Upgrade to Svelte 5.45.8 and migrate from Snowpack to Vite

[Copilot]

Upgrades from Svelte 3.46.4 to 5.45.8. Snowpack is deprecated and incompatible with Svelte 5, requiring migration to Vite.

Changes

• Build system: Snowpack → Vite 6.0.11

  • Created vite.config.js
  • Moved index.html to root
  • Converted postcss.config.js and tailwind.config.js to ES modules

• Dependencies:

  • svelte: 3.46.4 → 5.45.8
  • svelte-select: 3.17.0 → 5.8.3
  • Added @sveltejs/vite-plugin-svelte@5.0.4
  • Removed svelte-preprocess, @snowpack/* packages

• Testing libraries (updated to latest versions):

  • @web/test-runner: 0.12.17 → 0.20.2
  • chai: 4.2.0 → 6.2.1
  • mocha: 9.2.2 → 11.7.5
  • Added playwright@1.49.1, @web/test-runner-playwright@0.11.1

• CI/CD:

  • Updated GitHub Actions workflow to use Playwright for browser testing
  • Simplified CI configuration with npx playwright install --with-deps chromium
  • Deploy step runs on main branch and copilot/upgrade-to-latest-svelte branch pushes

• Code updates:

  • Updated component instantiation to Svelte 5 API:

    // Before
    let app = new App({ target: document.body });
    
    // After
    import { mount } from "svelte";
    const app = mount(App, { target: document.body });

Screenshot

Application running on Svelte 5:

Notes

• Svelte components use backward-compatible APIs (createEventDispatcher, on: directives) which work in Svelte 5
• Build warnings about accessibility are pre-existing
• All 12 tests passing with Playwright Chromium
• CI build and tests configured to run successfully on GitHub Actions
• GitHub Pages deployment enabled for this branch to preview changes before merging

> [!WARNING]
>
>

Original prompt

Upgrade this project to use the latest svelte version.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[caged]

@copilot update the testing libraries like puppeteer and related code.

[Copilot]

@copilot update the testing libraries like puppeteer and related code.

Updated testing libraries to latest versions in commit 9811d1c:

• @web/test-runner: 0.12.17 → 0.20.2
• chai: 4.2.0 → 6.2.1
• mocha: 9.2.2 → 11.7.5

All 12 tests passing with the updated versions.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• accounts.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3543 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-bIYLgv --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,9678276692897935353,14320042909369428898,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=PaintHolding,TranslateUI --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome-stable --disable-REDACTED-networking --enable-features=NetworkService,NetworkServiceInProcess --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=TranslateUI --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --disable-sync --force-color-profile=srgb --metrics-recording-only (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3929 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-lNi2g7 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,6187394557927837224,7594370874217403009,262144 --enable-features=PdfOopif --disable-features=AcceptCHFrame,IsolateSandboxedIframes,MediaRouter,OptimizationHints,PaintHolding,ProcessPerSiteUpToMainFrameThreshold,RenderDocument,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• clients2.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3543 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-bIYLgv --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,9678276692897935353,14320042909369428898,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=PaintHolding,TranslateUI --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome-stable --disable-REDACTED-networking --enable-features=NetworkService,NetworkServiceInProcess --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=TranslateUI --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --disable-sync --force-color-profile=srgb --metrics-recording-only (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3929 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-lNi2g7 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,6187394557927837224,7594370874217403009,262144 --enable-features=PdfOopif --disable-features=AcceptCHFrame,IsolateSandboxedIframes,MediaRouter,OptimizationHints,PaintHolding,ProcessPerSiteUpToMainFrameThreshold,RenderDocument,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• safebrowsingohttpgateway.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3543 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-bIYLgv --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,9678276692897935353,14320042909369428898,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=PaintHolding,TranslateUI --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome-stable --disable-REDACTED-networking --enable-features=NetworkService,NetworkServiceInProcess --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=TranslateUI --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --disable-sync --force-color-profile=srgb --metrics-recording-only (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3929 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-lNi2g7 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,6187394557927837224,7594370874217403009,262144 --enable-features=PdfOopif --disable-features=AcceptCHFrame,IsolateSandboxedIframes,MediaRouter,OptimizationHints,PaintHolding,ProcessPerSiteUpToMainFrameThreshold,RenderDocument,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• www.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3543 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-bIYLgv --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,9678276692897935353,14320042909369428898,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=PaintHolding,TranslateUI --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome-stable --disable-REDACTED-networking --enable-features=NetworkService,NetworkServiceInProcess --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=TranslateUI --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --disable-sync --force-color-profile=srgb --metrics-recording-only (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=3929 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-lNi2g7 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,6187394557927837224,7594370874217403009,262144 --enable-features=PdfOopif --disable-features=AcceptCHFrame,IsolateSandboxedIframes,MediaRouter,OptimizationHints,PaintHolding,ProcessPerSiteUpToMainFrameThreshold,RenderDocument,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[caged]

@copilot update the github actions and ci code until the build succeeds and the tests pass.

[Copilot]

@copilot update the github actions and ci code until the build succeeds and the tests pass.

Fixed GitHub Actions CI configuration in commit 0c0706b:

Changes made:

• Replaced puppeteer with playwright for better CI reliability
• Updated test runner config to use playwrightLauncher
• Simplified CI workflow by removing manual system dependency installation
• Added npx playwright install --with-deps chromium step
• Deploy now only runs on main branch pushes

Testing:

• ✅ Build: Successful (vite build)
• ✅ Tests: All 12 tests passing with Playwright Chromium

The CI should now build and test successfully on GitHub Actions.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• esm.ubuntu.com
  • Triggering command: /usr/lib/apt/methods/https /usr/lib/apt/methods/https (dns block)
• googlechromelabs.github.io
  • Triggering command: /usr/local/bin/node node install.mjs (dns block)
• https://storage.googleapis.com/chrome-for-testing-public/143.0.7499.42/linux64/chrome-headless-shell-linux64.zip
  • Triggering command: /usr/local/bin/node node install.mjs (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[caged]

@copilot deploy this branch to github pages.

[Copilot]

@copilot deploy this branch to github pages.

Enabled GitHub Pages deployment from this branch in commit b7f5d77.

The GitHub Actions workflow will now automatically deploy to GitHub Pages when you push to this branch. The workflow will:

1. Build the Vite project
2. Run all tests with Playwright
3. Deploy the build/ folder to the gh-pages branch

The deployment should start automatically with the latest push. You can monitor the progress in the Actions tab of the repository.