*

1 files changed, 6 insertions, 0 deletions

diff --git a/lisp/js/lisp.js b/lisp/js/lisp.js
index 06e18e5..ee2b88d 100644
--- a/lisp/js/lisp.js
+++ b/lisp/js/lisp.js
@@ -222,6 +222,12 @@
       return a === b;
     },
 
+    assert: (condition, message) => {
+      if (!condition) {
+          throw new Error(message || 'Assertion failed');
+      }
+    },
+
     benchmark: async (fn) => { // logs time taken to execute a function.
       const start = Date.now();
       const result = await fn();