fix: Correct pluralization of the number of occurrences in `EditTool` tool errors (#2463)

1 files changed, 5 insertions, 2 deletions

diff --git a/packages/core/src/tools/edit.ts b/packages/core/src/tools/edit.ts
index 2515261d..1e04ab35 100644
--- a/packages/core/src/tools/edit.ts
+++ b/packages/core/src/tools/edit.ts
@@ -257,9 +257,12 @@ Expectation for required parameters:
           raw: `Failed to edit, 0 occurrences found for old_string in ${params.file_path}. No edits made. The exact text in old_string was not found. Ensure you're not escaping content incorrectly and check whitespace, indentation, and context. Use ${ReadFileTool.Name} tool to verify.`,
         };
       } else if (occurrences !== expectedReplacements) {
+        const occurenceTerm =
+          expectedReplacements === 1 ? 'occurrence' : 'occurrences';
+
         error = {
-          display: `Failed to edit, expected ${expectedReplacements} occurrence(s) but found ${occurrences}.`,
-          raw: `Failed to edit, Expected ${expectedReplacements} occurrences but found ${occurrences} for old_string in file: ${params.file_path}`,
+          display: `Failed to edit, expected ${expectedReplacements} ${occurenceTerm} but found ${occurrences}.`,
+          raw: `Failed to edit, Expected ${expectedReplacements} ${occurenceTerm} but found ${occurrences} for old_string in file: ${params.file_path}`,
         };
       }
     } else {