask.
* The caller should be able to pass it a value, along with information about the value's
* numeric base, denomination and currency, and the desired numeric base, denomination and
* currency. It should return a single value.
*
* @param {(number | string | BN)} value - The value to convert.
* @param {object} [options] - Options to specify details of the conversion
* @param {string} [options.fromCurrency = 'ETH' | 'USD'] - The currency of the passed value
* @param {string} [options.toCurrency = 'ETH' | 'USD'] - The desired currency of the result
* @param {string} [options.fromNumericBase = 'hex' | 'dec' | 'BN'] - The numeric basic of the passed value.
* @param {string} [options.toNumericBase = 'hex' | 'dec' | 'BN'] - The desired numeric basic of the result.
* @param {string} [options.fromDenomination = 'WEI'] - The denomination of the passed value
* @param {string} [options.numberOfDecimals] - The desired number of decimals in the result
* @param {string} [options.roundDown] - The desired number of decimals to round down to
* @param {number} [options.conversionRate] - The rate to use to make the fromCurrency -> toCurrency conversion
* @returns {(number | string | BN)}
*
* The utility passes value along with the options as a single object to the `converter` function.
* `converter` conditional modifies the supplied `value` property, depending
* on the accompanying options.
*/
import BigNumber from 'bignumber.js';
import { addHexPrefix, BN } from 'ethereumjs-util';
import { ETH, WEI } from '../../ui/helpers/constants/common';
import { stripHexPrefix } from './hexstring-utils';
// Big Number Constants
const BIG_NUMBER_WEI_MULTIPLIER = new BigNumber('1000000000000000000');
const BIG_NUMBER_GWEI_MULTIPLIER = new BigNumber('1000000000');
const BIG_NUMBER_ETH_MULTIPLIER = new BigNumber('1');
// Setter Maps
const toBigNumber = {
hex: (n) => new BigNumber(stripHexPrefix(n), 16),
dec: (n) => new BigNumber(String(n), 10),
BN: (n) => new BigNumber(n.toString(16), 16),
};
const toNormalizedDenomination = {
WEI: (bigNumber) => bigNumber.div(BIG_NUMBER_WEI_MULTIPLIER),
GWEI: (bigNumber) => bigNumber.div(BIG_NUMBER_GWEI_MULTIPLIER),
ETH: (bigNumber) => bigNumber.div(BIG_NUMBER_ETH_MULTIPLIER),
};
const toSpecifiedDenomination = {
WEI: (bigNumber) => bigNumber.times(BIG_NUMBER_WEI_MULTIPLIER).round(),
GWEI: (bigNumber) => bigNumber.times(BIG_NUMBER_GWEI_MULTIPLIER).round(9),
ETH: (bigNumber) => bigNumber.times(BIG_NUMBER_ETH_MULTIPLIER).round(9),
};
const baseChange = {
hex: (n) => n.toString(16),
dec: (n) => new BigNumber(n).toString(10),
BN: (n) => new BN(n.toString(16)),
};
// Utility function for checking base types
const isValidBase = (base) => {
return Number.isInteger(base) && base > 1;
};
/**
* Defines the base type of numeric value
*
* @typedef {('hex' | 'dec' | 'BN')} NumericBase
*/
/**
* Defines which type of denomination a value is in
*
* @typedef {('WEI' | 'GWEI' | 'ETH')} EthDenomination
*/
/**
* Utility method to convert a value between denominations, formats and currencies.
*
* @param {object} input
* @param {string | BigNumber} input.value
* @param {NumericBase} input.fromNumericBase
* @param {EthDenomination} [input.fromDenomination]
* @param {string} [input.fromCurrency]
* @param {NumericBase} input.toNumericBase
* @param {EthDenomination} [input.toDenomination]
* @param {string} [input.toCurrency]
* @param {number} [input.numberOfDecimals]
* @param {number} [input.conversionRate]
* @param {boolean} [input.invertConversionRate]
* @param {string} [input.roundDown]
*/
const converter = ({
value,
fromNumericBase,
fromDenomination,
fromCurrency,
toNumericBase,
toDenomination,
toCurrency,
numberOfDecimals,
conversionRate,
invertConversionRate,
roundDown,
}) => {
let convertedValue = fromNumericBase
? toBigNumber[fromNumericBase](value)
: value;
if (fromDenomination) {
convertedValue = toNormalizedDenomination[fromDenomination](convertedValue);
}
if (fromCurrency !== toCurrency) {
if (conversionRate === null || conversionRate === undefined) {
throw new Error(
`Converting from ${fromCurrency} to ${toCurrency} requires a conversionRate, but one was not provided`,
);
}
let rate = toBigNumber.dec(conversionRate);
if (invertConversionRate) {
rate = new BigNumber(1.0).div(conversionRate);
}
convertedValue = convertedValue.times(rate);
}
if (toDenomination) {
convertedValue = toSpecifiedDenomination[toDenomination](convertedValue);
}
if (numberOfDecimals !== undefined && numberOfDecimals !== null) {
convertedValue = convertedValue.round(
numberOfDecimals,
BigNumber.ROUND_HALF_DOWN,
);
}
if (roundDown) {
convertedValue = convertedValue.round(roundDown, BigNumber.ROUND_DOWN);
}
if (toNumericBase) {
convertedValue = baseChange[toNumericBase](convertedValue);
}
return convertedValue;
};
const conversionUtil = (
value,
{
fromCurrency = null,
toCurrency = fromCurrency,
fromNumericBase,
toNumericBase,
fromDenomination,
toDenomination,
numberOfDecimals,
conversionRate,
invertConversionRate,
},
) => {
if (fromCurrency !== toCurrency && !conversionRate) {
return 0;
}
return converter({
fromCurrency,
toCurrency,
fromNumericBase,
toNumericBase,
fromDenomination,
toDenomination,
numberOfDecimals,
conversionRate,
invertConversionRate,
value: value || '0',
});
};
const getBigNumber = (value, base) => {
if (!isValidBase(base)) {
throw new Error('Must specify valid base');
}
// We don't include 'number' here, because BigNumber will throw if passed
// a number primitive it considers unsafe.
if (typeof value === 'string' || value instanceof BigNumber) {
return new BigNumber(value, base);
}
return new BigNumber(String(value), base);
};
const addCurrencies = (a, b, options = {}) => {
const { aBase, bBase, ...conversionOptions } = options;
if (!isValidBase(aBase) || !isValidBase(bBase)) {
throw new Error('Must specify valid aBase and bBase');
}
const value = getBigNumber(a, aBase).add(getBigNumber(b, bBase));
return converter({
value,
...conversionOptions,
});
};
const subtractCurrencies = (a, b, options = {}) => {
const { aBase, bBase, ...conversionOptions } = options;
if (!isValidBase(aBase) || !isValidBase(bBase)) {
throw new Error('Must specify valid aBase and bBase');
}
const value = getBigNumber(a, aBase).minus(getBigNumber(b, bBase));
return converter({
value,
...conversionOptions,
});
};
const multiplyCurrencies = (a, b, options = {}) => {
const { multiplicandBase, multiplierBase, ...conversionOptions } = options;
if (!isValidBase(multiplicandBase) || !isValidBase(multiplierBase)) {
throw new Error('Must specify valid multiplicandBase and multiplierBase');
}
const value = getBigNumber(a, multiplicandBase).times(
getBigNumber(b, multiplierBase),
);
return converter({
value,
...conversionOptions,
});
};
const divideCurrencies = (a, b, options = {}) => {
const { dividendBase, divisorBase, ...conversionOptions } = options;
if (!isValidBase(dividendBase) || !isValidBase(divisorBase)) {
throw new Error('Must specify valid dividendBase and divisorBase');
}
const value = getBigNumber(a, dividendBase).div(getBigNumber(b, divisorBase));
return converter({
value,
...conversionOptions,
});
};
const conversionGreaterThan = ({ ...firstProps }, { ...secondProps }) => {
const firstValue = converter({ ...firstProps });
const secondValue = converter({ ...secondProps });
return firstValue.gt(secondValue);
};
const conversionLessThan = ({ ...firstProps }, { ...secondProps }) => {
const firstValue = converter({ ...firstProps });
const secondValue = converter({ ...secondProps });
return firstValue.lt(secondValue);
};
const conversionMax = ({ ...firstProps }, { ...secondProps }) => {
const firstIsGreater = conversionGreaterThan(
{ ...firstProps },
{ ...secondProps },
);
return firstIsGreater ? firstProps.value : secondProps.value;
};
const conversionGTE = ({ ...firstProps }, { ...secondProps }) => {
const firstValue = converter({ ...firstProps });
const secondValue = converter({ ...secondProps });
return firstValue.greaterThanOrEqualTo(secondValue);
};
const conversionLTE = ({ ...firstProps }, { ...secondProps }) => {
const firstValue = converter({ ...firstProps });
const secondValue = converter({ ...secondProps });
return firstValue.lessThanOrEqualTo(secondValue);
};
const toNegative = (n, options = {}) => {
return multiplyCurrencies(n, -1, options);
};
function decGWEIToHexWEI(decGWEI) {
return conversionUtil(decGWEI, {
fromNumericBase: 'dec',
toNumericBase: 'hex',
fromDenomination: 'GWEI',
toDenomination: 'WEI',
});
}
export function subtractHexes(aHexWEI, bHexWEI) {
return subtractCurrencies(aHexWEI, bHexWEI, {
aBase: 16,
bBase: 16,
toNumericBase: 'hex',
numberOfDecimals: 6,
});
}
export function addHexes(aHexWEI, bHexWEI) {
return addCurrencies(aHexWEI, bHexWEI, {
aBase: 16,
bBase: 16,
toNumericBase: 'hex',
numberOfDecimals: 6,
});
}
export function decWEIToDecETH(hexWEI) {
return conversionUtil(hexWEI, {
fromNumericBase: 'dec',
toNumericBase: 'dec',
fromDenomination: 'WEI',
toDenomination: 'ETH',
});
}
export function hexWEIToDecETH(hexWEI) {
return conversionUtil(hexWEI, {
fromNumericBase: 'hex',
toNumericBase: 'dec',
fromDenomination: 'WEI',
toDenomination: 'ETH',
});
}
export function decEthToConvertedCurrency(
ethTotal,
convertedCurrency,
conversionRate,
) {
return conversionUtil(ethTotal, {
fromNumericBase: 'dec',
toNumericBase: 'dec',
fromCurrency: 'ETH',
toCurrency: convertedCurrency,
numberOfDecimals: 2,
conversionRate,
});
}
export function getWeiHexFromDecimalValue({
value,
fromCurrency,
conversionRate,
fromDenomination,
invertConversionRate,
}) {
return conversionUtil(value, {
fromNumericBase: 'dec',
toNumericBase: 'hex',
toCurrency: ETH,
fromCurrency,
conversionRate,
invertConversionRate,
fromDenomination,
toDenomination: WEI,
});
}
/**
* Converts a BN object to a hex string with a '0x' prefix
*
* @param {BN} inputBn - The BN to convert to a hex string
* @returns {string} A '0x' prefixed hex string
*/
export function bnToHex(inputBn) {
return addHexPrefix(inputBn.toString(16));
}
export function getValueFromWeiHex({
value,
fromCurrency = ETH,
toCurrency,
conversionRate,
numberOfDecimals,
toDenomination,
}) {
return conversionUtil(value, {
fromNumericBase: 'hex',
toNumericBase: 'dec',
fromCurrency,
toCurrency,
numberOfDecimals,
fromDenomination: WEI,
toDenomination,
conversionRate,
});
}
export function sumHexes(...args) {
const total = args.reduce((acc, hexAmount) => {
return addCurrencies(acc, hexAmount, {
toNumericBase: 'hex',
aBase: 16,
bBase: 16,
});
});
return addHexPrefix(total);
}
export function hexWEIToDecGWEI(decGWEI) {
return conversionUtil(decGWEI, {
fromNumericBase: 'hex',
toNumericBase: 'dec',
fromDenomination: 'WEI',
toDenomination: 'GWEI',
});
}
export function decimalToHex(decimal) {
return conversionUtil(decimal, {
fromNumericBase: 'dec',
toNumericBase: 'hex',
});
}
export function hexToDecimal(hexValue) {
return conversionUtil(hexValue, {
fromNumericBase: 'hex',
toNumericBase: 'dec',
});
}
export {
conversionUtil,
addCurrencies,
multiplyCurrencies,
conversionGreaterThan,
conversionLessThan,
conversionGTE,
conversionLTE,
conversionMax,
toNegative,
subtractCurrencies,
decGWEIToHexWEI,
toBigNumber,
toNormalizedDenomination,
divideCurrencies,
};

215
shared/modules/conversion.utils.test.js
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@ -1,212 +1,11 @@
import BigNumber from 'bignumber.js';
import { ETH } from '../../ui/helpers/constants/common';
import { EtherDenomination } from '../constants/common';
import {
addCurrencies,
conversionUtil,
decWEIToDecETH,
divideCurrencies,
getValueFromWeiHex,
getWeiHexFromDecimalValue,
} from './conversion.utils';
describe('conversion utils', () => {
describe('addCurrencies()', () => {
it('add whole numbers', () => {
const result = addCurrencies(3, 9, {
aBase: 10,
bBase: 10,
});
expect(result.toNumber()).toStrictEqual(12);
});
it('add decimals', () => {
const result = addCurrencies(1.3, 1.9, {
aBase: 10,
bBase: 10,
});
expect(result.toNumber()).toStrictEqual(3.2);
});
it('add repeating decimals', () => {
const result = addCurrencies(1 / 3, 1 / 9, {
aBase: 10,
bBase: 10,
});
expect(result.toNumber()).toStrictEqual(0.4444444444444444);
});
});
describe('conversionUtil', () => {
it('returns expected types', () => {
const conv1 = conversionUtil(1000000000000000000, {
fromNumericBase: 'dec',
toNumericBase: 'hex',
});
const conv2 = conversionUtil(1, {
fromNumericBase: 'dec',
fromDenomination: 'ETH',
toDenomination: 'WEI',
});
expect(typeof conv1 === 'string').toStrictEqual(true);
expect(conv2 instanceof BigNumber).toStrictEqual(true);
});
it('converts from dec to hex', () => {
expect(
conversionUtil('1000000000000000000', {
fromNumericBase: 'dec',
toNumericBase: 'hex',
}),
).toStrictEqual('de0b6b3a7640000');
expect(
conversionUtil('1500000000000000000', {
fromNumericBase: 'dec',
toNumericBase: 'hex',
}),
).toStrictEqual('14d1120d7b160000');
});
it('converts hex formatted numbers to dec', () => {
expect(
conversionUtil('0xde0b6b3a7640000', {
fromNumericBase: 'hex',
toNumericBase: 'dec',
}),
).toStrictEqual('1000000000000000000');
expect(
conversionUtil('0x14d1120d7b160000', {
fromNumericBase: 'hex',
toNumericBase: 'dec',
}),
).toStrictEqual('1500000000000000000');
});
it('converts WEI to ETH', () => {
expect(
conversionUtil('0xde0b6b3a7640000', {
fromNumericBase: 'hex',
toNumericBase: 'dec',
fromDenomination: 'WEI',
toDenomination: 'ETH',
}),
).toStrictEqual('1');
expect(
conversionUtil('0x14d1120d7b160000', {
fromNumericBase: 'hex',
toNumericBase: 'dec',
fromDenomination: 'WEI',
toDenomination: 'ETH',
}),
).toStrictEqual('1.5');
});
it('converts ETH to WEI', () => {
expect(
conversionUtil('1', {
fromNumericBase: 'dec',
fromDenomination: 'ETH',
toDenomination: 'WEI',
}).toNumber(),
).toStrictEqual(1000000000000000000);
expect(
conversionUtil('1.5', {
fromNumericBase: 'dec',
fromDenomination: 'ETH',
toDenomination: 'WEI',
}).toNumber(),
).toStrictEqual(1500000000000000000);
});
it('converts ETH to GWEI', () => {
expect(
conversionUtil('1', {
fromNumericBase: 'dec',
fromDenomination: 'ETH',
toDenomination: 'GWEI',
}).toNumber(),
).toStrictEqual(1000000000);
expect(
conversionUtil('1.5', {
fromNumericBase: 'dec',
fromDenomination: 'ETH',
toDenomination: 'GWEI',
}).toNumber(),
).toStrictEqual(1500000000);
});
it('converts ETH to USD', () => {
expect(
conversionUtil('1', {
fromNumericBase: 'dec',
toNumericBase: 'dec',
toCurrency: 'usd',
conversionRate: 468.58,
numberOfDecimals: 2,
}),
).toStrictEqual('468.58');
expect(
conversionUtil('1.5', {
fromNumericBase: 'dec',
toNumericBase: 'dec',
toCurrency: 'usd',
conversionRate: 468.58,
numberOfDecimals: 2,
}),
).toStrictEqual('702.87');
});
it('converts USD to ETH', () => {
expect(
conversionUtil('468.58', {
fromNumericBase: 'dec',
toNumericBase: 'dec',
toCurrency: 'usd',
conversionRate: 468.58,
numberOfDecimals: 2,
invertConversionRate: true,
}),
).toStrictEqual('1');
expect(
conversionUtil('702.87', {
fromNumericBase: 'dec',
toNumericBase: 'dec',
toCurrency: 'usd',
conversionRate: 468.58,
numberOfDecimals: 2,
invertConversionRate: true,
}),
).toStrictEqual('1.5');
});
});
describe('divideCurrencies()', () => {
it('should correctly divide decimal values', () => {
const result = divideCurrencies(9, 3, {
dividendBase: 10,
divisorBase: 10,
});
expect(result.toNumber()).toStrictEqual(3);
});
it('should correctly divide hexadecimal values', () => {
const result = divideCurrencies(1000, 0xa, {
dividendBase: 16,
divisorBase: 16,
});
expect(result.toNumber()).toStrictEqual(0x100);
});
it('should correctly divide hexadecimal value from decimal value', () => {
const result = divideCurrencies(0x3e8, 0xa, {
dividendBase: 16,
divisorBase: 16,
});
expect(result.toNumber()).toStrictEqual(0x100);
});
it('should throw error for wrong base value', () => {
expect(() => {
divideCurrencies(0x3e8, 0xa, {
dividendBase: 10.5,
divisorBase: 7,
});
}).toThrow('Must specify valid dividendBase and divisorBase');
});
});
describe('decWEIToDecETH', () => {
it('converts 10000000000000 WEI to ETH', () => {
const ethDec = decWEIToDecETH('10000000000000');
@ -223,11 +22,18 @@ describe('conversion utils', () => {
it('should correctly convert 0 in ETH', () => {
const weiValue = getWeiHexFromDecimalValue({
value: '0',
fromCurrency: ETH,
fromDenomination: ETH,
fromDenomination: EtherDenomination.ETH,
});
expect(weiValue).toStrictEqual('0');
});
it('should correctly convert 10 in ETH to 8ac7230489e80000 (10000000000000000000) wei', () => {
const weiValue = getWeiHexFromDecimalValue({
value: '10',
fromDenomination: EtherDenomination.ETH,
});
expect(weiValue).toStrictEqual('8ac7230489e80000');
});
});
describe('getValueFromWeiHex', () => {
@ -235,7 +41,6 @@ describe('conversion utils', () => {
const ethTransactionAmount = getValueFromWeiHex({
value: '0xde0b6b3a7640000',
toCurrency: 'ETH',
conversionRate: 468.58,
numberOfDecimals: 6,
});

172
shared/modules/conversion.utils.ts Normal file
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@ -0,0 +1,172 @@
import { BigNumber } from 'bignumber.js';
import { addHexPrefix, BN } from 'ethereumjs-util';
import { EtherDenomination } from '../constants/common';
import { Numeric, NumericValue } from './Numeric';
export function decGWEIToHexWEI(decGWEI: number) {
return new Numeric(decGWEI, 10, EtherDenomination.GWEI)
.toBase(16)
.toDenomination(EtherDenomination.WEI)
.toString();
}
export function subtractHexes(aHexWEI: string, bHexWEI: string) {
return new Numeric(aHexWEI, 16)
.minus(new Numeric(bHexWEI, 16))
.round(6, BigNumber.ROUND_HALF_DOWN)
.toString();
}
export function addHexes(aHexWEI: string, bHexWEI: string) {
return new Numeric(aHexWEI, 16)
.add(new Numeric(bHexWEI, 16))
.round(6, BigNumber.ROUND_HALF_DOWN)
.toString();
}
export function decWEIToDecETH(decWEI: string) {
return new Numeric(decWEI, 10, EtherDenomination.WEI)
.toDenomination(EtherDenomination.ETH)
.toString();
}
export function hexWEIToDecETH(hexWEI: string) {
return new Numeric(hexWEI, 16, EtherDenomination.WEI)
.toDenomination(EtherDenomination.ETH)
.toBase(10)
.toString();
}
export function decEthToConvertedCurrency(
ethTotal: NumericValue,
convertedCurrency?: string,
conversionRate?: number,
) {
let numeric = new Numeric(ethTotal, 10, EtherDenomination.ETH);
if (convertedCurrency !== EtherDenomination.ETH) {
numeric = numeric.applyConversionRate(conversionRate);
}
return numeric.round(2);
}
export function getWeiHexFromDecimalValue({
value,
conversionRate = 1,
fromDenomination,
fromCurrency,
invertConversionRate = false,
}: {
value: NumericValue;
conversionRate?: number;
fromDenomination?: EtherDenomination;
fromCurrency?: string;
invertConversionRate?: boolean;
}) {
let numeric = new Numeric(value, 10, fromDenomination);
if (fromCurrency !== EtherDenomination.ETH) {
numeric = numeric.applyConversionRate(conversionRate, invertConversionRate);
}
return numeric.toBase(16).toDenomination(EtherDenomination.WEI).toString();
}
/**
* Converts a BN object to a hex string with a '0x' prefix
*
* @param inputBn - The BN to convert to a hex string
* @returns A '0x' prefixed hex string
*/
export function bnToHex(inputBn: BN) {
return addHexPrefix(inputBn.toString(16));
}
export function getEthConversionFromWeiHex({
value,
fromCurrency = EtherDenomination.ETH,
conversionRate,
numberOfDecimals = 6,
}: {
value: NumericValue;
conversionRate?: number;
fromCurrency?: EtherDenomination | string;
numberOfDecimals?: number;
}) {
const denominations = [
EtherDenomination.ETH,
EtherDenomination.GWEI,
EtherDenomination.WEI,
];
let nonZeroDenomination;
for (let i = 0; i < denominations.length; i++) {
const convertedValue = getValueFromWeiHex({
value,
conversionRate,
fromCurrency,
toCurrency: fromCurrency,
numberOfDecimals,
toDenomination: denominations[i],
});
if (convertedValue !== '0' || i === denominations.length - 1) {
nonZeroDenomination = `${convertedValue} ${denominations[i]}`;
break;
}
}
return nonZeroDenomination;
}
export function getValueFromWeiHex({
value,
fromCurrency = EtherDenomination.ETH,
toCurrency,
conversionRate,
numberOfDecimals,
toDenomination = EtherDenomination.ETH,
}: {
value: NumericValue;
fromCurrency?: EtherDenomination | string;
toCurrency?: EtherDenomination | string;
conversionRate?: number;
numberOfDecimals?: number;
toDenomination?: EtherDenomination;
}) {
let numeric = new Numeric(value, 16, EtherDenomination.WEI);
if (fromCurrency !== toCurrency) {
numeric = numeric.applyConversionRate(conversionRate);
}
return numeric
.toBase(10)
.toDenomination(toDenomination)
.round(numberOfDecimals, BigNumber.ROUND_HALF_DOWN)
.toString();
}
export function sumHexes(first: string, ...args: string[]) {
const firstValue = new Numeric(first, 16);
const total = args.reduce(
(acc, hexAmount) => acc.add(new Numeric(hexAmount, 16)),
firstValue,
);
return total.toPrefixedHexString();
}
export function hexWEIToDecGWEI(value: number | string | BigNumber | BN) {
return new Numeric(value, 16, EtherDenomination.WEI)
.toBase(10)
.toDenomination(EtherDenomination.GWEI)
.toString();
}
export function decimalToHex(decimal: number | string | BigNumber | BN) {
return new Numeric(decimal, 10).toBase(16).toString();
}
export function hexToDecimal(hexValue: number | string | BigNumber | BN) {
return new Numeric(hexValue, 16).toBase(10).toString();
}