node-bloomfilter

A native node bloom filter implementation, using 64bit murmur hash, suport more than 4G bits (It's the reason why i write this lib, most implementation use 32-bit hash or 32-bit array index, so bit vector cannot be larger than 4G).

``js
const Bloomfilter = require('node-bloomfilter');

const bloom = Bloomfilter.bestFor(128 / elemNum /, 0.005 / flase positive rate /);

const bloomXXX = new Bloomfilter(888 / num bits /, 8 / num hash func /);

bloom.put('1');
bloom.put('2');

console.log(bloom.mightContain('1'));
console.log(bloom.mightContain('2'));
console.log(bloom.mightContain('3'));

bloom.toStream().pipe(fs.createWriteStream('/tmp/test.bloom')).on('finish', () => {
Bloomfilter.fromStream(fs.createReadStream('/tmp/test.bloom')).then(deser => {
console.log(bloom, deser);
deser.toStream().pipe(fs.createWriteStream('/tmp/test_dser.bloom'));
});
});
``