viem-erc20/_esm/public/allowance.js

Viem extensions for erc20 tokens

import { erc20Abi, isAddress } from "viem";
import { readContract } from "viem/actions";
export const allowance = async function (client, parameters) {
    const { address, owner, spender } = parameters ?? {};
    if (!isAddress(address)) {
        throw new Error("Invalid address");
    }
    if (!isAddress(owner)) {
        throw new Error("Invalid owner address");
    }
    if (!isAddress(spender)) {
        throw new Error("Invalid spender address");
    }
    return readContract(client, {
        abi: erc20Abi,
        address,
        args: [owner, spender],
        functionName: "allowance",
    });
};
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