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contract Enum {
    enum Operation {
        Call,
        DelegateCall
    }
}

contract MasterCopy {

    event ChangedMasterCopy(address masterCopy);

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How develop a Safe module

Add dependencies

• yarn add @gnosis.pm/safe-contracts

• Optional for testing

  • yarn add eth-lightwallet

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Create Safe app with typescript support using yarn as a package manager.

• npx create-react-app sapps_getting_started --typescript
• cd sapps_getting_started
• yarn add https://github.com/gnosis/safe-apps-sdk
• add description and iconPath to manifest.json (see https://github.com/gnosis/safe-apps-sdk)
• Setup cors as mentioned in the readme of https://github.com/gnosis/safe-react-apps
• Call initSdk with [/.*localhost.*/] - this allows to use your local safe-react instance
• Add listeners (see https://github.com/gnosis/safe-apps-sdk)
• Install ipfs (https://gist.github.com/MiguelBel/b3b5f711aa8d9362afa5f16e4e972461)

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• Add .env.development with

HTTPS=true
PORT=3002

• Add http-proxy-middleware

yarn add http-proxy-middleware

• Add setupProxy.js in ./src with

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import EIP712Domain from "eth-typed-data";
import BigNumber from "bignumber.js";
import * as ethUtil from 'ethereumjs-util';
import { ethers } from "ethers";
import axios from "axios";

/*
 * Safe relay service example
 * * * * * * * * * * * * * * * * * * * */

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Template Creation Guide

This guide outlines how to create a template that can be used with https://rimeissner.dev/transaction-templates/

A template is a json file that has a root object with the properties name, inputs, txs.

The inputs are used together with the txs to generated the final transactions. Also a simple interface with input fiels is generated for the specified inputs.

Inputs

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// SPDX-License-Identifier: Unlicense
pragma solidity >=0.7.0 <0.9.0;

// src/SafeDeployer141.sol

contract SafeDeployer141 {
    // These addresses must be predeployed on worldchain to ensure that wallet address calc is deterministic
    address public SAFE_PROXY_FACTORY_ADDRESS = 0x4e1DCf7AD4e460CfD30791CCC4F9c8a4f820ec67;
    address public SAFE_L2_SINGLETON_ADDRESS = 0x29fcB43b46531BcA003ddC8FCB67FFE91900C762;