@kaiachain/kss-bridges-celer/core/helper/constant.ts

TypeScript client and use-cases for cBridge

import { Contract, providers, utils, Wallet } from "ethers"

export const getSigner = (chainRPC: string, privateKey?: string) => {
    if (!privateKey){
        return new providers.JsonRpcProvider(chainRPC)
    }
    else {
        return new Wallet(
            privateKey,
            new providers.JsonRpcProvider(chainRPC)
        );
    }
}

export const getContract = (address: string, abi: any, chainRPC: string, privateKey?: string) => {
    const contractSigner = getSigner(chainRPC, privateKey);
    const contractInterface = new utils.Interface(abi);
    return new Contract(address, contractInterface, contractSigner)
}