Add index.ts with export for all bindings.

[lab360-ch]

Hi

Would it be possible to also generate an index.ts inside the bindings directory?

example

When I have the following structs:

#[derive(Serialize, Debug, TS)]
#[ts(
    export,
    export_to = "bindings/admin/login-response.ts",
    rename = "AdminLoginResponse"
)]
struct LoginResponse {
    access_token: String,
    expires_in: i64,
    token_type: String,
}

#[derive(Deserialize, Validate, Debug, TS)]
#[ts(
    export,
    export_to = "bindings/admin/login-request.ts",
    rename = "AdminLoginRequest"
)]
struct LoginRequest {
    #[validate(email(message = "invalid email"))]
    email: String,
    #[validate(length(min = 8))]
    password: String,
}

I would like to have a index.ts generated inside the bindings directory, that looks like:

export * from './admin/login-request';
export * from './admin/login-response';

So I could add the following configuration to my tsconfig.json:

{
  ...
  "compilerOptions": {
    ...
    "paths": {
      "@my-project/backend": ["backend/bindings/index.ts"],
    }
  }
}

this allows me to import all the exported types in my typescript code like this:

import { AdminLoginRequest, AdminLoginResponse } from '@my-project/backend';

[wiredmatt]

Pretty sure we could just use export_to = '../bindings/index.ts' in every struct as per this.

[bram209]

as a workaround, I am currently doing this in build.rs:

use std::{
    ffi::OsStr,
    fs::{self, File},
    io::Write,
};

fn main() {
    let exports: Vec<_> = fs::read_dir("./bindings")
        .unwrap()
        .filter_map(Result::ok)
        .filter_map(|p| {
            p.path()
                .file_stem()
                .map(OsStr::to_str)
                .flatten()
                .map(str::to_owned)
        })
        .filter(|f| f != "index")
        .map(|f| format!("export * from \"./{}\"", f))
        .collect();

    let mut file = File::create("./bindings/index.ts").unwrap();
    file.write_all(exports.join("\n").as_bytes()).unwrap();
}

[escritorio-gustavo]

Currently the plan is to create a CLI tool to allow this

[escritorio-gustavo]

To anyone who sees this issue and is interested in the feature, please try the CLI being developed in #304 and tell us what you think.

To try it you need to clone the cli branch and build the project with cargo build --release. Then run ./target/release/cargo-ts --index --output <BINDINGS_DIRECTORY>.

When we decide the CLI is complete, it will be available through cargo install but for now, it must be downloaded and built manually