Upgrade to Terser 5 + html-minifier-terser 6

[slorber]

Is your feature request related to a problem? Please describe.

Docusaurus users using mono repo had problems due to conflict between Terser 4 / Terser 5

html-minifier-terser v6 has been released recently with Terser 5 support (API is now async), so this lib could also try to upgrade, ensuring we are now all using Terser 5, having less problems in monorepos, reduce install size/time

Describe the solution you'd like

Upgrade libs, keep same behavior.

Make minifyHtml async (The caller sites are already async)

html-webpack-plugin/index.js

Line 1044 in 0a6568d

function minifyHtml (html) {

Describe alternatives you've considered

NA

Additional context

• Allow async functions for minifyCSS and minifyJS terser/html-minifier-terser#49
• Minify failure when building docusaurus site in a yarn workspaces with another project facebook/docusaurus#3515
• chore: upgrade Terser-related dependencies facebook/docusaurus#5609

[jantimon]

hey 👋

thanks for reaching out - if it's only about sync vs async we should just add this.. do you have time to create a pr?

are there any other breaking changes? e.g. dropping nodejs support or anything which might cause issues for html-webpack-plugin users?

[gabrielcsapo]

I can pick this up throwing a PR up now.