fix(coverage-istanbul): clear coverage map after use (#2466)

* test: add coverage snapshots * fix(coverage-istanbul): clear coverage map after use - Fixes issues where statement counts were duplicated
vitest-dev · Dec 10, 2022 · e6a18c7 · e6a18c7
1 parent 286e9cf
commit e6a18c7
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diff --git 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
 }