{"version":"2.1.281","anchor":"heap-dump-metadata-records-runtime","canonical_anchor":"heap-dump-metadata-records-runtime","heading":"Heap dump metadata records runtime","tier":"internal","area":"Diagnostics","url":"https:\/\/changelogs.core-directive.com\/v\/2.1.281\/e\/heap-dump-metadata-records-runtime","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.281","markdown":"### Heap dump metadata records runtime\n\nMemory dump details now record whether Claude Code was running on Bun or Node\n\n**What**\n\nA heap dump is a snapshot of a program's memory, used to investigate memory problems. The details saved with a Claude Code heap dump now include a `runtime` field set to `\"bun\"` or `\"node\"`, the two engines Claude Code can run on.\n\n**Why**\n\nAnyone reading a memory dump can see which engine produced it.\n\n- Area: Diagnostics\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 1\/5"}