@uniswap/smart-wallet-sdk/dist/cjs/src/utils/delegation.js

⚒️ An SDK for building applications with smart wallets on Uniswap

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Delegation = void 0;
const experimental_1 = require("viem/experimental");
const constants_1 = require("../constants");
class Delegation {
    /**
     * Recovers the signers of each authorization within the list sent in the transaction
     * @dev this can also return just the contractAddress each signer is delegated to
     * @param transaction : TransactionEIP7702
     * @returns : Promise<RecoveredAuthorizationMap>
     */
    static parseAuthorizationListFromTransaction(transaction) {
        return this.parseAuthorizationList(transaction.authorizationList);
    }
    /**
     * Recovers the signers of each authorization in the list
     * @param authorizationList : SignedAuthorizationList
     * @returns : Promise<RecoveredAuthorizationMap>
     */
    static async parseAuthorizationList(authorizationList) {
        // recover each authorization
        const result = {};
        for (const authorization of authorizationList) {
            const signer = await (0, experimental_1.recoverAuthorizationAddress)({ authorization });
            result[signer] = authorization;
        }
        return result;
    }
    /// Parses a delegation from an address's code
    /// @dev will throw if the code is not a valid delegation per EIP7702 spec
    static parseFromCode(code) {
        if (code.length !== 48) {
            throw new Error(`Invalid delegation length: ${code.length}`);
        }
        // parse out magic prefix which is 4 bytes
        const magicPrefix = code.slice(0, 8);
        if (magicPrefix !== constants_1.DELEGATION_MAGIC_PREFIX) {
            throw new Error(`Invalid delegation magic prefix: ${magicPrefix}`);
        }
        const delegation = code.slice(8);
        return `0x${delegation}`;
    }
}
exports.Delegation = Delegation;
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