@jbrowse/plugin-wiggle/esm/saveTrackFormats/bedGraph.js

JBrowse 2 wiggle adapters, tracks, etc.

export function stringifyBedGraph({ features }) {
    return features
        .map(feature => {
        const chrom = feature.get('refName');
        const start = feature.get('start');
        const end = feature.get('end');
        const score = feature.get('score') ?? 0;
        return `${chrom}\t${start}\t${end}\t${score}`;
    })
        .join('\n');
}