wrap in an init

README.md

@@ -47,9 +47,12 @@ You can generate code from this like so:
 $ elm-duet examples/jwt_schema.json
 // Warning: this file is automatically generated. Don't edit by hand!
 
-{
+(config: {
+  flags: {
   currentJwt: string;
-}
+};
+  node: HTMLElement;
+}): void
 
 ```
 

src/schema.rs

@@ -30,7 +30,7 @@ impl Schema {
                 .wrap_err("could not interpret JTD schema for flags")?;
 
             buffer.push('\n');
-            buffer.push_str(&typescript::TSType::from_schema(flags).to_source())
+            buffer.push_str(&typescript::TSType::from_schema(flags).to_init().to_source())
         }
 
         Ok(buffer)

src/typescript.rs

@@ -81,6 +81,20 @@ impl TSType {
     fn new_function(args: BTreeMap<String, TSType>) -> Self {
         Self::FunctionReturningVoid(args)
     }
+
+    fn new_init(flags: TSType) -> Self {
+        Self::new_function(BTreeMap::from([(
+            "config".to_string(),
+            Self::Object(BTreeMap::from([
+                ("node".to_string(), Self::Scalar("HTMLElement")),
+                ("flags".to_string(), flags),
+            ])),
+        )]))
+    }
+
+    pub fn to_init(self) -> Self {
+        Self::new_init(self)
+    }
 }
 
 #[cfg(test)]

tests/cmd/generate_ts.md

@@ -6,9 +6,12 @@ You can generate TypeScript types like this:
 $ elm-duet tests/schema.json
 // Warning: this file is automatically generated. Don't edit by hand!
 
-{
+(config: {
+  flags: {
   currentTimeMillis: number;
   notificationPermission: "default" | "denied" | "granted";
-}
+};
+  node: HTMLElement;
+}): void
 
 ```