feat(cmds): add subcommands init, pack, publish

src/main.rs

@@ -11,15 +11,26 @@ use std::io::prelude::*;
 /// 📦 ✨  pack and publish your wasm!
 #[derive(Debug, StructOpt)]
 struct Cli {
-    /// ☔  init and pack, but don't publish
-    #[structopt(long = "dry-run", short = "d")]
-    dry_run: bool,
-
+    #[structopt(subcommand)] // Note that we mark a field as a subcommand
+    cmd: Command,
     /// 📝  log all the things!
     #[structopt(long = "verbose", short = "v", parse(from_occurrences))]
     verbosity: u8,
 }
 
+#[derive(Debug, StructOpt)]
+enum Command {
+    #[structopt(name = "init")]
+    /// 🐣  initialize a package.json based on your compiled wasm
+    Init {},
+    #[structopt(name = "pack")]
+    /// 🍱  create a tar of your npm package but don't publish!
+    Pack {},
+    #[structopt(name = "publish")]
+    /// 🎆  pack up your npm package and publish!
+    Publish {},
+}
+
 #[derive(Deserialize)]
 pub struct CargoManifest {
     package: CargoPackage,
@@ -66,10 +77,15 @@ fn write_package_json() -> Result<()> {
     Ok(())
 }
 
-main!(|args: Cli, log_level: verbosity| {
-    write_package_json()?;
-    println!("✍️  wrote package.json");
-    if !args.dry_run {
-        println!("⬆️  published pkg to npm");
+main!(|args: Cli, log_level: verbosity| match args.cmd {
+    Command::Init { .. } => {
+        write_package_json()?;
+        println!("✍️  wrote a package.json!");
+    }
+    Command::Pack { .. } => {
+        println!("🎒  packed up your pacakge!");
+    }
+    Command::Publish { .. } => {
+        println!("💥  published your package!");
     }
 });