1 files changed, 7 insertions, 6 deletions
diff --git a/tools/copyright_checker.js b/tools/copyright_checker.js
index 6017e25c4..cdd11bcb3 100644
--- a/tools/copyright_checker.js
+++ b/tools/copyright_checker.js
@@ -40,7 +40,7 @@ export async function checkCopyright() {
     "*Cargo.toml",
   ]);
 
-  let totalCount = 0;
+  const errors = [];
   const sourceFilesSet = new Set(sourceFiles);
 
   for (const file of sourceFilesSet) {
@@ -53,8 +53,7 @@ export async function checkCopyright() {
           "# Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.",
         )
       ) {
-        console.log(ERROR_MSG + file);
-        totalCount += 1;
+        errors.push(ERROR_MSG + file);
       }
       continue;
     }
@@ -65,12 +64,14 @@ export async function checkCopyright() {
         "// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.",
       )
     ) {
-      console.log(ERROR_MSG + file);
-      totalCount += 1;
+      errors.push(ERROR_MSG + file);
     }
   }
 
-  if (totalCount > 0) {
+  if (errors.length > 0) {
+    // show all the errors at the same time to prevent overlap with
+    // other running scripts that may be outputting
+    console.error(errors.join("\n"));
     throw new Error(`Copyright checker had ${totalCount} errors.`);
   }
 }