Function transform_sync 

pub fn transform_sync(
    _env: Env,
    code: String,
    filepath: String,
) -> Result<TransformResult>

Synchronously transforms TypeScript code through the macro expansion system.

This is similar to expand_sync but returns a TransformResult which includes source map information (when available).

Arguments

• _env - NAPI environment (unused but required by NAPI)
• code - The TypeScript source code to transform
• filepath - The file path (used for TSX detection)

Returns

A TransformResult containing the transformed code and metadata.

Errors

Returns an error if:

• Thread spawning fails
• The worker thread panics
• Macro expansion fails

Thread Safety

Uses a 32MB thread stack to prevent stack overflow during deep AST recursion.