Render custom 404 page for sapper

netlify.toml

@@ -0,0 +1,4 @@
+[[redirects]]
+  from = "/*"
+  to = "/404.html"
+  status = 404

package.json

@@ -5,7 +5,8 @@
   "scripts": {
     "dev": "sapper dev",
     "build": "sapper build --legacy",
-    "export": "sapper export --legacy --entry \"/ login signup courses dashboard discussions people timetable profile discussions\"",
+    "export": "sapper export --legacy --entry \"/ /404 login signup courses dashboard discussions people timetable profile discussions\"",
+    "postexport": "mv __sapper__/export/404/index.html __sapper__/export/404.html",
     "start": "node __sapper__/build"
   },
   "dependencies": {

src/routes/404.svelte

@@ -0,0 +1,6 @@
+<script>
+  import { stores, goto } from '@sapper/app';
+  const { page } = stores();
+
+  $: console.log('route', $page);
+</script>

static/_redirects

@@ -1 +0,0 @@
-/*    /index.html   200