SIGABRT (Invalid Free) in node.napi.node during Next.js build on macOS ARM64 (Node v24)

[jabakochashvilisunrun]

Hello! I'm experiencing a hard crash (SIGABRT) when trying to build a Next.js app that uses lmdb. The crash occurs during the build process.

This repository provides a minimal reproduction with the latest version of lmdb and next.

Environment:

• Node.js: v24.13.0
• macOS: 26.2
• Chip: Apple Silicon M4
• Architecture: ARM-64

Steps to Reproduce:

1. Clone the reproduction repository:

git clone https://github.com/jabakochashvilisunrun/lmdb-crash-repro.git
cd lmdb-crash-repro

2. Install dependencies:

npm install

3. Build the app:

npm run build

4. The build fails with a SIGABRT signal after building around 120 pages.

Observed Output:

⨯ Next.js build worker exited with code: null and signal: SIGABRT

Crash Report Details:
The native crash log indicates a memory management issue (___BUG_IN_CLIENT_OF_LIBMALLOC_POINTER_BEING_FREED_WAS_NOT_ALLOCATED).

The stack trace points to node.napi.node attempting to free a std::unordered_map during the EnvWrap::closeEnv phase.
Relevant Stack Trace:

Exception Type:        EXC_CRASH (SIGABRT)
Termination Reason:    Namespace SIGNAL, Code 6, Abort trap: 6
Terminating Process:   node [66417]

Application Specific Information:
abort() called

Thread 0 Crashed:: MainThread Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib          ... __pthread_kill + 8
1   libsystem_pthread.dylib         ... pthread_kill + 296
2   libsystem_c.dylib               ... abort + 124
3   libsystem_malloc.dylib          ... malloc_vreport + 892
4   libsystem_malloc.dylib          ... malloc_report + 64
5   libsystem_malloc.dylib          ... ___BUG_IN_CLIENT_OF_LIBMALLOC_POINTER_BEING_FREED_WAS_NOT_ALLOCATED + 76
6   node.napi.node                  ... void std::__1::__libcpp_operator_delete[abi:un170006]<void*>(void*) + 24
...
15  node.napi.node                  ... std::__1::__hash_table<...>::~__hash_table() + 56
...
19  node.napi.node                  ... ExtendedEnv::~ExtendedEnv() + 64
20  node.napi.node                  ... ExtendedEnv::~ExtendedEnv() + 28
21  node.napi.node                  ... EnvWrap::closeEnv(bool) + 1140

Any suggestions or potential fixes for this would be greatly appreciated. Thanks for your time and for maintaining this library!