From 31eb092abed189c7dbe6675fc7f259ae047c96d6 Mon Sep 17 00:00:00 2001
From: Moshe Atlow <moshe@atlow.co.il>
Date: Fri, 24 May 2024 12:04:28 +0300
Subject: [PATCH] test_runner: avoid error when coverage line not mappable

---
 lib/internal/test_runner/coverage.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/internal/test_runner/coverage.js b/lib/internal/test_runner/coverage.js
index baa80aa7df3715..70f072b8ebedbe 100644
--- a/lib/internal/test_runner/coverage.js
+++ b/lib/internal/test_runner/coverage.js
@@ -355,6 +355,10 @@ class TestCoverage {
           const { startOffset, endOffset, count } = ranges[k];
           const { lines } = mapRangeToLines(ranges[k], originalLines);
 
+          if (lines.length === 0) {
+            // The range is not mappable. Skip it.
+            continue;
+          }
           let startEntry = sourceMap
             .findEntry(lines[0].line - 1, MathMax(0, startOffset - lines[0].startOffset));
           const endEntry = sourceMap