message: fix: convert gene map to zero-based indices
diff: @@ -47,8 +47,11 @@ export function getGeneMap(geneMapJson: GeneMapJson): Gene[] {
  let { start: begin, end } = pick(geneDataRaw, ['start', 'end']) // eslint-disable-line prefer-const
  - // `+1` to make the range semi-open (upper boundary is not included into the range)
  - end += 1
  + // begin: `-1` to convert to zero-based indices
  + begin -= 1
  +
  + // end: `-1` to convert to zero-based indices, `+1` to make the range semi-open (upper boundary is not included into the range)
  + // end = end - 1 + 1
  const geneWithoutColor = { name, range: { begin, end } }
  const length = end - begin
  