Vega Codegen - Amazon Vega Docs

The Turbo Module API package provides the Vega Codegen tool to simplify the code generation process. Vega Codegen generates native signatures and scaffolding code from a TypeScript interface definition of a Turbo Module. Note: To avoid caching the packages globally, run npm install before running Codegen. The following example shows how to run the tool.

npx @amazon-devices/keplerscript-turbomodule-api codegen src/js/src/NativeSampleTurboModule.ts \
    --new -o src/kepler/NativeModules

The tool offers the following options:

-n, --new: Writes implementation templates (and overwrites existing implementations with the same name). Existing files are saved with .bak extension.
-o, --outputPath: Specifies where to generate the native files.
-s, --namespace: The C++ namespace of your TurboModule. Defaults to myTurboModule.
-c, --className: The C++ class name used in the generated code. Defaults to match your TurboModuleRegistry call from the TypeScript interface.
-f, --outFile: The name to use to generate the file names. Defaults to match your TurboModuleRegistry call from the TypeScript interface.

After running the tool, you can add your implementations in src/kepler/NativeModules/SampleTurboModule.cpp. For additional details on running the tool, see Vega Codegen FAQ. For example implementations with more complex types. see Advanced Turbo Module topics.