spnp-over-db.js

// In order to reduce json file size with such an amount of entities I used short key names:
// gt = alleles group
// rs = Rs[XXXXXX] string
module.exports = (snps, data) => 
	snps.reduce((prev, next) => {
		if (!next || !next.rs) {
			return prev;
		}

		const rs = next.rs.toLowerCase();
		const gt = next.gt;
		if (next.gt !== null) {
			if (Array.isArray(data[rs]) && data[rs].indexOf(gt) > -1) {
				prev.push(next);
			}

			return prev;
		}
		if (Array.isArray(data[rs])) {
			prev.push(next);
		}
		return prev;
	}, []);