Merge pull request #4676 from jzhang026/chore/error-packageJSON-filename

Given out the filename of the local projects package.json file where the error occured during rush command

Author: iclanton

common/changes/@microsoft/rush/chore-error-packageJSON-filename_2024-05-03-12-11.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@microsoft/rush",
+      "comment": "Provide the file path if there is an error parsing a `package.json` file.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@microsoft/rush"
+}

libraries/rush-lib/src/api/RushConfigurationProject.ts

@@ -245,6 +245,11 @@ export class RushConfigurationProject {
       if (FileSystem.isNotExistError(error as Error)) {
         throw new Error(`Could not find package.json for ${packageName} at ${packageJsonFilename}`);
       }
+
+      // Encountered an error while loading the package.json file. Please append the error message with the corresponding file location.
+      if (error instanceof SyntaxError) {
+        error.message = `${error.message}\nFilename: ${packageJsonFilename}`;
+      }
       throw error;
     }