easybake-sdk-core
Version:
⚒️ An SDK for building applications on top of EasyBake
713 lines (564 loc) • 23.6 kB
JavaScript
'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
var JSBI = _interopDefault(require('jsbi'));
var invariant = _interopDefault(require('tiny-invariant'));
var _Decimal = _interopDefault(require('decimal.js-light'));
var _Big = _interopDefault(require('big.js'));
var toFormat = _interopDefault(require('toformat'));
var address = require('@ethersproject/address');
(function (ChainId) {
ChainId[ChainId["MAINNET"] = 1] = "MAINNET";
ChainId[ChainId["RINKEBY"] = 4] = "RINKEBY";
})(exports.ChainId || (exports.ChainId = {}));
(function (TradeType) {
TradeType[TradeType["EXACT_INPUT"] = 0] = "EXACT_INPUT";
TradeType[TradeType["EXACT_OUTPUT"] = 1] = "EXACT_OUTPUT";
})(exports.TradeType || (exports.TradeType = {}));
(function (Rounding) {
Rounding[Rounding["ROUND_DOWN"] = 0] = "ROUND_DOWN";
Rounding[Rounding["ROUND_HALF_UP"] = 1] = "ROUND_HALF_UP";
Rounding[Rounding["ROUND_UP"] = 2] = "ROUND_UP";
})(exports.Rounding || (exports.Rounding = {}));
var MaxUint256 = /*#__PURE__*/JSBI.BigInt('0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff');
function _defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
function _createClass(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
return Constructor;
}
function _inheritsLoose(subClass, superClass) {
subClass.prototype = Object.create(superClass.prototype);
subClass.prototype.constructor = subClass;
subClass.__proto__ = superClass;
}
var _toSignificantRoundin, _toFixedRounding;
var Decimal = /*#__PURE__*/toFormat(_Decimal);
var Big = /*#__PURE__*/toFormat(_Big);
var toSignificantRounding = (_toSignificantRoundin = {}, _toSignificantRoundin[exports.Rounding.ROUND_DOWN] = Decimal.ROUND_DOWN, _toSignificantRoundin[exports.Rounding.ROUND_HALF_UP] = Decimal.ROUND_HALF_UP, _toSignificantRoundin[exports.Rounding.ROUND_UP] = Decimal.ROUND_UP, _toSignificantRoundin);
var toFixedRounding = (_toFixedRounding = {}, _toFixedRounding[exports.Rounding.ROUND_DOWN] = 0, _toFixedRounding[exports.Rounding.ROUND_HALF_UP] = 1, _toFixedRounding[exports.Rounding.ROUND_UP] = 3, _toFixedRounding);
var Fraction = /*#__PURE__*/function () {
function Fraction(numerator, denominator) {
if (denominator === void 0) {
denominator = JSBI.BigInt(1);
}
this.numerator = JSBI.BigInt(numerator);
this.denominator = JSBI.BigInt(denominator);
}
Fraction.tryParseFraction = function tryParseFraction(fractionish) {
if (fractionish instanceof JSBI || typeof fractionish === 'number' || typeof fractionish === 'string') return new Fraction(fractionish);
if ('numerator' in fractionish && 'denominator' in fractionish) return fractionish;
throw new Error('Could not parse fraction');
} // performs floor division
;
var _proto = Fraction.prototype;
_proto.invert = function invert() {
return new Fraction(this.denominator, this.numerator);
};
_proto.add = function add(other) {
var otherParsed = Fraction.tryParseFraction(other);
if (JSBI.equal(this.denominator, otherParsed.denominator)) {
return new Fraction(JSBI.add(this.numerator, otherParsed.numerator), this.denominator);
}
return new Fraction(JSBI.add(JSBI.multiply(this.numerator, otherParsed.denominator), JSBI.multiply(otherParsed.numerator, this.denominator)), JSBI.multiply(this.denominator, otherParsed.denominator));
};
_proto.subtract = function subtract(other) {
var otherParsed = Fraction.tryParseFraction(other);
if (JSBI.equal(this.denominator, otherParsed.denominator)) {
return new Fraction(JSBI.subtract(this.numerator, otherParsed.numerator), this.denominator);
}
return new Fraction(JSBI.subtract(JSBI.multiply(this.numerator, otherParsed.denominator), JSBI.multiply(otherParsed.numerator, this.denominator)), JSBI.multiply(this.denominator, otherParsed.denominator));
};
_proto.lessThan = function lessThan(other) {
var otherParsed = Fraction.tryParseFraction(other);
return JSBI.lessThan(JSBI.multiply(this.numerator, otherParsed.denominator), JSBI.multiply(otherParsed.numerator, this.denominator));
};
_proto.equalTo = function equalTo(other) {
var otherParsed = Fraction.tryParseFraction(other);
return JSBI.equal(JSBI.multiply(this.numerator, otherParsed.denominator), JSBI.multiply(otherParsed.numerator, this.denominator));
};
_proto.greaterThan = function greaterThan(other) {
var otherParsed = Fraction.tryParseFraction(other);
return JSBI.greaterThan(JSBI.multiply(this.numerator, otherParsed.denominator), JSBI.multiply(otherParsed.numerator, this.denominator));
};
_proto.multiply = function multiply(other) {
var otherParsed = Fraction.tryParseFraction(other);
return new Fraction(JSBI.multiply(this.numerator, otherParsed.numerator), JSBI.multiply(this.denominator, otherParsed.denominator));
};
_proto.divide = function divide(other) {
var otherParsed = Fraction.tryParseFraction(other);
return new Fraction(JSBI.multiply(this.numerator, otherParsed.denominator), JSBI.multiply(this.denominator, otherParsed.numerator));
};
_proto.toSignificant = function toSignificant(significantDigits, format, rounding) {
if (format === void 0) {
format = {
groupSeparator: ''
};
}
if (rounding === void 0) {
rounding = exports.Rounding.ROUND_HALF_UP;
}
!Number.isInteger(significantDigits) ? invariant(false, significantDigits + " is not an integer.") : void 0;
!(significantDigits > 0) ? invariant(false, significantDigits + " is not positive.") : void 0;
Decimal.set({
precision: significantDigits + 1,
rounding: toSignificantRounding[rounding]
});
var quotient = new Decimal(this.numerator.toString()).div(this.denominator.toString()).toSignificantDigits(significantDigits);
return quotient.toFormat(quotient.decimalPlaces(), format);
};
_proto.toFixed = function toFixed(decimalPlaces, format, rounding) {
if (format === void 0) {
format = {
groupSeparator: ''
};
}
if (rounding === void 0) {
rounding = exports.Rounding.ROUND_HALF_UP;
}
!Number.isInteger(decimalPlaces) ? invariant(false, decimalPlaces + " is not an integer.") : void 0;
!(decimalPlaces >= 0) ? invariant(false, decimalPlaces + " is negative.") : void 0;
Big.DP = decimalPlaces;
Big.RM = toFixedRounding[rounding];
return new Big(this.numerator.toString()).div(this.denominator.toString()).toFormat(decimalPlaces, format);
}
/**
* Helper method for converting any super class back to a fraction
*/
;
_createClass(Fraction, [{
key: "quotient",
get: function get() {
return JSBI.divide(this.numerator, this.denominator);
} // remainder after floor division
}, {
key: "remainder",
get: function get() {
return new Fraction(JSBI.remainder(this.numerator, this.denominator), this.denominator);
}
}, {
key: "asFraction",
get: function get() {
return new Fraction(this.numerator, this.denominator);
}
}]);
return Fraction;
}();
var Big$1 = /*#__PURE__*/toFormat(_Big);
var CurrencyAmount = /*#__PURE__*/function (_Fraction) {
_inheritsLoose(CurrencyAmount, _Fraction);
function CurrencyAmount(currency, numerator, denominator) {
var _this;
_this = _Fraction.call(this, numerator, denominator) || this;
!JSBI.lessThanOrEqual(_this.quotient, MaxUint256) ? invariant(false, 'AMOUNT') : void 0;
_this.currency = currency;
_this.decimalScale = JSBI.exponentiate(JSBI.BigInt(10), JSBI.BigInt(currency.decimals));
return _this;
}
/**
* Returns a new currency amount instance from the unitless amount of token, i.e. the raw amount
* @param currency the currency in the amount
* @param rawAmount the raw token or ether amount
*/
CurrencyAmount.fromRawAmount = function fromRawAmount(currency, rawAmount) {
return new CurrencyAmount(currency, rawAmount);
}
/**
* Construct a currency amount with a denominator that is not equal to 1
* @param currency the currency
* @param numerator the numerator of the fractional token amount
* @param denominator the denominator of the fractional token amount
*/
;
CurrencyAmount.fromFractionalAmount = function fromFractionalAmount(currency, numerator, denominator) {
return new CurrencyAmount(currency, numerator, denominator);
};
var _proto = CurrencyAmount.prototype;
_proto.add = function add(other) {
!this.currency.equals(other.currency) ? invariant(false, 'CURRENCY') : void 0;
var added = _Fraction.prototype.add.call(this, other);
return CurrencyAmount.fromFractionalAmount(this.currency, added.numerator, added.denominator);
};
_proto.subtract = function subtract(other) {
!this.currency.equals(other.currency) ? invariant(false, 'CURRENCY') : void 0;
var subtracted = _Fraction.prototype.subtract.call(this, other);
return CurrencyAmount.fromFractionalAmount(this.currency, subtracted.numerator, subtracted.denominator);
};
_proto.multiply = function multiply(other) {
var multiplied = _Fraction.prototype.multiply.call(this, other);
return CurrencyAmount.fromFractionalAmount(this.currency, multiplied.numerator, multiplied.denominator);
};
_proto.divide = function divide(other) {
var divided = _Fraction.prototype.divide.call(this, other);
return CurrencyAmount.fromFractionalAmount(this.currency, divided.numerator, divided.denominator);
};
_proto.toSignificant = function toSignificant(significantDigits, format, rounding) {
if (significantDigits === void 0) {
significantDigits = 6;
}
if (rounding === void 0) {
rounding = exports.Rounding.ROUND_DOWN;
}
return _Fraction.prototype.divide.call(this, this.decimalScale).toSignificant(significantDigits, format, rounding);
};
_proto.toFixed = function toFixed(decimalPlaces, format, rounding) {
if (decimalPlaces === void 0) {
decimalPlaces = this.currency.decimals;
}
if (rounding === void 0) {
rounding = exports.Rounding.ROUND_DOWN;
}
!(decimalPlaces <= this.currency.decimals) ? invariant(false, 'DECIMALS') : void 0;
return _Fraction.prototype.divide.call(this, this.decimalScale).toFixed(decimalPlaces, format, rounding);
};
_proto.toExact = function toExact(format) {
if (format === void 0) {
format = {
groupSeparator: ''
};
}
Big$1.DP = this.currency.decimals;
return new Big$1(this.quotient.toString()).div(this.decimalScale.toString()).toFormat(format);
};
_createClass(CurrencyAmount, [{
key: "wrapped",
get: function get() {
if (this.currency.isToken) return this;
return CurrencyAmount.fromFractionalAmount(this.currency.wrapped, this.numerator, this.denominator);
}
}]);
return CurrencyAmount;
}(Fraction);
var ONE_HUNDRED = /*#__PURE__*/new Fraction( /*#__PURE__*/JSBI.BigInt(100));
/**
* Converts a fraction to a percent
* @param fraction the fraction to convert
*/
function toPercent(fraction) {
return new Percent(fraction.numerator, fraction.denominator);
}
var Percent = /*#__PURE__*/function (_Fraction) {
_inheritsLoose(Percent, _Fraction);
function Percent() {
var _this;
_this = _Fraction.apply(this, arguments) || this;
/**
* This boolean prevents a fraction from being interpreted as a Percent
*/
_this.isPercent = true;
return _this;
}
var _proto = Percent.prototype;
_proto.add = function add(other) {
return toPercent(_Fraction.prototype.add.call(this, other));
};
_proto.subtract = function subtract(other) {
return toPercent(_Fraction.prototype.subtract.call(this, other));
};
_proto.multiply = function multiply(other) {
return toPercent(_Fraction.prototype.multiply.call(this, other));
};
_proto.divide = function divide(other) {
return toPercent(_Fraction.prototype.divide.call(this, other));
};
_proto.toSignificant = function toSignificant(significantDigits, format, rounding) {
if (significantDigits === void 0) {
significantDigits = 5;
}
return _Fraction.prototype.multiply.call(this, ONE_HUNDRED).toSignificant(significantDigits, format, rounding);
};
_proto.toFixed = function toFixed(decimalPlaces, format, rounding) {
if (decimalPlaces === void 0) {
decimalPlaces = 2;
}
return _Fraction.prototype.multiply.call(this, ONE_HUNDRED).toFixed(decimalPlaces, format, rounding);
};
return Percent;
}(Fraction);
var Price = /*#__PURE__*/function (_Fraction) {
_inheritsLoose(Price, _Fraction);
/**
* Construct a price, either with the base and quote currency amount, or the
* @param args
*/
function Price() {
var _this;
var baseCurrency, quoteCurrency, denominator, numerator;
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
if (args.length === 4) {
baseCurrency = args[0];
quoteCurrency = args[1];
denominator = args[2];
numerator = args[3];
} else {
var result = args[0].quoteAmount.divide(args[0].baseAmount);
var _ref = [args[0].baseAmount.currency, args[0].quoteAmount.currency, result.denominator, result.numerator];
baseCurrency = _ref[0];
quoteCurrency = _ref[1];
denominator = _ref[2];
numerator = _ref[3];
}
_this = _Fraction.call(this, numerator, denominator) || this;
_this.baseCurrency = baseCurrency;
_this.quoteCurrency = quoteCurrency;
_this.scalar = new Fraction(JSBI.exponentiate(JSBI.BigInt(10), JSBI.BigInt(baseCurrency.decimals)), JSBI.exponentiate(JSBI.BigInt(10), JSBI.BigInt(quoteCurrency.decimals)));
return _this;
}
/**
* Flip the price, switching the base and quote currency
*/
var _proto = Price.prototype;
_proto.invert = function invert() {
return new Price(this.quoteCurrency, this.baseCurrency, this.numerator, this.denominator);
}
/**
* Multiply the price by another price, returning a new price. The other price must have the same base currency as this price's quote currency
* @param other the other price
*/
;
_proto.multiply = function multiply(other) {
!this.quoteCurrency.equals(other.baseCurrency) ? invariant(false, 'TOKEN') : void 0;
var fraction = _Fraction.prototype.multiply.call(this, other);
return new Price(this.baseCurrency, other.quoteCurrency, fraction.denominator, fraction.numerator);
}
/**
* Return the amount of quote currency corresponding to a given amount of the base currency
* @param currencyAmount the amount of base currency to quote against the price
*/
;
_proto.quote = function quote(currencyAmount) {
!currencyAmount.currency.equals(this.baseCurrency) ? invariant(false, 'TOKEN') : void 0;
var result = _Fraction.prototype.multiply.call(this, currencyAmount);
return CurrencyAmount.fromFractionalAmount(this.quoteCurrency, result.numerator, result.denominator);
}
/**
* Get the value scaled by decimals for formatting
* @private
*/
;
_proto.toSignificant = function toSignificant(significantDigits, format, rounding) {
if (significantDigits === void 0) {
significantDigits = 6;
}
return this.adjustedForDecimals.toSignificant(significantDigits, format, rounding);
};
_proto.toFixed = function toFixed(decimalPlaces, format, rounding) {
if (decimalPlaces === void 0) {
decimalPlaces = 4;
}
return this.adjustedForDecimals.toFixed(decimalPlaces, format, rounding);
};
_createClass(Price, [{
key: "adjustedForDecimals",
get: function get() {
return _Fraction.prototype.multiply.call(this, this.scalar);
}
}]);
return Price;
}(Fraction);
/**
* A currency is any fungible financial instrument, including Ether, all ERC20 tokens, and other chain-native currencies
*/
var BaseCurrency =
/**
* Constructs an instance of the base class `BaseCurrency`.
* @param chainId the chain ID on which this currency resides
* @param decimals decimals of the currency
* @param symbol symbol of the currency
* @param name of the currency
*/
function BaseCurrency(chainId, decimals, symbol, name) {
!Number.isSafeInteger(chainId) ? invariant(false, 'CHAIN_ID') : void 0;
!(decimals >= 0 && decimals < 255 && Number.isInteger(decimals)) ? invariant(false, 'DECIMALS') : void 0;
this.chainId = chainId;
this.decimals = decimals;
this.symbol = symbol;
this.name = name;
};
/**
* Represents the native currency of the chain on which it resides, e.g.
*/
var NativeCurrency = /*#__PURE__*/function (_BaseCurrency) {
_inheritsLoose(NativeCurrency, _BaseCurrency);
function NativeCurrency() {
var _this;
_this = _BaseCurrency.apply(this, arguments) || this;
_this.isNative = true;
_this.isToken = false;
return _this;
}
return NativeCurrency;
}(BaseCurrency);
/**
* Validates an address and returns the parsed (checksummed) version of that address
* @param address the unchecksummed hex address
*/
function validateAndParseAddress(address$1) {
try {
return address.getAddress(address$1);
} catch (error) {
throw new Error(address$1 + " is not a valid address.");
}
}
/**
* Represents an ERC20 token with a unique address and some metadata.
*/
var Token = /*#__PURE__*/function (_BaseCurrency) {
_inheritsLoose(Token, _BaseCurrency);
function Token(chainId, address, decimals, symbol, name) {
var _this;
_this = _BaseCurrency.call(this, chainId, decimals, symbol, name) || this;
_this.isNative = false;
_this.isToken = true;
_this.address = validateAndParseAddress(address);
return _this;
}
/**
* Returns true if the two tokens are equivalent, i.e. have the same chainId and address.
* @param other other token to compare
*/
var _proto = Token.prototype;
_proto.equals = function equals(other) {
return other.isToken && this.chainId === other.chainId && this.address === other.address;
}
/**
* Returns true if the address of this token sorts before the address of the other token
* @param other other token to compare
* @throws if the tokens have the same address
* @throws if the tokens are on different chains
*/
;
_proto.sortsBefore = function sortsBefore(other) {
!(this.chainId === other.chainId) ? invariant(false, 'CHAIN_IDS') : void 0;
!(this.address !== other.address) ? invariant(false, 'ADDRESSES') : void 0;
return this.address.toLowerCase() < other.address.toLowerCase();
}
/**
* Return this token, which does not need to be wrapped
*/
;
_createClass(Token, [{
key: "wrapped",
get: function get() {
return this;
}
}]);
return Token;
}(BaseCurrency);
var _WETH;
/**
* Known WETH9 implementation addresses, used in our implementation of Ether#wrapped
*/
var WETH9 = (_WETH = {}, _WETH[1] = /*#__PURE__*/new Token(1, '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2', 18, 'WETH9', 'Wrapped Ether'), _WETH[4] = /*#__PURE__*/new Token(4, '0xc778417E063141139Fce010982780140Aa0cD5Ab', 18, 'WETH9', 'Wrapped Ether'), _WETH);
/**
* Ether is the main usage of a 'native' currency, i.e. for Ethereum mainnet and all testnets
*/
var Ether = /*#__PURE__*/function (_NativeCurrency) {
_inheritsLoose(Ether, _NativeCurrency);
function Ether(chainId) {
return _NativeCurrency.call(this, chainId, 18, 'ETH', 'Ether') || this;
}
Ether.onChain = function onChain(chainId) {
var _this$_etherCache$cha;
return (_this$_etherCache$cha = this._etherCache[chainId]) != null ? _this$_etherCache$cha : this._etherCache[chainId] = new Ether(chainId);
};
var _proto = Ether.prototype;
_proto.equals = function equals(other) {
return other.isNative && other.chainId === this.chainId;
};
_createClass(Ether, [{
key: "wrapped",
get: function get() {
var weth9 = WETH9[this.chainId];
!!!weth9 ? invariant(false, 'WRAPPED') : void 0;
return weth9;
}
}]);
return Ether;
}(NativeCurrency);
Ether._etherCache = {};
/**
* Returns the percent difference between the mid price and the execution price, i.e. price impact.
* @param midPrice mid price before the trade
* @param inputAmount the input amount of the trade
* @param outputAmount the output amount of the trade
*/
function computePriceImpact(midPrice, inputAmount, outputAmount) {
var quotedOutputAmount = midPrice.quote(inputAmount); // calculate price impact := (exactQuote - outputAmount) / exactQuote
var priceImpact = quotedOutputAmount.subtract(outputAmount).divide(quotedOutputAmount);
return new Percent(priceImpact.numerator, priceImpact.denominator);
}
// `maxSize` by removing the last item
function sortedInsert(items, add, maxSize, comparator) {
!(maxSize > 0) ? invariant(false, 'MAX_SIZE_ZERO') : void 0; // this is an invariant because the interface cannot return multiple removed items if items.length exceeds maxSize
!(items.length <= maxSize) ? invariant(false, 'ITEMS_SIZE') : void 0; // short circuit first item add
if (items.length === 0) {
items.push(add);
return null;
} else {
var isFull = items.length === maxSize; // short circuit if full and the additional item does not come before the last item
if (isFull && comparator(items[items.length - 1], add) <= 0) {
return add;
}
var lo = 0,
hi = items.length;
while (lo < hi) {
var mid = lo + hi >>> 1;
if (comparator(items[mid], add) <= 0) {
lo = mid + 1;
} else {
hi = mid;
}
}
items.splice(lo, 0, add);
return isFull ? items.pop() : null;
}
}
var MAX_SAFE_INTEGER = /*#__PURE__*/JSBI.BigInt(Number.MAX_SAFE_INTEGER);
var ZERO = /*#__PURE__*/JSBI.BigInt(0);
var ONE = /*#__PURE__*/JSBI.BigInt(1);
var TWO = /*#__PURE__*/JSBI.BigInt(2);
/**
* Computes floor(sqrt(value))
* @param value the value for which to compute the square root, rounded down
*/
function sqrt(value) {
!JSBI.greaterThanOrEqual(value, ZERO) ? invariant(false, 'NEGATIVE') : void 0; // rely on built in sqrt if possible
if (JSBI.lessThan(value, MAX_SAFE_INTEGER)) {
return JSBI.BigInt(Math.floor(Math.sqrt(JSBI.toNumber(value))));
}
var z;
var x;
z = value;
x = JSBI.add(JSBI.divide(value, TWO), ONE);
while (JSBI.lessThan(x, z)) {
z = x;
x = JSBI.divide(JSBI.add(JSBI.divide(value, x), x), TWO);
}
return z;
}
exports.BaseCurrency = BaseCurrency;
exports.CurrencyAmount = CurrencyAmount;
exports.Ether = Ether;
exports.Fraction = Fraction;
exports.MaxUint256 = MaxUint256;
exports.NativeCurrency = NativeCurrency;
exports.Percent = Percent;
exports.Price = Price;
exports.Token = Token;
exports.WETH9 = WETH9;
exports.computePriceImpact = computePriceImpact;
exports.sortedInsert = sortedInsert;
exports.sqrt = sqrt;
exports.validateAndParseAddress = validateAndParseAddress;
//# sourceMappingURL=easybake-sdk-core.cjs.development.js.map