title: $:/changenotes/5.4.0/#9475
description: Split escapecss.js into two platforms
release: 5.4.0
tags: $:/tags/ChangeNote
change-type: performance
change-category: internal
github-links: https://github.com/TiddlyWiki/TiddlyWiki5/pull/9475
github-contributors: Leilei332

Split [[$:/core/modules/utils/escapecss.js]] for two platforms: one for the browser, the other for Node.js. The `CSS.escape` polyfill is moved to `core-server`.