Upgrade SvelteKit specific files

.eslintignore

+.DS_Store
+node_modules
+/build
+/.svelte-kit
+/package
+.env
+.env.*
+!.env.example
+
+# Ignore files for PNPM, NPM and YARN
+pnpm-lock.yaml
+package-lock.json
+yarn.lock

.eslintrc.cjs

@@ -15,7 +15,7 @@ module.exports = {
   parser: "@typescript-eslint/parser",
   parserOptions: {
     sourceType: "module",
-    ecmaVersion: 2019,
+    ecmaVersion: 2020,
   },
   root: true,
   settings: {

package.json

@@ -3,10 +3,10 @@
   "version": "0.0.288",
   "scripts": {
     "build": "NODE_OPTIONS=--max_old_space_size=4096 vite build",
-    "check": "svelte-check --tsconfig ./tsconfig.json",
-    "check:watch": "svelte-check --tsconfig ./tsconfig.json --watch",
+    "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+    "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
     "dev": "vite dev",
-    "format": "prettier --write --plugin-search-dir=. .",
+    "format": "prettier --plugin-search-dir=. --write .",
     "lint": "prettier --check --plugin-search-dir=. . && eslint --ignore-path .gitignore .",
     "preview": "vite preview",
     "test": "playwright test"

svelte.config.js

-import node from "@sveltejs/adapter-node"
+import adapter from "@sveltejs/adapter-node"
 import preprocess from "svelte-preprocess"
 
 /** @type {import('@sveltejs/kit').Config} */
-const svelteKitConfig = {
+const config = {
   kit: {
     // By default, `npm run build` will create a standard Node app.
     // You can create optimized builds for different platforms by
     // specifying a different adapter
-    adapter: node({
+    adapter: adapter({
       precompress: true,
     }),
 
@@ -19,7 +19,11 @@ const svelteKitConfig = {
 
   // Consult https://github.com/sveltejs/svelte-preprocess
   // for more information about preprocessors
-  preprocess: [preprocess({})],
+  preprocess: [
+    preprocess({
+      postcss: true,
+    }),
+  ],
 }
 
-export default svelteKitConfig
+export default config

tsconfig.json

@@ -8,6 +8,10 @@
     "resolveJsonModule": true,
     "skipLibCheck": true,
     "sourceMap": true,
-    "strict": false
+    "strict": true
   }
+  // Path aliases are handled by https://kit.svelte.dev/docs/configuration#alias
+  //
+  // If you want to overwrite includes/excludes, make sure to copy over the relevant includes/excludes
+  // from the referenced tsconfig.json - TypeScript does not merge them in
 }

vite.config.js → vite.config.ts

 import { sveltekit } from "@sveltejs/kit/vite"
+import type { UserConfig } from "vite"
 
-/** @type {import('vite').UserConfig} */
-const config = {
+const config: UserConfig = {
   build: {
     // Increase size of chunks to 5 MB, to be able to import
     // JSON files extracted from OpenFisca country package.