TS solana binding generator

[ernest-nowacki]

TypeScript binding generator

cmd/generate-bindings/solana/tsbindgen.go (in the CLI repo) generates two files from an Anchor IDL:

• A binding class (<ProgramName>.ts) that:
  • Embeds the full IDL as a typed const.
  • Derives @solana/codecs codec expressions for every IDL type (structs, scalar enums, options, vecs, fixed arrays, all primitive types including pubkeys).
  • Sorts types so each codec const only references already-declared codecs.
  • Generates writeReport, writeReportFromBorshEncodedVec, writeReportFrom<Struct>, and writeReportFrom<Struct>s methods for every struct type.
  • Generates account and event decoders with discriminator validation (decode<Name>Account, decode<Name>Event).
• A mock file (<ProgramName>_mock.ts) that wires the binding class against addSolanaContractMock for use in unit tests.

For the end user

The binding command will use the path contracts/solana/src/idl/ by default when --idl is not specified. So user workflow directory structure would look like this:

<project-root>/
  contracts/
    solana/
      src/
        idl/          ← drop your Anchor IDL .json files here
        generated/    ← Go bindings written here
      ts/
        generated/    ← TypeScript bindings written here

Command scans every *.json in the idl directory and generates one binding class per file. You can also pass a single file with --idl path/to/contract.json. Language is auto-detected from whether the project contains .go or .ts files, or override with --language typescript.

[timothyF95]

lgtm