> const log = require('bunyan').createLogger({ name: "bigints" });
undefined
> log.info({ bignumber: 11111n }, 'here is a bigint');
Uncaught TypeError: Do not know how to serialize a BigInt
    at JSON.stringify (<anonymous>)
    at module.exports (/home/ntr/synth/synth-library/api-ts/node_modules/safe-json-stringify/index.js:66:14)
    at fastAndSafeJsonStringify (/home/ntr/synth/synth-library/api-ts/node_modules/bunyan/lib/bunyan.js:1220:24)
    at Logger._emit (/home/ntr/synth/synth-library/api-ts/node_modules/bunyan/lib/bunyan.js:911:15)
    at Logger.info (/home/ntr/synth/synth-library/api-ts/node_modules/bunyan/lib/bunyan.js:1045:24)
>