Cannot read properties of undefined (reading 'push') on clean-css/lib/tokenizer/tokenize.js:434:17

[Sherry-Lee]

Issue Description

When using the version 5.3.1 of clean-css combined with version > 11.1.34 of @ @sap-theming/theming-base-content.

Environment

• clean-css version - npm ls clean-css: 5.3.1
• @sap-theming/theming-base-content version: 11.1.40
• node.js version - node -v: v16.14.1
• operating system: MacOS Monterey version 12.4

Error

[exec] -- PLUGIN_ERROR-angular --
[exec] TypeError: Cannot read properties of undefined (reading 'push')
[exec] at intoTokens (/node_modules/clean-css/lib/tokenizer/tokenize.js:311:17)

[jakubpawlowicz]

Hey @Sherry-Lee - any chance to share a piece of CSS that causes it?

[droshev]

@Sherry-Lee you are running it against files from theming-base-content. You should just import them instead.

[khaxan]

I was facing the same issue but it turns out I had HTML in my CSS.