In your Cargo.toml:

```toml
# Feature: typescript
ts-rs = { workspace = true, features = ["bytes-impl"], optional = true }

[features]
typescript = [
    "dep:ts-rs",
]
```

In your library code:

```rust
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
#[cfg_attr(feature = "typescript", derive(ts_rs::TS))]
#[cfg_attr(feature = "typescript", ts(export))]
pub struct Bundle {
    pub app_id: String,
    pub version: u32,
    pub app: Bytes,
}
```

In a binary project that depends on the library:

```rust
use bundle::Bundle;
use ts_rs::TS;

fn main() {
    Bundle::export_all_to("./@lib/pack").unwrap()
}
```

Then you can run the binary, and check in the generated types.