viem-erc20
Version:
Viem extensions for erc20 tokens
27 lines • 919 B
JavaScript
import { erc20Abi, isAddress } from "viem";
import { writeContract } from "viem/actions";
export const approveErc20Token = async function (client, parameters) {
const { address, amount, spender } = parameters;
if (!isAddress(address)) {
throw new Error("Invalid address");
}
if (typeof amount !== "bigint") {
throw new Error("Invalid amount");
}
if (!isAddress(spender)) {
throw new Error("Invalid spender address");
}
if (amount <= BigInt(0)) {
throw new Error("Invalid amount, must be greater than 0");
}
return writeContract(client, {
abi: erc20Abi,
// @ts-expect-error: TS is complaining about client.account definition, but this works
account: client.account,
address,
args: [spender, amount],
chain: client.chain,
functionName: "approve",
});
};
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