I am trying to figure it how to debug the server side to do some modifications to the default sapper template, I followed the instructions to debug the server side from the docs, and the ndb opens ...

This is more of a service worker question, although it could be more specific to Sapper. I really don't know, as I am the first to admin I struggle with Service Workers, have barely used them, and ...

Our company produces an automation framework that is written in svelte/sapper. One feature is that developers can create custom ui widgets, currently using plain js/html/css and our client side api...

I need to set up a Polka (or Express) server so that it can serve multiple applications (one per hostname) from a single server.js entry point. It can be done using the vhost middleware (https://gi...

I am trying to load sv-bootstrap-dropdown module in nav.svelte component but I am getting the error <Dropdown> is not a valid SSR component. You may need to review your build config to ensure...

I've got a component in the sapper template with pagination. Currently all links are behaving as though they're relative to root (localhost:3000/ in this case) regardless of whether the href is in ...

I've just recently started using svelte and sapper, and I'm trying to persist a stored session even when a user refreshes the page. (I hope this can be done). The idea is that a user can sign in, a...

My question is very simple. How do you prevent, e.g. non authorized user, to enter specific routes in sapper? user.svelte <script> import { onMount } from 'svelte'; onMount(() => { i...

In Sapper I am trying to import a component only if being rendered client side (using onMount). Is there something similar to React Suspense and React.lazy? Or is there another approach?

I am trying to implement in Sapper what is done in the next.js example called with-route-as-modal. What it does is that when clicking on a link, the new page is shown in a modal instead of replaci...

When i'm trying to change data dynamically of the each loop variable is not refreshing the DOM elements. How I can redraw the each loop values <script> // default messages object let messag...

I'm trying to create a login form using sapper, but am encountering the following problem when trying to test a basic POST fetch. In routes/login/login.svelte, I have the following code which is ca...

Learning how to use Sapper. I have a component with form (the form has one field to enter an email address) and use fetch to post the data to the serverhandle. When I post the data and try to log t...

We are having a problem where on click is adding a class to a div but the classes CSS doesn't get add to the div. It just adds the class. <script> function handleClick() { document.getEleme...

With the following code: <svelte:head> <script type='application/ld+json'> { "@context": "https://schema.org", "@type": "Organization", "url": "https://filestar.com", "logo": "ht...

I am trying to get the Winston logging library working with my Sapper app. That Sapper app uses Rollup as module bundler. To implement my app, I basically followed the following steps: Start new S...

I used passportjs in the past with expressjs and currently I'm trying to incorporate it with Sapper app but I'm unable to figure out how to inlcude the passport.authenticate() in my route because i...

In my sapper app, I have some data stored in a json file at src/data/videoslist.json, an array of objects in json format. I need to retrive the data in my index page to pass it to the component. H...

I need to redirect users to login page if they are not authenticated. I need something like route.beforeEach in Vue.js, ideally: sapper.beforeRouteChange((to, from, next) => { const isAuth = ...

In Svelte you can pass props to the content in a slot. <Component let:message="Hello!"> <div> {message} </div> </Component> When Sapper uses a layout to render a route...

I'm using sapper and stripejs. After installing stripejs using the command "npm install stripe --save" and followed the npm instruction to use the package: import Stripe from 'stripe'; const str...

I wrote a Sapper app with session management following the RealWorld example: polka() .use(bodyParser.json()) .use(session({ name: 'kidways-app', secret: 'conduit', resave: false, saveUninit...

Say I have a blog route that loads a complete array of all blog posts. The individual blog posts live at blog/[postId]. Is there a Sapper-idiomatic way to pass the data for the individual post from...

I am using svelte/sapper with express. I have an api in routes/billing/index.js It needs to fetch data from customers/[customernumber]/detections.js My question is how to fetch data from inter...

I'm working on a Sapper project and I'd like to load in some async data into the layout before loading in the slots. I've found that within a _layout.svelte file, I'm unable to pass props to the sl...