@avalanche-sdk/interchain/dist/ictt/utils/approveToken.js

Interchain package for handling ICM/ICTT messages

import { createPublicClient, http } from "viem";
import { erc20ABI } from "../../abis/erc20ABI";
import { getERC20TokenInfo } from "./getERC20TokenInfo";
export async function approveToken(params) {
    const publicClient = createPublicClient({
        chain: params.chain,
        transport: http(),
    });
    const { tokenDecimals } = await getERC20TokenInfo(params.chain, params.tokenAddress);
    const amountInWei = BigInt(params.amountInBaseUnit) * BigInt(10 ** tokenDecimals);
    const approveTxHash = await params.walletClient.writeContract({
        address: params.tokenAddress,
        abi: erc20ABI.abi,
        functionName: "approve",
        args: [params.spenderAddress, amountInWei],
        chain: params.chain,
        account: params.walletClient.account ?? null,
    });
    const receipt = await publicClient.waitForTransactionReceipt({
        hash: approveTxHash,
    });
    if (receipt.status === "success") {
        return { txHash: approveTxHash };
    }
    else {
        throw new Error("Failed to approve token.", { cause: receipt });
    }
}
//# sourceMappingURL=approveToken.js.map