microsandbox-types 0.5.10

Shared task and wire contract types for microsandbox.
Documentation 
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//! Generate checked TypeScript bindings for microsandbox shared types.

use std::env;
use std::fs;
use std::path::PathBuf;

//--------------------------------------------------------------------------------------------------
// Types
//--------------------------------------------------------------------------------------------------

struct Target {
    label: &'static str,
    path: PathBuf,
}

//--------------------------------------------------------------------------------------------------
// Functions
//--------------------------------------------------------------------------------------------------

fn main() {
    let check = env::args().skip(1).any(|arg| arg == "--check");
    let generated = microsandbox_types::typescript::render_bindings();
    let targets = targets();

    if check {
        check_targets(&targets, &generated);
    } else {
        write_targets(&targets, &generated);
    }
}

fn targets() -> Vec<Target> {
    let manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
    let package_root = manifest_dir
        .parent()
        .expect("microsandbox-types rust crate should live under <package>/rust");

    vec![Target {
        label: "microsandbox-types TypeScript package bindings",
        path: package_root.join("typescript/src/index.ts"),
    }]
}

fn check_targets(targets: &[Target], generated: &str) {
    let mut stale = Vec::new();

    for target in targets {
        let current = fs::read_to_string(&target.path).unwrap_or_default();
        if current != generated {
            stale.push(target);
        }
    }

    if stale.is_empty() {
        return;
    }

    for target in stale {
        eprintln!("{} is stale: {}", target.label, target.path.display());
    }
    eprintln!(
        "run `cargo run -p microsandbox-types --features ts --bin microsandbox-types-generate` to refresh generated bindings"
    );
    std::process::exit(1);
}

fn write_targets(targets: &[Target], generated: &str) {
    for target in targets {
        if let Some(parent) = target.path.parent() {
            fs::create_dir_all(parent).unwrap_or_else(|err| {
                panic!("failed to create {}: {err}", parent.display());
            });
        }
        fs::write(&target.path, generated).unwrap_or_else(|err| {
            panic!("failed to write {}: {err}", target.path.display());
        });
        println!("wrote {}", target.path.display());
    }
}