mf2-build

The MessageFormat 2 build pipeline: from a directory of message resources, per language, to what an application ships — the manifest, one binary catalog per locale, and a generated Rust module with the application's tr! macro. It checks every message and reports what a translation is missing or gets wrong.

A translation crate's build.rs runs it:

fn main() -> Result<(), Box<dyn std::error::Error>> {
    mf2_build::Build::new()?.emit_cargo(true).run()?.into_result()?;
    Ok(())
}

The mf2 command (mf2-cli) creates such a crate (mf2 init) and runs the same checks from the command line.

API documentation: https://docs.rs/mf2-build.

The user guide — getting started, call sites, delivery modes, switching language, accessibility and migrating from leptos-fluent — is in the docs/ directory of the mf2-two repository.

Versions: every mf2-two crate is released together, and 1.x keeps the promise docs/versioning.md states; the minimum Rust version is 1.88.

License

MIT (LICENSE).