Release Pre-release: Eleventy v3.0.0-alpha.19 · 11ty/eleventy

Includes Dev Server v2.0.3: https://github.com/11ty/eleventy-dev-server/releases/tag/v2.0.3
- Add your own headers (e.g. CORS)
- Improvements to DOM Diff algorithm for Declarative Shadow DOM, Custom Elements, inline <script>.
Fix issue with front matter updates on subsequent builds #3397: #3421
Fix TemplateContentUnrenderedTemplateError issue during incremental builds #3410
Fix wildcard in extensions argument in .addPreprocessor() by @vrugtehagel in #3418
Add support for relative paths in InputPath to URL Plugin #3417
Commit lockfile for consistent CI by @uncenter in #3100
fix #3425 import of Liquid.js by @lexoyo in #3426
fix: encodeURI for passthrough aliases by @satgo1546 in #3346
Add flag to run event handlers sequentially by @vrugtehagel in #3423
Add --loader flag to force ESM/CJS mode by @vrugtehagel in #3377
Fixes conflicts with existing id attributes from IdAttributePlugin #3430
Adds filter callback to IdAttributePlugin #3430
Adds eleventyConfig.once method for events 7a96035
Fix type of HtmlTransformer plugins attribute by @aschrab in #3403

Minutiae

Full Changelog: v3.0.0-alpha.18...v3.0.0-alpha.19
Full Eleventy v3 Milestone (170 closed): https://github.com/11ty/eleventy/milestone/40?closed=1