CosmJs Support

Injective is not natively supported on the @cosmjs packages. It’s highly recommended to use our @injectivelabs packages to interact with Injective.

If you are familiar with the @cosmjs packages we are exporting similar interfaces/classes that work the same as the classes on @cosmjs but have support for Injective as well.

Again, keep in mind that the recommended approach is to use the Injective’s standard approach, which you can learn more about in Cosmos transactions.

Usage using Keplr

Here is an example on how to use the @injectivelabs alternatives from the @cosmjs packages with Keplr:

import {
  PrivateKey,
  InjectiveStargate,
} from "@injectivelabs/sdk-ts";
import { OfflineDirectSigner } from "@cosmjs/proto-signing";
import { assertIsBroadcastTxSuccess } from '@cosmjs/stargate'

(async () => {
  // Enable Keplr
  await window.keplr.enable(chainId);

  // Get the offline signer
  const offlineSigner = window.getOfflineSigner(chainId);
  const [account] = await offlineSigner.getAccounts();

  // Initialize the stargate client
  const client =
    await InjectiveStargate.InjectiveSigningStargateClient.connectWithSigner(
      "https://lcd-cosmoshub.keplr.app/rest",
      offlineSigner,
    );
  })

  const amount = {
    denom: "inj",
    amount: amount.toString(),
  };
  const fee = {
    amount: [
      {
        denom: "inj",
        amount: "5000000000000000",
      },
    ],
    gas: "200000",
  };

  const result = await client.sendTokens(
    account.address,
    recipient,
    [amount],
    fee,
    ""
  );

  assertIsBroadcastTxSuccess(result);

  if (result.code !== undefined && result.code !== 0) {
    alert("Failed to send tx: " + result.log || result.rawLog);
  } else {
    alert("Succeed to send tx:" + result.transactionHash);
  }
})()

Usage in a CLI/Node environment

Here is an example on how to use the @injectivelabs alternatives from the @cosmjs packages in a node or CLI environment.

Again, keep in mind that the recommended approach is to use the MsgBroadcasterWithPk abstraction to follow the Injective’s standard approach.

import {
  PrivateKey,
  InjectiveStargate,
  InjectiveDirectEthSecp256k1Wallet,
} from "@injectivelabs/sdk-ts";
import { OfflineDirectSigner } from "@cosmjs/proto-signing";
import { Network, getNetworkInfo } from "@injectivelabs/networks";
import { getStdFee } from "@injectivelabs/utils";

(async () => {
  const network = getNetworkInfo(Network.Testnet);
  const privateKeyHash = process.env.PRIVATE_KEY as string;
  const privateKey = PrivateKey.fromHex(privateKeyHash);
  const injectiveAddress = privateKey.toBech32();

  const wallet = (await InjectiveDirectEthSecp256k1Wallet.fromKey(
    Buffer.from(privateKeyHash, "hex")
  )) as OfflineDirectSigner;
  const [account] = await wallet.getAccounts();

  const client =
    await InjectiveStargate.InjectiveSigningStargateClient.connectWithSigner(
      network.rpc as string,
      wallet
    );

  const recipient = injectiveAddress;
  const amount = {
    denom: "inj",
    amount: "1000000000",
  };

  const txResponse = await client.sendTokens(
    account.address,
    recipient,
    [amount],
    getStdFee(),
    "Have fun with your star coins"
  );

  if (txResponse.code !== 0) {
    console.log(`Transaction failed: ${txResponse.rawLog}`);
  } else {
    console.log(
      `Broadcasted transaction hash: ${JSON.stringify(
        txResponse.transactionHash
      )}`
    );
  }
})();