@chorus-one/ethereum/dist/mjs/lib/methods/buildValidatorExitTx.js

All-in-one toolkit for building staking dApps on Ethereum network

// https://eips.ethereum.org/EIPS/eip-7002#add-withdrawal-request
export async function buildValidatorExitTx(request) {
    const { value, config, validatorPubkey } = request;
    const pubkey = validatorPubkey.startsWith('0x') ? validatorPubkey.slice(2) : validatorPubkey;
    // Validate pubkey length (should be 48 bytes = 96 hex characters)
    if (pubkey.length !== 96) {
        throw new Error(`Invalid validator pubkey length: expected 96 characters, got ${pubkey.length}`);
    }
    // Amount is 0 for full exit
    const amount = 0n;
    const amountHex = amount.toString(16).padStart(16, '0');
    // Calldata has to be 56 bytes:
    // - 48 bytes for pubkey
    // - 8 bytes for amount (uint64)
    const calldata = `0x${pubkey}${amountHex}`;
    return {
        to: config.withdrawalContractAddress,
        data: calldata,
        value: value ?? config.minConsolidationRequestFee // 1 wei is the minimum value to make the tx valid
    };
}