fix(napi): propagation error in function call (#1315)

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

@@ -43,6 +43,7 @@ Generated by [AVA](https://avajs.dev).
     export function readFile(callback: (arg0: Error | undefined, arg1?: string | undefined | null) => void): void␊
     export function returnJsFunction(): (...args: any[]) => any␊
     export function callbackReturnPromise<T>(functionInput: () => T | Promise<T>, callback: (err: Error | null, result: T) => void): T | Promise<T>␊
+    export function captureErrorInCallback(cb1: () => void, cb2: (arg0: Error) => void): void␊
     export interface ObjectFieldClassInstance {␊
       bird: Bird␊
     }␊

examples/napi/__test__/values.spec.ts

@@ -112,6 +112,7 @@ import {
   CustomFinalize,
   plusOne,
   Width,
+  captureErrorInCallback,
 } from '../'
 
 test('export const', (t) => {
@@ -290,6 +291,15 @@ test('callback', (t) => {
     t.is(err, undefined)
     t.is(content, 'hello world')
   })
+
+  captureErrorInCallback(
+    () => {
+      throw new Error('Testing')
+    },
+    (err) => {
+      t.is((err as Error).message, 'Testing')
+    },
+  )
 })
 
 test('return function', (t) => {

examples/napi/index.d.ts

@@ -33,6 +33,7 @@ export function optionOnly(callback: (arg0?: string | undefined | null) => void)
 export function readFile(callback: (arg0: Error | undefined, arg1?: string | undefined | null) => void): void
 export function returnJsFunction(): (...args: any[]) => any
 export function callbackReturnPromise<T>(functionInput: () => T | Promise<T>, callback: (err: Error | null, result: T) => void): T | Promise<T>
+export function captureErrorInCallback(cb1: () => void, cb2: (arg0: Error) => void): void
 export interface ObjectFieldClassInstance {
   bird: Bird
 }

examples/napi/src/callback.rs

@@ -80,3 +80,15 @@ fn callback_return_promise<T: Fn() -> Result<JsUnknown>>(
     Ok(ret)
   }
 }
+
+#[napi]
+pub fn capture_error_in_callback<C: Fn() -> Result<()>, E: Fn(Error) -> Result<()>>(
+  cb1: C,
+  cb2: E,
+) -> Result<()> {
+  if let Err(e) = cb1() {
+    cb2(e)
+  } else {
+    Ok(())
+  }
+}