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l2-base-bridging
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Moon Man 2023-08-20 14:52:05 -04:00
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node_modules
.env
.env.*

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# L2 Base Bridging
This is for depositing L1 tokens to L2. Written for Base blockchain
originally
This is a separate project from the token build/deploy project because there
is a dependency conflict between Hardhat and the Optimism SDK.
## Build
npm install #download dependencies
npx tsc # compile
## configure
create a file `.env.dev`
MNEMONIC="special person entering our world egg yolks"
L1_TOKEN_ADDRESS=0xwhatever01
L2_TOKEN_ADDRESS=0xwhatever02
L1_RPC_URL="https://goerli.infura.io/v3/yourapikeyhere"
L2_RPC_URL=https://goerli.base.org
Tailor to your environment. You can create multiple with different suffixes,
they are loaded by the NODE_ENV environment variable below.
## Run
NODE_ENV=dev node dist/index.js weiamounthere
## License
MIT license.

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// SPDX-License-Identifier: MIT
import optimismSDK from "@eth-optimism/sdk";
import ethers from "ethers";
import fs from "fs/promises";
import dotenv from "dotenv";
const env = process.env.NODE_ENV || "local";
dotenv.config({ path: `../10grans-ng/.env.${env}` });
const ABI = ["function balanceOf(address owner) view returns (uint)"];
const wei = process.argv[2];
const l1Addr = (await fs.readFile(`../10grans-ng/.l1-token-address.${env}`, "utf-8")).trim();
const l2Addr = (await fs.readFile(`../10grans-ng/.l2-token-address.${env}`, "utf-8")).trim();
const l1ApiUrl = process.env.L1_RPC_URL;
const l1RpcProvider = new ethers.providers.JsonRpcProvider(l1ApiUrl);
const l1ChainId = (await l1RpcProvider.getNetwork()).chainId;
const l1PrivateKey = ethers.utils.HDNode.fromMnemonic(process.env.MNEMONIC).derivePath(ethers.utils.defaultPath).privateKey;
const l1Wallet = new ethers.Wallet(l1PrivateKey, l1RpcProvider);
const l1Artifacts = JSON.parse(await fs.readFile("../10grans-ng/artifacts/contracts/L1Token.sol/L1Token.json", "utf-8"));
const l1Token = new ethers.Contract(l1Addr, ABI, l1RpcProvider);
const l2ApiUrl = process.env.L2_RPC_URL;
const l2RpcProvider = new ethers.providers.JsonRpcProvider(l2ApiUrl);
const l2ChainId = (await l2RpcProvider.getNetwork()).chainId;
const l2Wallet = new ethers.Wallet(l1PrivateKey, l2RpcProvider);
const l2Artifacts = JSON.parse(await fs.readFile("../10grans-ng/artifacts/contracts/L2Token.sol/L2Token.json", "utf-8"));
const l2Token = new ethers.Contract(l2Addr, ABI, l2RpcProvider);
let l1Balance = await l1Token.balanceOf(l1Wallet.address);
console.log(`BEFORE L1 wallet balance: ${l1Balance}`);
let l2Balance = await l2Token.balanceOf(l1Wallet.address);
console.log(`BEFORE L2 wallet balance: ${l2Balance}`);
const crossChainMessenger = new optimismSDK.CrossChainMessenger({
l1ChainId: l1ChainId,
l2ChainId: l2ChainId,
l1SignerOrProvider: l1Wallet,
l2SignerOrProvider: l2Wallet
});
console.log("Approving transfer...");
const depositTx1 = await crossChainMessenger.approveERC20(l1Token.address, l2Addr, wei);
await depositTx1.wait();
const blockNumber = await l2RpcProvider.getBlockNumber();
console.log("Depositing...");
const depositTx2 = await crossChainMessenger.depositERC20(l1Token.address, l2Addr, wei);
await depositTx2.wait();
console.log("Waiting for response, could take a while...");
await crossChainMessenger.waitForMessageStatus(depositTx2.hash, optimismSDK.MessageStatus.RELAYED, { fromBlockOrBlockHash: blockNumber });
l1Balance = await l1Token.balanceOf(l1Wallet.address);
console.log(`AFTER L1 wallet balance: ${l1Balance}`);
l2Balance = await l2Token.balanceOf(l1Wallet.address);
console.log(`AFTER L2 wallet balance: ${l2Balance}`);

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{
"name": "l2-base-bridging",
"version": "1.0.0",
"description": "",
"type": "module",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "moon@shipoclu.com",
"license": "MIT",
"dependencies": {
"@eth-optimism/sdk": "^3.1.1",
"dotenv": "^16.3.1",
"ethers": "^5.7.2"
},
"devDependencies": {
"typescript": "^5.1.6"
}
}

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// SPDX-License-Identifier: MIT
import optimismSDK from "@eth-optimism/sdk";
import ethers from "ethers";
import fs from "fs/promises";
import dotenv from "dotenv";
const env = process.env.NODE_ENV || "local";
dotenv.config({ path: `.env.${env}` });
const ABI = ["function balanceOf(address owner) view returns (uint)"];
const wei = process.argv[2];
const l1Addr = (process.env.L1_TOKEN_ADDRESS || await fs.readFile(`../10grans-ng/.l1-token-address.${env}`, "utf-8")).trim();
const l2Addr = (process.env.L2TOKEN_ADDRESS || await fs.readFile(`../10grans-ng/.l2-token-address.${env}`, "utf-8")).trim();
const l1ApiUrl = process.env.L1_RPC_URL as string;
const l1RpcProvider = new ethers.providers.JsonRpcProvider(l1ApiUrl);
const l1ChainId = (await l1RpcProvider.getNetwork()).chainId;
const l1PrivateKey = ethers.utils.HDNode.fromMnemonic(process.env.MNEMONIC as string).derivePath(ethers.utils.defaultPath).privateKey;
const l1Wallet = new ethers.Wallet(l1PrivateKey, l1RpcProvider);
const l1Token = new ethers.Contract(l1Addr, ABI, l1RpcProvider);
const l2ApiUrl = process.env.L2_RPC_URL as string;
const l2RpcProvider = new ethers.providers.JsonRpcProvider(l2ApiUrl);
const l2ChainId = (await l2RpcProvider.getNetwork()).chainId;
const l2Wallet = new ethers.Wallet(l1PrivateKey, l2RpcProvider);
const l2Token = new ethers.Contract(l2Addr, ABI, l2RpcProvider);
let l1Balance = await l1Token.balanceOf(l1Wallet.address);
console.log(`BEFORE L1 wallet balance: ${l1Balance}`);
let l2Balance = await l2Token.balanceOf(l1Wallet.address);
console.log(`BEFORE L2 wallet balance: ${l2Balance}`);
const crossChainMessenger = new optimismSDK.CrossChainMessenger({
l1ChainId: l1ChainId,
l2ChainId: l2ChainId,
l1SignerOrProvider: l1Wallet,
l2SignerOrProvider: l2Wallet
});
console.log("Approving transfer...");
const depositTx1 = await crossChainMessenger.approveERC20(l1Token.address, l2Addr, wei);
await depositTx1.wait();
const blockNumber = await l2RpcProvider.getBlockNumber();
console.log("Depositing...");
const depositTx2 = await crossChainMessenger.depositERC20(l1Token.address, l2Addr, wei);
await depositTx2.wait();
console.log("Waiting for response, could take a while...");
await crossChainMessenger.waitForMessageStatus(depositTx2.hash, optimismSDK.MessageStatus.RELAYED, { fromBlockOrBlockHash: blockNumber });
l1Balance = await l1Token.balanceOf(l1Wallet.address);
console.log(`AFTER L1 wallet balance: ${l1Balance}`);
l2Balance = await l2Token.balanceOf(l1Wallet.address);
console.log(`AFTER L2 wallet balance: ${l2Balance}`);

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