assert: refactor internal assert.js

Move lib/internal/assert.js to lib/internal/assert/assertion_error.js.
This is in preparation for making lib/internal/assert.js a tiny module
for use in Node.js built-ins so that we can use `assert()` without
having to load the entire ~1200 line `assert` module.

PR-URL: https://github.com/nodejs/node/pull/25956
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/lib/internal/assert.js b/lib/internal/assert/assertion_error.js
index 4e059db6b9..a13a610da1 100644
--- a/lib/internal/assert.js
+++ b/lib/internal/assert/assertion_error.js
@@ -405,6 +405,4 @@ class AssertionError extends Error {
   }
 }
 
-module.exports = {
-  AssertionError
-};
+module.exports = AssertionError;