const serialized = "$$ babel internal serialized type" + Math.random(); function serialize(key, value) { if (typeof value !== "bigint") return value; return { [serialized]: "BigInt", value: value.toString(), }; } function revive(key, value) { if (!value || typeof value !== "object") return value; if (value[serialized] !== "BigInt") return value; return BigInt(value.value); } export default function (value) { return JSON.parse(JSON.stringify(value, serialize), revive); }