jsbi VS safe-json-value

import 'dotenv/config'; import * as erc20abi from './abi.json'; import Web3, { Contract, WebSocketProvider } from 'web3'; /* Workaround for JSON.stringify() event logs with BigInt values. We need to stringify event logs for more readable logging in CloudWatch. https://github.com/GoogleChromeLabs/jsbi/issues/30 */ (BigInt.prototype as any).toJSON = function () { return this.toString(); }; /** * Starts the smart contract event listener. * Websocket Provider config: https://docs.web3js.org/api/web3-providers-ws/class/WebSocketProvider * @param chain - Name of the blockchain network for logging purposes. * @param wssEndpoint - Websocket endpoint for the blockchain network. * @param contractAddress - Smart contract address. */ const startEventListener = async (chain: string, wssEndpoint: string, contractAddress: string) => { const provider = new WebSocketProvider( wssEndpoint, {}, { autoReconnect: true, delay: 10000, // Default: 5000 ms maxAttempts: 10, // Default: 5 }, ); provider.on('connect', () => { console.log(`Connected to ${chain} websocket provider`); }); provider.on('disconnect', error => { console.error(`Closed ${chain} webSocket connection`, error); }); const web3 = new Web3(provider); /* Smart contract event listeners Listening to events: - Transfer - Approval */ const contract = new web3.eth.Contract(erc20abi, contractAddress); await subscribeToEvent(chain, contract, 'Transfer'); await subscribeToEvent(chain, contract, 'Approval'); }; /** * Subscribes to a smart contract event. * @param chain - Name of the blockchain network for logging purposes. * @param contract - Smart contract address. * @param eventName - Name of the event to subscribe to. */ const subscribeToEvent = async (chain: string, contract: Contract, eventName: string) => { const subscription = await contract.events[eventName](); subscription.on('connected', subscriptionId => { console.log(`${chain} USDT '${eventName}' SubID:`, subscriptionId); }); subscription.on('data', event => { console.log(`${chain} USDT '${eventName}'`, JSON.stringify({ event })); // cannot json.stringify BigInt... }); subscription.on('changed', event => { // Remove event from local database }); subscription.on('error', error => { console.error(`${chain} USDT '${eventName}' error:`, error); }); }; /* Start smart contract event listeners Chains: - Ethereum */ startEventListener('Ethereum', process.env.ETH_WSS_ENDPOINT!, process.env.ETH_SMART_CONTRACT_ADDRESS!);

Have you considered something like https://github.com/GoogleChromeLabs/jsbi ? That's a pure-JS implementation of BigInt (though it may have some caveats for usage - check the repo for details).

I looked at the repository: https://github.com/GoogleChromeLabs/jsbi

safe-json-value is a JavaScript library to prevent JSON.serialize() from: