Transfer ERC20

Send ERC20 tokens to another account on Loopring L2

The SDK provides the ability to transfer a supported ERC20 token to another account on Loopring Layer2.

Trade value should with decimals

sdk.toBig(value).times("1e" + TOKEN_INFO.tokenMap.LRC.decimals)

const { exchangeInfo } = await LoopringAPI.exchangeAPI.getExchangeInfo();
const LOOPRING_EXPORTED_ACCOUNT.exchangeAddress =  exchangeInfo;

Step 1: Get account Info

const { accInfo } = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);p

Step 2: Get eddsaKey

const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

Step 3: Get apikey

const { apiKey } = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
const { userBalances } = await LoopringAPI.userAPI.getUserBalances(
  { accountId: LOOPRING_EXPORTED_ACCOUNT.accountId, tokens: "" },
  apiKey
);

Step 4: Get storageId

const storageId = await LoopringAPI.userAPI.getNextStorageId(
  {
    accountId: accInfo.accountId,
    sellTokenId: TOKEN_INFO.tokenMap["LRC"].tokenId,
  },
  apiKey
);
console.log("storageId:", storageId);

Step 5: Get fee

const fee = await LoopringAPI.userAPI.getOffchainFeeAmt({
  accountId: accInfo.accountId,
  requestType: sdk.OffchainFeeReqType.TRANSFER,
}, apiKey);
console.log("fee:", fee);

Step 6: Transfer

const transferResult = await LoopringAPI.userAPI.submitInternalTransfer({
  request: {
    exchange: LOOPRING_EXPORTED_ACCOUNT.exchangeAddress,
    payerAddr: accInfo.owner,
    payerId: accInfo.accountId,
    payeeAddr: LOOPRING_EXPORTED_ACCOUNT.address2,
    payeeId: LOOPRING_EXPORTED_ACCOUNT.accountId2,
    storageId: storageId.offchainId,
    token: {
      tokenId: TOKEN_INFO.tokenMap.LRC.tokenId,
      volume: LOOPRING_EXPORTED_ACCOUNT.tradeLRCValue.toString(),
    },
    maxFee: {
      tokenId: TOKEN_INFO.tokenMap["LRC"].tokenId,
      volume: fee.fees["LRC"].fee ?? "9400000000000000000",
    },
    validUntil: LOOPRING_EXPORTED_ACCOUNT.validUntil,
  },
  web3,
  chainId: sdk.ChainId.GOERLI,
  walletType: sdk.ConnectorNames.Trezor,
  eddsaKey: eddsaKey.sk,
  apiKey: apiKey,
});
console.log("transferResult:", transferResult);