Notes #

• First 0.1.0 release of this package.

Features #

Initial scaffold for 18 core packages forming the foundation and middle layers of

the Solana Kit dependency graph. Each package has its pubspec.yaml with correct workspace dependencies, shared analysis_options.yaml, and an empty barrel export file ready for implementation.

Package groups scaffolded:

• Crypto & Identity: addresses (base58), keys (Ed25519), signers (interfaces)
• Codecs: core interfaces, numbers, strings, data structures, umbrella re-export
• Utilities: functional (pipe/compose), options (Rust-like Option codec), fast_stable_stringify, subscribable (reactive patterns)
• Transaction Building: instructions, instruction_plans, transaction_messages, transactions (compilation & signing)
• Other: offchain_messages, test_matchers

Implement foundation utility packages ported from the @solana/functional and

@solana/fast-stable-stringify TypeScript packages.

solana_kit_functional: Adds the Pipe extension which provides a .pipe() method on any value for composable functional pipelines. This is the idiomatic Dart equivalent of the TS pipe() function, used extensively for building transaction messages. Includes 28 tests covering single/multiple transforms, type changes, object mutation, combining, nested pipes, and error propagation.

solana_kit_fast_stable_stringify: Adds fastStableStringify() for deterministic JSON serialization with sorted object keys. Handles all Dart primitives, BigInt (serialized as <value>n), nested maps, lists, and objects implementing ToJsonable. Includes 15 tests matching the upstream SDK's json-stable-stringify reference output.