Consider switching back to Puppeteer from Playwright

[MurakamiShinyu]

We switched from Puppeteer to Playwright in Vivliostyle CLI v5.0.0 (2022-06-06) because at that time Playwright had several advantages over Puppeteer.

See the pull request switching to Playwright:

• feat: Switch Puppeteer into Playwright #291

Changed the headless browser library into Playwright. As a result of this, we can fix some of the significant issues of the current CLI.

• Hung of launching headless browser (especially in CI)
• Old Chromium on arm64 linux

And some features can be added!

• Firefox & Webkit support (preview command only for now due to restriction of Playwright)
• Global caching of the browser files

However, now most of the issues with Puppeteer have been resolved, and it has some advantages over Playwright, especially:

• Hypenation support on non-macOS platforms

  • see Hyphenation doesn't work on local installation #551

• Firefox support for PDF generation

The only limitation of Puppeteer, as far as I know, is that it does not support WebKit, but I don't think it is very important for Vivliostyle CLI only for previewing.

[spring-raining]

There seems to be a rationale for switching to Puppeteer, but I would like to do some more research to decide implementation policy.
Whether we choose Puppeteer or Playwright, it would be even better to have a feature that would allow us to specify the browser version to install, as we may have problems in the future that depend on a particular browser build.

[MurakamiShinyu]

Related Playwright issues:

• [Feature]: Add support for hyphens: auto; microsoft/playwright#34375
• [Feature]: PDF generation with Firefox microsoft/playwright#34406

[MurakamiShinyu]

About support for hyphens: auto, they seem to be adding it in Playwright v1.51.

About PDF generation with Firefox, I got an answer from Playwright team: (microsoft/playwright#34406 (comment))

No plans of this kind. Generating pdf is not about testing and I am not sure why more than one generator is required.

and the issue was closed as no plans.

[anghenfil]

Seems like they won't add hyphens: auto support before Playwright v1.52: microsoft/playwright#34375