Restore decorate option to typings

Author: kanongil

lib/index.d.ts

@@ -60,6 +60,11 @@ export interface Options<Data> {
      */
     readonly data?: Data;
 
+    /**
+     * An object with extra properties to set on the error object
+     */
+    readonly decorate?: { [key: string]: any };
+
     /**
      * An object containing any HTTP headers where each key is a header name and value is the header content
      */
@@ -149,10 +154,11 @@ export function isBoom(obj: unknown, statusCode?: number): obj is Boom;
 *
 * @returns A boom object
 */
-export function boomify<Data>(err: Boom<Data>, options?: BoomifyOptions<Data>): Boom<Data>;
+export function boomify<Data, Decoration>(err: Boom<Data>, options?: BoomifyOptions<Data> & { decorate: Decoration }): Boom<Data> & Decoration;
+export function boomify<Data, Decoration>(err: unknown, options?: BoomifyOptions<Data> & { decorate: Decoration }): Boom<Data> & Decoration;
+export function boomify<Data extends object>(err: Boom<Data>, options?: BoomifyOptions<Data>): Boom<Data>;
 export function boomify<Data>(err: unknown, options?: BoomifyOptions<Data>): Boom<Data>;
 
-
 // 4xx Errors
 
 /**

test/index.ts

@@ -15,14 +15,17 @@ class X {
 };
 
 
+const decorate = new X(1);
+
 // new Boom.Boom()
 
 expect.type<Boom.Boom>(new Boom.Boom());
 expect.type<Error>(new Boom.Boom());
 expect.type<Boom.Boom>(new Boom.Boom('error'));
+expect.type<Boom.Boom>(new Boom.Boom('error', { decorate }));
 
-expect.error<Boom.Boom>(null);
-expect.error<Boom.Boom>(new Boom.Boom(new Error('error')));
+expect.error(new Boom.Boom(null));
+expect.error(new Boom.Boom(new Error('error')));
 
 
 class CustomError extends Boom.Boom {}
@@ -50,14 +53,16 @@ const error = new Error('Unexpected input');
 
 expect.type<Boom.Boom>(Boom.boomify(error, { statusCode: 400 }));
 expect.type<Boom.Boom>(Boom.boomify(error, { statusCode: 400, message: 'Unexpected Input', override: false }));
+expect.type<number>(Boom.boomify(error, { decorate }).x);
 expect.type<Boom.Boom>(Boom.boomify('error'));
 expect.type<Boom.Boom<{ foo: 'bar' }>>(Boom.boomify(new Boom.Boom<{ foo: 'bar' }>()));
 
 expect.error(Boom.boomify(error, { statusCode: '400' }));
 expect.error(Boom.boomify(error, { statusCode: 400, message: true }));
 expect.error(Boom.boomify(error, { statusCode: 400, override: 'false' }));
 expect.error(Boom.boomify());
-
+expect.error(Boom.boomify(error, { decorate: true }));
+expect.error(Boom.boomify(error, { decorate }).y);
 
 // isBoom