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Node.js Core Development Flags

These flags are specifically designed for use in Node.js core development and are not intended for general application usage.

Note

These APIs are not bound by semantic versioning rules, and they can be altered or removed in any version of Node.js

Command Line Interface (CLI)

Flags

--debug-arraybuffer-allocations

Enables debugging of ArrayBuffer allocations.

--experimental-quic

Enable QUIC Protocol (under development)

--expose-internals

Allows the usage of internal/* modules, granting access to internal Node.js functionality.

--inspect-brk-node[=[host:]port]

Pauses execution at the start of Node.js application code, waiting for a debugger to connect on the specified host and port. This is useful for debugging application startup issues. If host and port are not provided, it defaults to 127.0.0.1:9229.

--node-snapshot

Enables the use of Node.js snapshots, potentially improving startup performance.

--test-udp-no-try-send

Used for testing UDP functionality without attempting to send data.

--trace-promises

Enables tracing of promises for debugging and performance analysis.

--verify-base-objects

Allows verification of base objects for debugging purposes.