From e981cc156b447ce7a936114dafac591126fd65dd Mon Sep 17 00:00:00 2001
From: "Benjamin E. Coe" <bencoe@google.com>
Date: Fri, 22 Nov 2019 17:15:41 -0800
Subject: [PATCH] feat: adds special (empty-report) block (#74)

---
 lib/v8-to-istanbul.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/v8-to-istanbul.js b/lib/v8-to-istanbul.js
index 30c50da2..1c53d0eb 100644
--- a/lib/v8-to-istanbul.js
+++ b/lib/v8-to-istanbul.js
@@ -82,8 +82,14 @@ module.exports = class V8ToIstanbul {
           startCol,
           endCol
         } = this._maybeRemapStartColEndCol(range)
-
         const lines = this.source.lines.filter(line => {
+          // Upstream tooling can provide a block with the functionName
+          // (empty-report), this will result in a report that has all
+          // lines zeroed out.
+          if (block.functionName === '(empty-report)') {
+            line.count = 0
+            return true
+          }
           return startCol <= line.endCol && endCol >= line.startCol
         })
         const startLineInstance = lines[0]