#Code Generation

The Brownfield CLI generates native types from your TypeScript store definitions.

#Usage

brownfield codegen          # Generate for all configured platforms
brownfield codegen -p swift # Generate Swift only
brownfield --help           # Show help
brownfield --version        # Show version

#Configuration

Swift files are always generated to node_modules/@callstack/brownie/ios/Generated/. This path is auto-resolved and not configurable.

#Generated Output

For this TypeScript definition:

interface BrownfieldStore extends BrownieStore {
  counter: number;
  user: { name: string };
}

#Swift Output

Generated to: node_modules/@callstack/brownie/ios/Generated/BrownfieldStore.swift

import Brownie

public struct BrownfieldStore: Codable {
    public var counter: Double
    public var user: User
}

public struct User: Codable {
    public var name: String
}

extension BrownfieldStore: BrownieStoreProtocol {
    public static let storeName = "BrownfieldStore"
}

The generated struct:

• Uses public access level for framework compatibility
• Conforms to Codable for JSON serialization
• Conforms to BrownieStoreProtocol with auto-generated storeName
• Uses mutable var properties

#How It Works

1. CLI recursively finds all *.brownie.ts files
2. Parses declare module '@callstack/brownie' blocks using ts-morph
3. Extracts store names from BrownieStores interface
4. Generates native types using quicktype