@q-dev/gdk-sdk/lib/utils/eip712.js

Typescript Library to interact with GDK Contracts

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getNonceForProposal = exports.getDomain = exports.ConstitutionSignTypes = exports.CandidateTypes = void 0;
const ethers_1 = require("ethers");
// TODO: Divide utils functionality and constants into separate files
exports.CandidateTypes = {
    Candidate: [
        { name: "dao", type: "address" },
        { name: "candidate", type: "address" },
        { name: "message", type: "string" },
        { name: "nonce", type: "bytes32" },
    ],
};
exports.ConstitutionSignTypes = {
    ConstitutionSign: [
        { name: "dao", type: "address" },
        { name: "constitutionHash", type: "bytes32" },
        { name: "signer", type: "address" },
    ],
};
/**
 * Get the domain for a contract that supports EIP712.
 *
 * Usage example:
 *
 * const domain = await getDomain(daoMemberStorageInstance);
 *
 * await account.signTypedData(domain, CandidateTypes, {
 *    dao: daoRegistryAddress, // MUST be in a lowercase
 *    candidate: (await account.getAddress()).toLowerCase(),
 *    message: await daoMemberStorage.getMessage(),
 *    nonce: getNonceForProposal(proposalId, votingContractAddress)
 * });
 */
async function getDomain(contract) {
    const { fields, name, version, chainId, verifyingContract, salt, extensions } = await contract.eip712Domain();
    if (extensions.length > 0) {
        throw Error("Extensions not implemented");
    }
    const domain = {
        name,
        version,
        chainId,
        verifyingContract,
        salt,
    };
    const domainFieldNames = ["name", "version", "chainId", "verifyingContract", "salt"];
    domainFieldNames.forEach((name, index) => {
        if (!(Number(fields) & (1 << index))) {
            delete domain[name];
        }
    });
    return domain;
}
exports.getDomain = getDomain;
function getNonceForProposal(proposalId, votingContractAddress) {
    return ethers_1.ethers.utils.keccak256(new ethers_1.ethers.utils.AbiCoder().encode(["uint256", "address"], [proposalId, votingContractAddress.toLowerCase()]));
}
exports.getNonceForProposal = getNonceForProposal;
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