npm i @rsksmart/safe-transactions-sdk

Raw transactions

RawTransactionBuilder initialization

import { RawTransactionBuilder } from '@rsksmart/safe-transactions-sdk'

const ethersSafe: EthersSafe // from '@gnosis.pm/safe-core-sdk'

const rawTransactionBuilder = new RawTransactionBuilder(ethersSafe)

Raw transaction creation

const tx = await rawTransactionBuilder.rawTransaction(
  toAddress, // string
  value, // string
  data // string
)

ERC20 Token transactions

ERC20TransactionBuilder initialization

import { ERC20TransactionBuilder } from '@rsksmart/safe-transactions-sdk'

const ethersSafe: EthersSafe // from '@gnosis.pm/safe-core-sdk'
const erc20TokenAddress: string //

const erc20TransactionBuilder = await ERC20TransactionBuilder.create(ethersSafe, erc20TokenAddress)

transfer

await erc20TransactionBuilder.transfer(
  receiverAddress, // string
  BigNumber.from(valueToTransfer)
)

transferFrom

IMPORTANT: It required prior approval, see ERC20 approval method

await erc20TransactionBuilder.transferFrom(
  fromAddress, // string
  toAddress, // string
  BigNumber.from(valueToTransfer)
)

approve

IMPORTANT: See ERC20 approval method and allowance

await erc20TransactionBuilder.approve(
  spenderAddress, // string
  allowance
)

Rejection transaction creation

IMPORTANT: The rejection transaction needs to be confirmed and executed like any other Multisig transaction.

import { rejectTx } from '@rsksmart/safe-transactions-sdk'

const rejectionTx = await rejectTx(safe, transaction)

ERC721 Token transaction

ERC721TransactionBuilder initialization

import { ERC721TransactionBuilder } from '@rsksmart/safe-transactions-sdk'

const ethersSafe: EthersSafe // from '@gnosis.pm/safe-core-sdk'
const erc721TokenAddress: string //

const erc721TransactionBuilder = await ERC721TransactionBuilder.create(
  ethersSafe,
  erc721TokenAddress
)

transferFrom

IMPORTANT: Only the current owner, an authorized operator, or the approved address can call this method, see ERC721

await erc721TransactionBuilder.transferFrom(
  fromAddress, // string
  toAddress, // string
  tokenId // BigNumber
)

safeTransferFrom

The safeTransferFrom methods perform the same operation performed by transferFrom and additionally, if the receiver is a contract address, they check if the contract address implements the interface ERC721TokenReceiver and it returns the value 0x150b7a02, obtained from bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")). For further info, see ERC721

interface ERC721TokenReceiver {
    function onERC721Received(address _operator, address _from, uint256 _tokenId, bytes _data) external returns(bytes4);
}

IMPORTANT: Only the current owner, an authorized operator, or the approved address can call this method, see ERC721

await erc721TransactionBuilder.safeTransferFrom(
  fromAddress, // string
  toAddress, // string
  tokenId // BigNumber
)

It can be called with the optional data parameter that will be sent to the receiver with the onERC721Received call.

await erc721TransactionBuilder.safeTransferFrom(
  fromAddress, // string
  toAddress, // string
  tokenId // BigNumber
  data  // string
)

approve

IMPORTANT: See ERC721 approval method

await erc721TransactionBuilder.approve(
  approvedAddress, // string
  tokenId // BigNumber
)

setApprovalForAll

It sets or unsets approval for a specific operator. That would allow the operator to perform transfer operations on behalf of the owner.

IMPORTANT: See ERC721 setApprovalForAll method

await erc721TransactionBuilder.setApprovalForAll(
  operatorAddress, // string
  approved // boolean
)

Run for development

Install dependencies:

npm i

Run a local network

npx hardhat node

Tests

Run unit tests with

npx hardhat test

Lint & formatting

npm run format
npm run lint

Build

npm run build