fix: harden error handling in lib/cli/run.js (#5074)

* Bugfix: Output stacktrace to support typescript errors.

Before this patch the errorhandling would fail with the error: "ERROR: null". Debug showed that the error "caught error sometime before command handler: TypeError: Cannot convert object to primitive value"

* Update lib/cli/run.js

Co-authored-by: Pelle Wessman <[email protected]>

* Fix minor typo.

* Update lib/cli/run.js

Do not change the original functionality.

Co-authored-by: Pelle Wessman <[email protected]>

* Check that the toString method is available on the error.

* Opting for a simplified solution

* Fix tests

---------

Co-authored-by: Pelle Wessman <[email protected]>

Author: stalet

lib/cli/run.js

@@ -369,7 +369,7 @@ exports.handler = async function (argv) {
   try {
     await runMocha(mocha, argv);
   } catch (err) {
-    console.error('\n' + (err.stack || `Error: ${err.message || err}`));
+    console.error('\n Exception during run:', err);
     process.exit(1);
   }
 };

test/integration/reporters.spec.js

@@ -211,7 +211,7 @@ describe('reporters', function () {
             return;
           }
 
-          var pattern = `^Error: invalid or unsupported TAP version: "${invalidTapVersion}"`;
+          var pattern = `Error: invalid or unsupported TAP version: "${invalidTapVersion}"`;
           expect(res, 'to satisfy', {
             code: 1,
             output: new RegExp(pattern, 'm')