feat(napi): support static class factory

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

@@ -48,9 +48,14 @@ Generated by [AVA](https://avajs.dev).
     export class Animal {␊
       readonly kind: Kind␊
       constructor(kind: Kind, name: string)␊
+      static withKind(kind: Kind): Animal␊
       get name(): string␊
       set name(name: string)␊
       whoami(): string␊
       static getDogKind(): Kind␊
     }␊
+    export class ClassWithFactory {␊
+      name: string␊
+      static withName(name: string): ClassWithFactory␊
+    }␊
     `

examples/napi/__test__/values.spec.ts

@@ -15,6 +15,7 @@ import {
   getCwd,
   Animal,
   Kind,
+  ClassWithFactory,
   CustomNumEnum,
   enumToI32,
   listObjKeys,
@@ -81,6 +82,20 @@ test('class', (t) => {
   t.is(dog.name, '可乐')
 })
 
+test('class factory', (t) => {
+  const duck = ClassWithFactory.withName('Default')
+  t.is(duck.name, 'Default')
+
+  duck.name = '周黑鸭'
+  t.is(duck.name, '周黑鸭')
+
+  const doge = Animal.withKind(Kind.Dog)
+  t.is(doge.name, 'Default')
+
+  doge.name = '旺财'
+  t.is(doge.name, '旺财')
+})
+
 test('callback', (t) => {
   getCwd((cwd) => {
     t.is(cwd, process.cwd())

examples/napi/index.d.ts

@@ -38,8 +38,13 @@ export function getBuffer(): Buffer
 export class Animal {
   readonly kind: Kind
   constructor(kind: Kind, name: string)
+  static withKind(kind: Kind): Animal
   get name(): string
   set name(name: string)
   whoami(): string
   static getDogKind(): Kind
 }
+export class ClassWithFactory {
+  name: string
+  static withName(name: string): ClassWithFactory
+}

examples/napi/src/class.rs

@@ -19,6 +19,14 @@ impl Animal {
     Animal { kind, name }
   }
 
+  #[napi(factory)]
+  pub fn with_kind(kind: Kind) -> Self {
+    Animal {
+      kind,
+      name: "Default".to_owned(),
+    }
+  }
+
   #[napi(getter)]
   pub fn get_name(&self) -> &str {
     self.name.as_str()

examples/napi/src/class_factory.rs

@@ -0,0 +1,14 @@
+use napi::bindgen_prelude::*;
+
+#[napi]
+pub struct ClassWithFactory {
+  pub name: String,
+}
+
+#[napi]
+impl ClassWithFactory {
+  #[napi(factory)]
+  pub fn with_name(name: String) -> Self {
+    Self { name }
+  }
+}

examples/napi/src/lib.rs

@@ -7,6 +7,7 @@ mod array;
 mod r#async;
 mod callback;
 mod class;
+mod class_factory;
 mod either;
 mod r#enum;
 mod error;