hardhat-deal
Version:
🎩🪄 Easily deal any amount of any ERC20 tokens to any account on the hardhat network
85 lines (84 loc) • 4.7 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.deal = void 0;
const cache_1 = require("./cache");
const types_1 = require("./types");
const ethers_1 = require("ethers");
const balanceOfIfc = new ethers_1.Interface(["function balanceOf(address) external view returns (uint256)"]);
const getBalanceOfSlot = (type, slot, recipient) => {
if (type === types_1.StorageLayoutType.VYPER)
return (0, ethers_1.toQuantity)((0, ethers_1.keccak256)(ethers_1.AbiCoder.defaultAbiCoder().encode(["uint256", "address"], [slot, recipient])));
return (0, ethers_1.toQuantity)((0, ethers_1.keccak256)(ethers_1.AbiCoder.defaultAbiCoder().encode(["address", "uint256"], [recipient, slot])));
};
const getAddress = (address) => __awaiter(void 0, void 0, void 0, function* () {
const awaited = yield address;
if (typeof awaited === "string")
return awaited.toLowerCase();
return awaited.getAddress();
});
const deal = (erc20_1, recipient_1, amount_1, ...args_1) => __awaiter(void 0, [erc20_1, recipient_1, amount_1, ...args_1], void 0, function* (erc20, recipient, amount, maxSlot = 256, hre) {
if (!hre)
hre = require("hardhat");
if (!hre)
throw Error("Could not instanciate Hardhat Runtime Environment");
const [erc20Address, recipientAddress] = yield Promise.all([
getAddress(erc20),
getAddress(recipient),
]);
const hexAmount = (0, ethers_1.toBeHex)(amount, 32);
const balanceOfCall = [
{
to: erc20Address,
data: balanceOfIfc.encodeFunctionData("balanceOf", [recipientAddress]),
},
];
const configDealSlot = hre.config.dealSlots[erc20Address];
const cached = configDealSlot != null;
let dealSlot = typeof configDealSlot === "object" && "type" in configDealSlot
? Object.assign({}, configDealSlot) : { type: types_1.StorageLayoutType.SOLIDITY, slot: configDealSlot !== null && configDealSlot !== void 0 ? configDealSlot : 0 };
const trySlot = () => __awaiter(void 0, void 0, void 0, function* () {
var _a, _b, _c, _d;
let balanceOfSlot = getBalanceOfSlot(dealSlot.type, dealSlot.slot, recipientAddress);
const storageBefore = !cached
? yield hre.network.provider.send("eth_getStorageAt", [erc20Address, balanceOfSlot])
: null;
yield hre.network.provider.send((_b = (_a = hre.network.config.rpcEndpoints) === null || _a === void 0 ? void 0 : _a.setStorageAt) !== null && _b !== void 0 ? _b : "hardhat_setStorageAt", [erc20Address, balanceOfSlot, hexAmount]);
if (cached)
return true;
const balance = yield hre.network.provider.send("eth_call", balanceOfCall);
if (balance === hexAmount)
return true;
yield hre.network.provider.send((_d = (_c = hre.network.config.rpcEndpoints) === null || _c === void 0 ? void 0 : _c.setStorageAt) !== null && _d !== void 0 ? _d : "hardhat_setStorageAt", [erc20Address, balanceOfSlot, storageBefore]);
return false;
});
const getNextDealSlot = () => {
const { slot } = dealSlot;
if (dealSlot.type === types_1.StorageLayoutType.SOLIDITY)
return { type: types_1.StorageLayoutType.VYPER, slot };
return { type: types_1.StorageLayoutType.SOLIDITY, slot: slot + 1 };
};
// Hotfix: warm up EDR account storage
// https://github.com/NomicFoundation/edr/issues/503#issuecomment-2165233608
yield hre.network.provider.send("eth_getCode", [erc20Address]);
let success = yield trySlot();
while (!success && dealSlot.slot <= maxSlot) {
dealSlot = getNextDealSlot();
success = yield trySlot();
}
if (!success)
throw Error(`Could not brute-force storage slot for ERC20 at: ${erc20Address}`);
if (cached)
return;
hre.config.dealSlots[erc20Address] = dealSlot;
(0, cache_1.saveCache)((0, cache_1.getCachePath)(hre.config.paths.cache), hre.config.dealSlots);
});
exports.deal = deal;