throw if napi function returns Err variant of Result<T>

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

@@ -16,7 +16,7 @@ Generated by [AVA](https://avajs.dev).
     export enum Kind { Dog = 0, Cat = 1, Duck = 2 }␊
     export enum CustomNumEnum { One = 1, Two = 2, Three = 3, Four = 4, Six = 6, Eight = 8, Nine = 9, Ten = 10 }␊
     export function enumToI32(e: CustomNumEnum): number␊
-    export function getError(): Error | undefined␊
+    export function throwError(): void␊
     export function mapOption(val: number | null): number | null␊
     export function add(a: number, b: number): number␊
     export function fibonacci(n: number): number␊

examples/napi/__test__/values.spec.ts

@@ -19,7 +19,7 @@ import {
   createObj,
   mapOption,
   readFile,
-  getError,
+  throwError,
 } from '../'
 
 test('number', (t) => {
@@ -98,7 +98,5 @@ test('Option', (t) => {
 })
 
 test('Result', (t) => {
-  const error = getError()
-  t.not(error, undefined)
-  t.is(error!.message, 'Manual Error')
+  t.throws(() => throwError(), null, 'Manual Error')
 })

examples/napi/index.d.ts

@@ -6,7 +6,7 @@ export function readFile(callback: (arg0: Error | undefined, arg1: string | null
 export enum Kind { Dog = 0, Cat = 1, Duck = 2 }
 export enum CustomNumEnum { One = 1, Two = 2, Three = 3, Four = 4, Six = 6, Eight = 8, Nine = 9, Ten = 10 }
 export function enumToI32(e: CustomNumEnum): number
-export function getError(): Error | undefined
+export function throwError(): void
 export function mapOption(val: number | null): number | null
 export function add(a: number, b: number): number
 export function fibonacci(n: number): number

examples/napi/src/error.rs

@@ -1,6 +1,6 @@
 use napi::bindgen_prelude::*;
 
 #[napi]
-fn get_error() -> Result<()> {
+fn throw_error() -> Result<()> {
   Err(Error::new(Status::InvalidArg, "Manual Error".to_owned()))
 }