add comment about filtering

jestjs · May 25, 2018 · 3d28fb1 · 3d28fb1
1 parent 4d78958
commit 3d28fb1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/packages/jest-cli/src/cli/index.js b/packages/jest-cli/src/cli/index.js
@@ -108,6 +108,8 @@ export const runCLI = async (
 
     const stacks = new Set();
 
+    // E.g. timeouts might give multiple traces to the same line of code
+    // This hairy filtering tries to remove entries with duplicate stack traces
     const uniqueErrors = formatted.filter(handle => {
       const ansiFree: string = stripAnsi(handle);