Debug

Tools for diagnosing programs.

Functions

• CHECKPOINT(label?) → marks a step; returns true. Useful for profiling or logging.
• ASSERT(cond[, msg]) → errors if cond is falsey; otherwise returns true. Provide a message for clearer failures.
• EXPLAIN(varName) → provenance info for a named variable when tracing is enabled; otherwise returns { "var": name, "info": "no provenance" }.

Example

• stdlib-debug-explain

Notes

• Enable tracing in the Playground or runtime to see EXPLAIN output.