From 17325fc082e6e62902cd875f081c8355be850bd3 Mon Sep 17 00:00:00 2001
From: bcoe <bencoe@google.com>
Date: Sat, 16 Nov 2019 18:21:02 -0800
Subject: [PATCH] feat: adds special (empty-report) block

---
 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]