Function main

components/runtime/build.rs:10–45

Example custom build script.

()

// Example custom build script.
fn main() {
    // Tell Cargo that if the given file changes, to rerun this build script.
    println!("cargo:rerun-if-changed=src/ts");

    // let files = vec!["op_wrappers", "core_util", "jack"];

    let compiled_files = compile_folder(Path::new("./src/ts/"));

    // create a lazy static file with a mapping of all the modules
    let header = format!(
        r#"
    ::lazy_static::lazy_static! {{
        pub static ref MODULE_MAP: [(::url::Url, &'static str);{}] = [
            (::url::Url::parse("file:///script_globals.js").unwrap(), "export {{}}"),
            "#,
        compiled_files.len() + 1
    );
    let footer = r#"];
    }"#;

    let mut body = String::new();

    for (i, f) in compiled_files.iter().enumerate() {
        body.push_str(&format!(
            r#"(::url::Url::parse("file:///{f}.js").unwrap(), include_js!("{f}.js"))"#
        ));
        if i != compiled_files.len() - 1 {
            body.push(',');
        }
        body.push('\n');
    }

    let full = format!("{header}{body}{footer}");
    let out_dir = PathBuf::from(std::env::var("OUT_DIR").unwrap());
    fs::write(out_dir.join("module_map.rs"), full).unwrap();
}

// compiles a folder of typescript files recursively, returning a list of files its compiled
fn compile_folder(path: &Path) -> Vec<String> {