quarto-preview.js missing in quarto 1.7.33 (conda/win64)

[MoonZ]

I have:

• searched the issue tracker for similar issues
• installed the latest version of Quarto CLI
• formatted my issue following the Bug Reports guide

Bug description

New to Quarto, I'm following the Getting Started guide when noticing the preview doesn't automatically refresh.
Terminal in Jupyterlab shows it can't find quarto-preview.js

(os error 2): readfile 'C:\Users\<username>\.conda\envs\quarto\Library\share\quarto\preview\quarto-preview.js'

I checked and indeed the file is not there. Then I checked the conda package I installed (latest version for win64 in conda-forge):

win-64/quarto-1.7.33-h57928b3_0.conda

In the conda-meta folder C:\Users\<username>\.conda\envs\quarto\conda-meta there is the quarto files manifest : quarto-1.7.33-h57928b3_0.json

[...]
    "Library/share/quarto/pandoc/syntax-definitions/scss.xml",
    "Library/share/quarto/pandoc/templates/default.markdown",
    "Library/share/quarto/preview/jats/quarto-jats-html.xsl",
    "Library/share/quarto/preview/jats/quarto-jats-preview.css",
    "Library/share/quarto/preview/quarto-preview.html",
    "Library/share/quarto/projects/book/book.scss",
    "Library/share/quarto/projects/book/cover.png",
[...]

I can confirm this reflects what has been actually deployed, the quarto-preview.js file is indeed missing from it.

Steps to reproduce

My conda base has been updated. I've used this set of instructions to create the environment:

conda create -n quarto python=3.13
conda activate quarto
conda install conda-forge::quarto
conda install conda-forge::jupyterlab
conda install conda-forge::matplotlib
conda install conda-forge::plotly

and then followed the Get Started guide.

Actual behavior

No response

Expected behavior

No response

Your environment

No response

Quarto check output

Quarto 1.7.33
[>] Checking environment information...
      Quarto cache location: C:\Users\<####>\AppData\Local\quarto
[>] Checking versions of quarto binary dependencies...
      Pandoc version 3.6.3: OK
      NOTE: Dart Sass version 1.59.1 does not strictly match 1.85.1 and strict checking is enabled. Please use 1.85.1.
      Deno version 1.46.3: OK
      Typst version 0.13.0: OK
[>] Checking versions of quarto dependencies......OK
[>] Checking Quarto installation......OK
      Version: 1.7.33
      Path: C:\Users\<####>\.conda\envs\quarto\Library\bin\
      CodePage: 1252

[>] Checking tools....................OK
      TinyTeX: (not installed)
      Chromium: (not installed)

[>] Checking LaTeX....................OK
      Tex:  (not detected)

[>] Checking Chrome Headless....................OK
      Using: Chrome found on system
      Path: C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
      Source: Windows Registry

[>] Checking basic markdown render....OK

[>] Checking Python 3 installation....OK
      Version: 3.13.0 (Conda)
      Path: C:/Users/<####>/.conda/envs/quarto/python.exe
      Jupyter: 5.8.1
      Kernels: python3

[>] Checking Jupyter engine render....OK

[>] Checking R installation...........(None)

      Unable to locate an installed version of R.
      Install R from https://cloud.r-project.org/

[mcanouil]

Unfortunately, the conda recipe is not published or maintained by the Quarto team.

I believe the repository for the community contributed recipe is:

• https://github.com/conda-forge/quarto-feedstock

[mcanouil]

For reference, there was an issue similar in the past on Windows but it was not using conda:

• quarto-preview.js Not Found In Quarto 1.4.554 #9574

CC. @cderv as you were working on the other issue and are on Windows, if you have the time to check.

[cderv]

It is not a conda problem. Somehow the file is indeed missing the windows 1.7.33 build. I see no error in the Release action so it was silently ignore. Our check did not detect this.

❯ unzip -Z quarto-1.7.33-win.zip | grep 'share/preview'
-rw----     2.0 fat      537 b- defN 25-Aug-06 16:30 share/preview/quarto-preview.html
-rw----     2.0 fat   131994 b- defN 25-Aug-06 16:30 share/preview/jats/quarto-jats-html.xsl
-rw----     2.0 fat     5347 b- defN 25-Aug-06 16:30 share/preview/jats/quarto-jats-preview.css

Thanks a lot for the report.

[cderv]

In fact we got an unreported error in build https://github.com/quarto-dev/quarto-cli/actions/runs/16782754853/job/47525585464#step:4:585

dist/quarto-preview.js   443.80 KiB / gzip: 131.95 KiB
[vite-plugin-static-copy:build] Cannot copy 'D:\a\quarto-cli\quarto-cli\src\webui\quarto-preview\dist\quarto-preview.js' to a subdirectory of itself, 'D:\a\quarto-cli\quarto-cli\src\resources\preview\quarto-preview.js'.
[vite-plugin-static-copy] Copy count was not set.
error during build:
Error: Cannot copy 'D:\a\quarto-cli\quarto-cli\src\webui\quarto-preview\dist\quarto-preview.js' to a subdirectory of itself, 'D:\a\quarto-cli\quarto-cli\src\resources\preview\quarto-preview.js'.
    at Object.checkParentPaths (file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/fs-extra@11.3.1/node_modules/fs-extra/lib/util/stat.js:109:11)
    at eventLoopTick (ext:core/01_core.js:175:7)
    at async Object.copy (file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/fs-extra@11.3.1/node_modules/fs-extra/lib/copy/copy.js:29:3)
    at async copyAll (file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/vite-plugin-static-copy@0.13.1/node_modules/vite-plugin-static-copy/dist/index.js:530:7)
    at async Object.writeBundle (file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/vite-plugin-static-copy@0.13.1/node_modules/vite-plugin-static-copy/dist/index.js:942:19)
    at async Promise.all (index 0)
    at async PluginDriver.hookParallel (file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/rollup@2.79.1/node_modules/rollup/dist/es/shared/rollup.js:22676:9)
    at async file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/rollup@2.79.1/node_modules/rollup/dist/es/shared/rollup.js:23804:13
    at async catchUnfinishedHookActions (file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/rollup@2.79.1/node_modules/rollup/dist/es/shared/rollup.js:23126:20)
    at async doBuild (file:///D:/a/quarto-cli/quarto-cli/src/webui/quarto-preview/node_modules/.deno/vite@3.2.6/node_modules/vite/dist/node/chunks/dep-1889fec9.js:45792:22)
Build completed.

It does not prevent release unfortunately. This needs to be fixed.

FWIW 1.8 build correctly has the file

[mcanouil]

@melmatis We appreciate your interest in this issue, but I'd like to share some guidance on how we can make discussions more productive.

Posts restating the same thing as in the original post and confirmed by a maintainer/developer without specific questions or constructive feedback don't help move development forward.
They create notification noise for maintainers without providing actionable input.

The most valuable contributions focus on "here's how I can help solve this" rather than "here's what I want you to do for me."

For the latest information about progress, check the project's changelog, release notes, or issue activity thread.

Thanks for understanding and for your continued interest in the project.