Is this an ES BigInt value?
var isBigInt = require('is-bigint');
assert(!isBigInt(function () {}));
assert(!isBigInt(null));
assert(!isBigInt(function* () { yield 42; return Infinity; });
assert(!isBigInt(Symbol('foo')));
assert(isBigInt(1n));
assert(isBigInt(Object(1n)));
Simply clone the repo, npm install
, and run npm test