@gmod/gff

read and write GFF3 data as streams
v1.3.0 URL: https://unpkg.com/@gmod/gff@1.3.0/dist/index.js
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bionodebiojsgff3gffgenomics

gff-nostream

utilities to read GFF3 data
v1.3.6 URL: https://unpkg.com/gff-nostream@1.3.6/dist/index.js
OpenBrowse Files
bionodebiojsgff3gffgenomics