From 0a4ba4e362e730d9c3cde37d71d959fcc0aa55dd Mon Sep 17 00:00:00 2001
From: Anton Nemtsev <thesilentimp@gmail.com>
Date: Tue, 11 Feb 2020 11:28:09 +0100
Subject: [PATCH] turning off prefetch for pages that not in the routes list

---
 __tests__/index.spec.js | 5 +++++
 src/index.js            | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/__tests__/index.spec.js b/__tests__/index.spec.js
index 5719863..43b6079 100644
--- a/__tests__/index.spec.js
+++ b/__tests__/index.spec.js
@@ -50,6 +50,11 @@ describe('UrlPrettifier getPrettyUrl', (): void => {
     expect(router.getPrettyUrl('unknownPage', {id: 1}))
       .toEqual({href: '/unknownPage?id=1'});
   });
+
+  it('should return href and prefetch equal to false if the route does not exist', (): void => {
+    expect(router.getPrettyUrl('unknownPage', {id: 1, preventPrefetchIfNoRoute: true}))
+      .toEqual({href: '/unknownPage?id=1', prefetch: false});
+  });
 });
 
 describe('UrlPrettifier getPrettyUrlPatterns (DEPRECATED)', (): void => {
diff --git a/src/index.js b/src/index.js
index cb3b681..cdcc963 100644
--- a/src/index.js
+++ b/src/index.js
@@ -36,11 +36,12 @@ export default class UrlPrettifier<T: string> {
     ;
   }
 
-  getPrettyUrl(pageName: T, params: ParamType): RouteLinkParamsType {
+  getPrettyUrl(pageName: T, {preventPrefetchIfNoRoute = false, ...params}: {preventPrefetchIfNoRoute: boolean, params: ParamType}): RouteLinkParamsType {
     const route: ?RouteType<T> = this.routes.filter((currentRoute: RouteType<T>): boolean =>
       currentRoute.page === pageName)[0];
     return {
       href: `/${pageName}${this.paramsToQueryString(params)}`,
+      ...(preventPrefetchIfNoRoute && !route && {prefetch: false}),
       ...(route && route.prettyUrl
         ? {as: typeof route.prettyUrl === 'string' ? route.prettyUrl : route.prettyUrl(params)}
         : {}