fix(napi-derive): return Class instance in function

crates/backend/src/codegen/struct.rs

@@ -163,7 +163,7 @@ impl NapiStruct {
 
   fn gen_to_napi_value_ctor_impl(&self) -> TokenStream {
     let name = &self.name;
-    let js_name_str = &self.js_name;
+    let js_name_str = format!("{}\0", &self.js_name);
 
     let mut field_conversions = vec![];
     let mut field_destructions = vec![];

examples/napi/__test__/typegen.spec.ts.md

@@ -144,6 +144,11 @@ Generated by [AVA](https://avajs.dev).
       whoami(): string␊
       /** This is static... */␊
       static getDogKind(): Kind␊
+      returnOtherClass(): Dog␊
+    }␊
+    export class Dog {␊
+      name: string␊
+      constructor(name: string)␊
     }␊
     /** Smoking test for type generation */␊
     export class Blake2BHasher {␊

examples/napi/__test__/values.spec.ts

@@ -69,6 +69,7 @@ import {
   appendBuffer,
   returnNull,
   returnUndefined,
+  Dog,
 } from '../'
 
 test('export const', (t) => {
@@ -125,6 +126,7 @@ test('class', (t) => {
 
   dog.name = '可乐'
   t.is(dog.name, '可乐')
+  t.deepEqual(dog.returnOtherClass(), new Dog('Doge'))
 })
 
 test('class factory', (t) => {

examples/napi/index.d.ts

@@ -134,6 +134,11 @@ export class Animal {
   whoami(): string
   /** This is static... */
   static getDogKind(): Kind
+  returnOtherClass(): Dog
+}
+export class Dog {
+  name: string
+  constructor(name: string)
 }
 /** Smoking test for type generation */
 export class Blake2BHasher {

examples/napi/src/class.rs

@@ -60,6 +60,18 @@ impl Animal {
   pub fn get_dog_kind() -> Kind {
     Kind::Dog
   }
+
+  #[napi]
+  pub fn return_other_class(&self) -> Dog {
+    Dog {
+      name: "Doge".to_owned(),
+    }
+  }
+}
+
+#[napi(constructor)]
+pub struct Dog {
+  pub name: String,
 }
 
 /// Smoking test for type generation