fix(generate): use structopt ya dingus

src/command/generate.rs

@@ -8,11 +8,8 @@ use PBAR;
 
 /// Executes the 'cargo-generate' command in the current directory
 /// which generates a new rustwasm project from a template.
-pub fn generate(template: Option<String>, name: Option<String>) -> result::Result<(), Error> {
+pub fn generate(template: String, name: String) -> result::Result<(), Error> {
     info!("Generating a new rustwasm project...");
-    let template =
-        template.unwrap_or_else(|| "https://github.com/rustwasm/wasm-pack-template".to_string());
-    let name = name.unwrap_or_else(|| "hello-wasm".to_string());
     let download = install::install(
         Tool::CargoGenerate,
         &cache::get_wasm_pack_cache()?,

src/command/mod.rs

@@ -39,9 +39,15 @@ pub enum Command {
     /// 🐑 create a new project with a template
     Generate {
         /// The URL to the template
-        template: Option<String>,
+        #[structopt(
+            long = "template",
+            short = "temp",
+            default_value = "https://github.com/rustwasm/wasm-pack-template"
+        )]
+        template: String,
         /// The name of the project
-        name: Option<String>,
+        #[structopt(long = "name", short = "n", default_value = "hello-wasm")]
+        name: String,
     },
 
     #[structopt(name = "publish")]