Please see the attached file format of the Build 37 human genome reference file:
image link
It consists of the following parameters:
#CHROM
POS
ID
REF
ALT
QUAL
FILTER
INFO
This is a valid VCF file, downloaded from Download link
Line 76 in /lib/index.js should have the number 9 change 8 instead:
if (info.length < 9) {
Line 82 in /lib/index.js should also change the number 8 to 7:
var formatIds = info[7].split(':')
to avoid this error thrown. Thank you!