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Version: Canary 🚧

Compact.js 2.4.0 release notes

  • Version: 2.4.0
  • Date: 2026-01-28
  • Environment: Preprod, Preview

High-level summary​

Compact.js provides a TypeScript-based execution environment for smart contracts compiled with the Compact language. This release is the initial release of Compact.js and is used internally by Midnight.js and the Node Toolkit.

Compact.js provides a core library for tool and framework developers, as well as a command package that encapsulates the library-provided capabilities as commands that can be integrated into command-line applications built with Effect's CLI.

Audience​

This release is relevant for developers who build tools or frameworks that deploy and interact with contracts on the Midnight blockchain.

New features​

Here are the new features in this release:

Core library​

@midnight-ntwrk/compact-js provides the core capabilities to build CompiledContract instances from the compiled assets produced by the Compact compiler. These can then be transformed into ContractExecutable instances, which are used to initialize and run contract instances.

Commanding​

@midnight-ntwrk/compact-js-command provides commands that consume a TypeScript-based configuration defining a CompiledContract and expose it via a command-line interface.

Deprecations​

N/A

Breaking changes​

N/A

Important notes​

While developers can use Compact.js to interact with Compact-compiled contracts at runtime, this release is primarily intended for internal use by the Midnight.js contracts package (@midnight-ntwrk/midnight-js-contracts) to deploy contracts and invoke their circuits.

DApp developers are encouraged to continue using Midnight.js for these capabilities.

Known issues​

N/A