From 4db57869a8052a7010cf5d3f44682c198221a278 Mon Sep 17 00:00:00 2001
From: AriPerkkio <ari.perkkio@gmail.com>
Date: Thu, 8 Dec 2022 20:07:59 +0200
Subject: [PATCH] fix(coverage-istanbul): clear coverage map after use

- Fixes issues where statement counts were duplicated
---
 packages/coverage-istanbul/src/index.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/coverage-istanbul/src/index.ts b/packages/coverage-istanbul/src/index.ts
index a88aae227082..de791bc69b33 100644
--- a/packages/coverage-istanbul/src/index.ts
+++ b/packages/coverage-istanbul/src/index.ts
@@ -7,5 +7,11 @@ export async function getProvider() {
 
 export function takeCoverage() {
   // @ts-expect-error -- untyped global
-  return globalThis[COVERAGE_STORE_KEY]
+  const coverage = globalThis[COVERAGE_STORE_KEY]
+
+  // Reset coverage map to prevent duplicate results if this is called twice in row
+  // @ts-expect-error -- untyped global
+  globalThis[COVERAGE_STORE_KEY] = {}
+
+  return coverage
 }