feat(lib): enable minification but keep pure annotations for es output with terser #20522

Copilot · 2025-07-31T17:49:44Z

Instead of disabling terser completely, preserve_annotations: true is now set for lib mode ES output.

fixes #19035

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Co-authored-by: sapphi-red <[email protected]>

packages/vite/src/node/__tests__/plugins/terser.spec.ts

packages/vite/src/node/plugins/terser.ts

playground/lib/__tests__/lib.spec.ts

… config - Remove the ES lib mode condition completely as requested - Update comment and preserveComments logic per feedback - Simplify test to focus on actual terser functionality - Fix terser pattern for pure annotation preservation Co-authored-by: sapphi-red <[email protected]>

Copilot · 2025-08-01T07:31:20Z

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses

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

vite.dev
- Triggering command: /home/REDACTED/.cache/playwright-bin/chromium_headless_shell-1181/chrome-linux/headless_shell --disable-field-trial-config --disable-REDACTED-networking --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --force-color-profile=srgb --metrics-recording-only --no-first-run --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --edge-skip-compat-layer-relaunch --enable-automation --headless --hide-scrollbars --mute-audio --blink-settings=primaryHoverType=2,availableHoverTypes=2,primaryPointerType=4,availablePointerTypes=4 --no-sandbox --no-sandbox --disable-setuid-sandbox --user-data-dir=/tmp/playwright_chromiumdev_profile-FrjdQ4 --remote-debugging-pipe --no-startup-window (dns block)
- Triggering command: /home/REDACTED/.cache/playwright-bin/chromium_headless_shell-1181/chrome-linux/headless_shell --disable-field-trial-config --disable-REDACTED-networking --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --force-color-profile=srgb --metrics-recording-only --no-first-run --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --edge-skip-compat-layer-relaunch --enable-automation --headless --hide-scrollbars --mute-audio --blink-settings=primaryHoverType=2,availableHoverTypes=2,primaryPointerType=4,availablePointerTypes=4 --no-sandbox --no-sandbox --disable-setuid-sandbox --user-data-dir=/tmp/playwright_chromiumdev_profile-MCDZr5 --remote-debugging-pipe --no-startup-window (dns block)
workers.cloudflare.com
- Triggering command: node (vitest 3) (dns block)
- Triggering command: node (vitest 1) (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
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Co-authored-by: sapphi-red <[email protected]>

Copilot · 2025-08-01T08:07:40Z

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses

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

pkg.pr.new
- Triggering command: node /home/REDACTED/setup-pnpm/node_modules/.bin/../pnpm/bin/pnpm.cjs add -D terser (dns block)
vite.dev
- Triggering command: /home/REDACTED/.cache/playwright-bin/chromium_headless_shell-1181/chrome-linux/headless_shell --disable-field-trial-config --disable-REDACTED-networking --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --force-color-profile=srgb --metrics-recording-only --no-first-run --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --edge-skip-compat-layer-relaunch --enable-automation --headless --hide-scrollbars --mute-audio --blink-settings=primaryHoverType=2,availableHoverTypes=2,primaryPointerType=4,availablePointerTypes=4 --no-sandbox --no-sandbox --disable-setuid-sandbox --user-data-dir=/tmp/playwright_chromiumdev_profile-T6KDxO --remote-debugging-pipe --no-startup-window (dns block)
workers.cloudflare.com
- Triggering command: node (vitest 1) (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)

packages/vite/src/node/plugins/terser.ts

playground/lib/__tests__/lib.spec.ts

playground/lib/src/main.js

Co-authored-by: sapphi-red <[email protected]>

Copilot · 2025-08-01T13:33:44Z

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses

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

vite.dev
- Triggering command: /home/REDACTED/.cache/playwright-bin/chromium_headless_shell-1181/chrome-linux/headless_shell --disable-field-trial-config --disable-REDACTED-networking --disable-REDACTED-timer-throttling --disable-REDACTEDing-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-REDACTED-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-REDACTEDing --force-color-profile=srgb --metrics-recording-only --no-first-run --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --edge-skip-compat-layer-relaunch --enable-automation --headless --hide-scrollbars --mute-audio --blink-settings=primaryHoverType=2,availableHoverTypes=2,primaryPointerType=4,availablePointerTypes=4 --no-sandbox --no-sandbox --disable-setuid-sandbox --user-data-dir=/tmp/playwright_chromiumdev_profile-KrJ4Y8 --remote-debugging-pipe --no-startup-window (dns block)
workers.cloudflare.com
- Triggering command: node (vitest 3) (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)

playground/lib/__tests__/lib.spec.ts

playground/lib/src/main.js

sapphi-red · 2025-08-08T02:33:23Z

@copilot update the PR description

…t, and fix main.js structure Co-authored-by: sapphi-red <[email protected]>

Copilot · 2025-08-08T02:40:55Z

@copilot update the PR description

Updated the PR description to reflect all changes and provide clear documentation of the feature and implementation in commit 59bdf7d.

…tion test, and fix main.js structure" This reverts commit 59bdf7d.

playground/lib/vite.terser.config.js

packages/vite/src/node/plugins/terser.ts

Initial plan

4fdc0f5

Copilot AI assigned Copilot and sapphi-red Jul 31, 2025

Copilot started work on behalf of sapphi-red July 31, 2025 17:49 View session

Copilot AI and others added 2 commits July 31, 2025 17:57

Initial exploration and test setup for lib mode terser minification

eef351e

Co-authored-by: sapphi-red <[email protected]>

feat: enable minify for lib mode es output + build.minify: 'terser'

05b379d

Copilot AI changed the title ~~[WIP] Implement @vitejs/vite/issues/19035~~ feat: enable minify for lib mode es output + build.minify: 'terser' Jul 31, 2025

Copilot AI requested a review from sapphi-red July 31, 2025 18:20

Copilot finished work on behalf of sapphi-red July 31, 2025 18:20

sapphi-red requested changes Aug 1, 2025

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Copilot started work on behalf of sapphi-red August 1, 2025 07:42 View session

feat: add pure annotation test and function call in lib mode

2b0d3b3

Co-authored-by: sapphi-red <[email protected]>

Copilot finished work on behalf of sapphi-red August 1, 2025 08:07

sapphi-red reviewed Aug 1, 2025

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Copilot started work on behalf of sapphi-red August 1, 2025 13:23 View session

Address PR review feedback: update regex pattern and simplify tests

82eb360

Co-authored-by: sapphi-red <[email protected]>

Copilot AI requested a review from sapphi-red August 1, 2025 13:33

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Copilot started work on behalf of sapphi-red August 1, 2025 13:39 View session

sapphi-red added p2-nice-to-have Not breaking anything but nice to have (priority) feat: library mode labels Aug 1, 2025

sapphi-red changed the title ~~feat: enable minify for lib mode es output + build.minify: 'terser'~~ feat(lib): enable minify for lib mode es output + build.minify: 'terser' Aug 1, 2025

Copilot AI requested a review from sapphi-red August 7, 2025 11:41

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update

c2987ff

sapphi-red changed the title ~~feat(lib): enable terser minification for ES lib mode with debugger removal support~~ feat(lib): enable comment removal other than pure annotations for es output Aug 7, 2025

sapphi-red added 3 commits August 8, 2025 11:27

update

c76da0f

update

6b43682

update

811918c

Copilot started work on behalf of sapphi-red August 8, 2025 02:33 View session

sapphi-red and others added 2 commits August 8, 2025 11:37

update

55a32a8

Address PR feedback: remove debugger test, update pure annotation tes…

59bdf7d

…t, and fix main.js structure Co-authored-by: sapphi-red <[email protected]>

Copilot AI requested a review from sapphi-red August 8, 2025 02:41

Copilot finished work on behalf of sapphi-red August 8, 2025 02:41

Revert "Address PR feedback: remove debugger test, update pure annota…

43074bb

…tion test, and fix main.js structure" This reverts commit 59bdf7d.

sapphi-red changed the title ~~feat(lib): enable comment removal other than pure annotations for es output~~ feat(lib): enable minification but keep pure annotations for es output with terser Aug 8, 2025

sapphi-red approved these changes Aug 8, 2025

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sapphi-red marked this pull request as ready for review August 8, 2025 02:44

sapphi-red reviewed Aug 12, 2025

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sapphi-red and others added 2 commits August 12, 2025 10:11

chore: update

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chore: update

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bluwy reviewed Aug 20, 2025

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sapphi-red added 3 commits August 20, 2025 14:53

test: add test for iife terser

dbcbc41

fix: respect preserve_annotations for non-es output

51ad184

chore: merge main

223dff8

bluwy approved these changes Aug 20, 2025

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sapphi-red added this to the 7.2 milestone Aug 20, 2025

sapphi-red merged commit df997d0 into main Oct 22, 2025
19 checks passed

sapphi-red deleted the copilot/fix-6b58c28a-21c9-4376-aa7a-1978340e82f0 branch October 22, 2025 08:02

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feat(lib): enable minification but keep pure annotations for es output with terser #20522

feat(lib): enable minification but keep pure annotations for es output with terser #20522

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Copilot AI commented Jul 31, 2025 • edited by sapphi-red Loading Uh oh! There was an error while loading. Please reload this page.

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Copilot AI commented Aug 1, 2025

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

Uh oh!

Copilot AI commented Aug 1, 2025

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

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Uh oh!

Uh oh!

Uh oh!

Uh oh!

Copilot AI commented Aug 1, 2025

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

Uh oh!

Uh oh!

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sapphi-red commented Aug 8, 2025

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Copilot AI commented Aug 8, 2025

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Copilot AI commented Jul 31, 2025 •

edited by sapphi-red

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