Eleventy v3.0.1-alpha.1

Try it out in your project

npm install @11ty/eleventy@canary --save-exact

Read more about getting started with Eleventy or why you should use Eleventy.

What's Changed

• Support for Import Attributes #3580 e.g. import data from './data.json' with { type: 'json' };, see 11ty/eleventy-dependency-tree-esm#2
• Adds html-relative Passthrough Copy mode for relative asset references in HTML. Learn more at #3573 (from issue #3552)
• Build performance improvements to v3.0.0 in #3493
• Upgrades to @11ty/eleventy-utils@2.0.0 #3595 (thank you @Zearin!)
• Render templates in parallel. by @fqueze in #3277
  • Adds eleventyConfig.setConcurrency(Number) API to control concurrency (defaults to os.availableParallelism()) #3585
• Bumps liquidjs dependency to 10.19.0 (from 10.17.0)
• Replace UserConfig typedef with a subpath export (#3460) by @noelforte in #3562
• Bump cross-spawn from 7.0.3 to 7.0.6 in the npm_and_yarn group by @dependabot in #3579
• Fix import-related error with CommonJS modules in Node 23 by @vrugtehagel in #3519 #3518
• Removes unreliable character encoding detection in debug output #3584
• Fix for InputPathToUrl plugin to support unencoded paths with spaces #3559 #3583
• IdAttribute plugin has checkDuplicates option (always enabled by default, now allows you to disable) #3560 Docs: https://www.11ty.dev/docs/plugins/id-attribute/#with-options
• Bug fix for returning non-traditional data with eleventyConfig.addCollection API #3467
• Error messaging improvements:
  • Improved error messaging when attempting to link to a permalink: false template (in the HTML <base> plugin) #3503
  • Better errors with Custom template types with non-string permalink values: #3472
  • Improved error messaging with syntax errors in .11ty.js files #3571
  • Improved require(esm) error messaging to reflect proper support in Node v22.12 #3568
  • Error stack improvements by @noelforte in #3572

New Contributors

• @noelforte made their first contribution in #3562

Full Changelog: v3.0.0...v3.0.1-alpha.1