Add custom functions to MCP-JS interpreter#23
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Dec 9, 2025
r33drichards
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- Add custom_functions module with V8 function binding support
- Functions receive JSON arguments and return JSON values
- Support both stateless and stateful execution with custom functions
- Add lib.rs to expose public API for external use
- Add comprehensive integration test (27 tests covering basic functions, array/object handling, error handling, composition, and stateful execution)
- Add example demonstrating custom function usage with 8 example functions
- Add custom_functions module with V8 function binding support - Functions receive JSON arguments and return JSON values - Support both stateless and stateful execution with custom functions - Add lib.rs to expose public API for external use - Add comprehensive integration test (27 tests covering basic functions, array/object handling, error handling, composition, and stateful execution) - Add example demonstrating custom function usage with 8 example functions
…nces V8 snapshots require native function callbacks to be registered as external references. Added EXTERNAL_REFS static that registers the custom_function_callback, and pass it when creating/restoring snapshots.
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