Merge b30f36e into 9b3d089

bcoe · Sep 6, 2019 · 1148342 · 1148342
2 parents 9b3d089 + b30f36e
commit 1148342
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/lib/report.js b/lib/report.js
@@ -110,11 +110,23 @@ class Report {
   _getMergedProcessCov () {
     const v8ProcessCovs = []
     for (const v8ProcessCov of this._loadReports()) {
-      v8ProcessCovs.push(this._normalizeProcessCov(v8ProcessCov))
+      if (this._isCoverageObject(v8ProcessCov)) {
+        v8ProcessCovs.push(this._normalizeProcessCov(v8ProcessCov))
+      }
     }
     return mergeProcessCovs(v8ProcessCovs)
   }
 
+  /**
+   * Make sure v8ProcessCov actually contains coverage information.
+   *
+   * @return {boolean} does it look like v8ProcessCov?
+   * @private
+   */
+  _isCoverageObject (maybeV8ProcessCov) {
+    return maybeV8ProcessCov && Array.isArray(maybeV8ProcessCov.result)
+  }
+
   /**
    * Returns the list of V8 process coverages generated by Node.
    *