Files
CodeNomad/packages/ui/vite.config.ts
Mateusz Popielarz 313e82880b feat(lazy loading): Implement virtual list with virtua (#241)
### Summary of Improvements

This PR replaces the custom `IntersectionObserver`-based virtualization
with the `virtua` library to significantly improve rendering performance
and UI responsiveness.

### 🚀 Performance Results

Verified using `session-performance.test.ts`:
- **Rendering**: 2000 messages rendered in **16.90ms**.
- **Huge Conversation**: 10,000 messages processed in **0.80ms**.
- **Session Switching**: Average switch time reduced to **0.58ms**
(virtually zero lag).

### 🛠️ Key Changes

- **Virtualized Message Stream**: Integrated `virtua/solid` for
efficient windowing and automatic scroll compensation.
- **Floating Scroll Controls**: Applied `position: absolute` and
`pointer-events: none` to the list controls to ensure
scroll-to-top/bottom buttons float correctly over the message area
without blocking interactions.
- **Package Synchronization**: Updated `virtua` and SDK dependencies,
with a fully synchronized `package-lock.json` for stable builds.

### 🎥 UI Verification


https://github.com/user-attachments/assets/24e483a3-8be6-4ac4-a431-d719f2015f4e


- **Smooth Scrolling**: Verified that rendering gaps are eliminated
during fast scrolls.
- **Position Retention**: Scroll positions are preserved when switching
between sessions.

> [!NOTE]
> Detailed performance gains and layout fixes are isolated to the
`virtua` implementation and core package updates, following the
requested cleanup.

---------

Co-authored-by: Shantur Rathore <i@shantur.com>
2026-03-20 22:46:05 +00:00

140 lines
4.5 KiB
TypeScript

import fs from "fs"
import { defineConfig } from "vite"
import solid from "vite-plugin-solid"
import { VitePWA } from "vite-plugin-pwa"
import { resolve } from "path"
import { copyMonacoPublicAssets } from "./scripts/monaco-public-assets.js"
const uiPackageJson = JSON.parse(fs.readFileSync(resolve(__dirname, "package.json"), "utf-8")) as { version?: string }
const uiVersion = uiPackageJson.version ?? "0.0.0"
export default defineConfig({
root: "./src/renderer",
plugins: [
solid(),
{
name: "prepare-monaco-public-assets",
// Ensure Monaco's AMD assets exist in `root/public` for both dev server and builds.
// These files are gitignored and generated on demand.
configureServer(server) {
copyMonacoPublicAssets({
uiRendererRoot: resolve(__dirname, "src/renderer"),
warn: (msg) => server.config.logger.warn(msg),
sourceRoots: [
resolve(__dirname, "../../node_modules/monaco-editor/min/vs"),
resolve(__dirname, "node_modules/monaco-editor/min/vs"),
],
})
},
buildStart() {
copyMonacoPublicAssets({
uiRendererRoot: resolve(__dirname, "src/renderer"),
warn: (msg) => this.warn(msg),
sourceRoots: [
resolve(__dirname, "../../node_modules/monaco-editor/min/vs"),
resolve(__dirname, "node_modules/monaco-editor/min/vs"),
],
})
},
},
{
name: "emit-ui-version",
generateBundle() {
this.emitFile({
type: "asset",
fileName: "ui-version.json",
source: JSON.stringify({ uiVersion }, null, 2),
})
},
},
{
name: "prepare-pwa-source-icon",
apply: "build",
buildStart() {
// vite-pwa-assets requires the source image inside root/public/
const source = resolve(__dirname, "src/images/CodeNomad-Icon.png")
const publicDir = resolve(__dirname, "src/renderer/public")
const dest = resolve(publicDir, "logo.png")
fs.mkdirSync(publicDir, { recursive: true })
fs.copyFileSync(source, dest)
},
},
VitePWA({
registerType: "autoUpdate",
injectRegister: "auto",
pwaAssets: {
preset: "minimal-2023",
image: "public/logo.png",
},
manifest: {
name: "CodeNomad",
short_name: "CodeNomad",
id: "/",
start_url: "/",
display: "standalone",
display_override: ["window-controls-overlay", "standalone"],
background_color: "#1a1a1a",
theme_color: "#1a1a1a",
},
workbox: {
// Workbox defaults to 2 MiB; our main bundle can slightly exceed that.
// This is a build-time limit for the precache manifest, not a hard runtime cap.
maximumFileSizeToCacheInBytes: 3 * 1024 * 1024,
// Preserve server-side auth redirects (e.g., /login) instead of serving cached index.html.
navigateFallback: null,
// Only precache static assets (avoid caching HTML documents / routes).
globPatterns: ["**/*.{js,css,png,jpg,jpeg,svg,webp,ico,woff,woff2,ttf,eot,json,webmanifest}"],
// Monaco assets can be large; cache them at runtime instead.
globIgnores: [
"**/*.html",
"**/assets/*worker-*.js",
"**/assets/editor.api-*.js",
"**/monaco/vs/**/*",
],
// Only cache static UI assets; never cache API traffic.
runtimeCaching: [
{
urlPattern: ({ url, request }) => {
if (url.pathname.startsWith("/api/")) return false
if (request.destination === "document") return false
return ["script", "style", "image", "font"].includes(request.destination)
},
handler: "CacheFirst",
options: {
cacheName: "asset-cache",
expiration: { maxEntries: 200, maxAgeSeconds: 60 * 60 * 24 * 30 },
cacheableResponse: { statuses: [0, 200] },
},
},
],
},
}),
],
css: {
postcss: "./postcss.config.js",
},
resolve: {
alias: {
"@": resolve(__dirname, "./src"),
},
},
optimizeDeps: {
exclude: ["lucide-solid"],
},
ssr: {
noExternal: ["lucide-solid"],
},
server: {
port: 3000,
},
build: {
outDir: "dist",
rollupOptions: {
input: {
main: resolve(__dirname, "./src/renderer/index.html"),
loading: resolve(__dirname, "./src/renderer/loading.html"),
},
},
},
})