Replace preconstruct with turborepo + tsdown

[Copilot]

Migrates build system from preconstruct to turborepo + tsdown following the pattern in https://github.com/gsimone/tailwind-styles-embed.

Changes

• Build tooling: Replaced @preconstruct/cli with [email protected] and [email protected]
• Turbo configuration: Added turbo.json with build task orchestration and dependency management
• Package builds: Created tsdown.config.ts for each package
  • Main leva package: 3 entrypoints (index, plugin, headless)
  • Plugin packages: single entrypoint each
• Package exports: Modernized to conditional exports format

  "exports": {
    ".": {
      "import": { "types": "./dist/index.d.mts", "default": "./dist/index.mjs" },
      "require": { "types": "./dist/index.d.cts", "default": "./dist/index.cjs" }
    }
  }
  

• Output structure: Changed from dist/package-name.cjs.js to standard dist/index.{cjs,mjs}
• Scripts: Updated root scripts to use turbo commands (turbo build, turbo dev)
• Gitignore: Added .turbo/ directory exclusion
• Size-limit: Updated paths to match new output structure

Build cache reduces subsequent builds from 1m23s to 95ms.

[!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: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4660 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,4227582814157948300,10961407872111386871,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome --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-features=Translate,BackForwardCache --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 --no-first-run --enable-automation --password-store=basic --use-mock-keychain --enable-blink-features=IdleDetection --export-tagged-pdf --headless --hide-scrollbars --mute-audio --no-sandbox --disable-setuid-sandbox --disable-dev-shm-usage --remote-debugging-port=0 --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --noerrdialogs --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl about:blank (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4779 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-Kf58dc --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5229822286931856457,16316663070279571543,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• clients2.google.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4660 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,4227582814157948300,10961407872111386871,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome --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-features=Translate,BackForwardCache --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 --no-first-run --enable-automation --password-store=basic --use-mock-keychain --enable-blink-features=IdleDetection --export-tagged-pdf --headless --hide-scrollbars --mute-audio --no-sandbox --disable-setuid-sandbox --disable-dev-shm-usage --remote-debugging-port=0 --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --noerrdialogs --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl about:blank (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4779 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-Kf58dc --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5229822286931856457,16316663070279571543,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• safebrowsingohttpgateway.googleapis.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4660 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,4227582814157948300,10961407872111386871,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome --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-features=Translate,BackForwardCache --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 --no-first-run --enable-automation --password-store=basic --use-mock-keychain --enable-blink-features=IdleDetection --export-tagged-pdf --headless --hide-scrollbars --mute-audio --no-sandbox --disable-setuid-sandbox --disable-dev-shm-usage --remote-debugging-port=0 --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --noerrdialogs --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl about:blank (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4779 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-Kf58dc --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5229822286931856457,16316663070279571543,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• www.google.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4660 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,4227582814157948300,10961407872111386871,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,Translate --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome --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-features=Translate,BackForwardCache --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 --no-first-run --enable-automation --password-store=basic --use-mock-keychain --enable-blink-features=IdleDetection --export-tagged-pdf --headless --hide-scrollbars --mute-audio --no-sandbox --disable-setuid-sandbox --disable-dev-shm-usage --remote-debugging-port=0 --user-data-dir=/tmp/puppeteer_dev_chrome_profile-scPige --noerrdialogs --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl about:blank (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --mute-audio --crashpad-handler-pid=4779 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/puppeteer_dev_chrome_profile-Kf58dc --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5229822286931856457,16316663070279571543,262144 --enable-features=NetworkService,NetworkServiceInProcess --disable-features=BackForwardCache,PaintHolding,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)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Replace preconstruct with turborepo+tsdown</issue_title> <issue_description>Use turborepo and TSDown. Make sure tsdown ignores .turbo files. Take this as an example: https://github.com/gsimone/tailwind-styles-embed </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes pmndrs/leva#576

---

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[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 4de9f745d0489f8d7000df117fb6bf291c958b00

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Project	Deployment	Preview	Comments	Updated (UTC)
leva	Ready	Preview	Comment	Nov 9, 2025 0:03am

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[codesandbox-ci[bot]]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 6baf43ad9cbe76150441c8997508f2842e709ff1:

Sandbox	Source
leva-minimal	Configuration
leva-busy	Configuration
leva-scroll	Configuration
leva-advanced-panels	Configuration
leva-ui	Configuration
leva-theme	Configuration
leva-transient	Configuration
leva-plugin-plot	Configuration
leva-plugin-bezier	Configuration
leva-plugin-spring	Configuration
leva-plugin-dates	Configuration
leva-custom-plugin	Configuration

[gsimone]

@copilot .turbo should be git ignored

[Copilot]

@copilot .turbo should be git ignored

It is! Added in commit 6e852f7. The .turbo/ directory is on line 20 of .gitignore.