Merge pull request #27 from scottcain/fetch_less_than_zero

fixing the start coord to avoid negative numbers
scottcain · Nov 25, 2024 · 36cbe71 · 36cbe71
2 parents 3b1fef3 + da35968
commit 36cbe71
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/lib/package.json b/lib/package.json
@@ -8,7 +8,7 @@
   },
   "main": "dist/index.js",
   "module": "esm/index.js",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "keywords": [
     "bioinformatics",
     "gene page",

diff --git a/lib/src/accessFasta.ts b/lib/src/accessFasta.ts
@@ -17,7 +17,7 @@ export async function accessFasta(
     gzi: gziFilehandle,
   });
 
-  const upstreamstart = start - 499;
+  const upstreamstart = start - 499 < 0 ? 0 : start - 499;
   const downstreamend = end + 499;
   const seq = await t.getSequence(refseq, start, end);
   const upstream = await t.getSequence(refseq, upstreamstart, start);