add unit test that shows Date is rendered in TS type in interface

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

@@ -43,6 +43,10 @@ Generated by [AVA](https://avajs.dev).
     export function dateToNumber(input: Date): number␊
     export function chronoDateToMillis(input: Date): number␊
     export function chronoDateAdd1Minute(input: Date): Date␊
+    export interface Dates {␊
+      start: Date␊
+      end?: Date | undefined | null␊
+    }␊
     export function eitherStringOrNumber(input: string | number): number␊
     export function returnEither(input: number): string | number␊
     export function either3(input: string | number | boolean): number␊

examples/napi/index.d.ts

@@ -33,6 +33,10 @@ export function returnJsFunction(): (...args: any[]) => any
 export function dateToNumber(input: Date): number
 export function chronoDateToMillis(input: Date): number
 export function chronoDateAdd1Minute(input: Date): Date
+export interface Dates {
+  start: Date
+  end?: Date | undefined | null
+}
 export function eitherStringOrNumber(input: string | number): number
 export function returnEither(input: number): string | number
 export function either3(input: string | number | boolean): number

examples/napi/src/date.rs

@@ -15,3 +15,9 @@ fn chrono_date_to_millis(input: chrono::DateTime<Utc>) -> i64 {
 fn chrono_date_add_1_minute(input: chrono::DateTime<Utc>) -> chrono::DateTime<Utc> {
   input + Duration::minutes(1)
 }
+
+#[napi(object)]
+pub struct Dates {
+  pub start: chrono::DateTime<Utc>,
+  pub end: Option<chrono::DateTime<Utc>>,
+}