Hexo v6 is requires Node.js 12.13+. Please use Node.js 12+.
To upgrade to Hexo v6, change the following line in your package.json,
- "hexo": "^5.4.1",  | 
Breaking Changes
- Drop Node 10 @stevenjoezhang #4779 #4691
 
Security
Please see more detail: Announcement: About CVE-2021-25987
New features
- feat: load hexo plugin in the theme’s package.json @stevenjoezhang #4771
 - feat(open_graph): different URLs for 
og:imageandtwitter:image@KentarouTakeda #4748 
Performance
- perf(tag/helper): memoize @SukkaW #4789
 - perf(external_link): optimize regex @SukkaW #4790
 - refactor/perf: use nanocolors @SukkaW #4788
 - Switch to picocolors @tomap #4825
 - perf: avoid using delete operator @SukkaW #4711
 - perf: overall improvements @SukkaW #4783
 - refactor/perf(post): use state machine to escape swig tag @SukkaW #4780
 - refactor: refactor pagination - paginatorHelper - pagenasionPartShow @CroMarmot #4662
 
Fixes
- fix(post): escape swig full tag with args @stevenjoezhang #4824
 - fix(processor): remove race condition failsafe @SukkaW #4791
 - fix(#4780): curly brackets @SukkaW #4784
 - fix(#4780): empty tag name correction @SukkaW #4786
 - Generate draft assets in draft mode @darekkay #4563
 
Refactor
Docs
- doc: add homebrew install @chenrui333 #4724
 - doc(extend/console): add jsdoc @SukkaW #4500
 
Dependencies
- Cleanup dependabot @tomap #4820
 - chore: bump actions/stale from 3 to 4 @dependabot #4828
 - chore: bump sinon from 11.1.2 to 12.0.1 @dependabot #4810
 - chore: bump eslint from 7.32.0 to 8.0.0 @dependabot #4799
 - chore: bump hexo-log from 2.0.0 to 3.0.0 @dependabot #4794
 - chore: bump husky from 4.3.8 to 7.0.2 @dependabot #4763
 - chore: bump sinon from 10.0.1 to 11.1.2 @dependabot #4747
 - chore: bump mocha from 8.4.0 to 9.1.1 @dependabot #4765
 - chore: bump lint-staged from 10.5.4 to 11.0.0 @dependabot #4697
 - Upgrade to GitHub-native Dependabot @dependabot-preview #4689
 - chore(deps-dev): bump sinon from 9.2.4 to 10.0.0 @dependabot-preview #4670
 - chore(deps-dev): bump hexo-renderer-marked from 3.3.0 to 4.0.0 @dependabot-preview #4649
 
New Contributors
- @CroMarmot made their first contribution in https://github.com/hexojs/hexo/pull/4662
 - @darekkay made their first contribution in https://github.com/hexojs/hexo/pull/4563
 - @chenrui333 made their first contribution in https://github.com/hexojs/hexo/pull/4724
 
Full Changelog: https://github.com/hexojs/hexo/compare/5.4.0...6.0.0