NG_DOC_SYNTAX_THEME_NAME
The name of NgDoc's syntax highlighting theme. Set it as shiki.themes.light and shiki.themes.dark in the NgDoc configuration to colour code with the --ng-doc-syntax-* CSS variables of the current theme. The new engine uses it when shiki.themes is not set.
DeclarationTypeScript
const NG_DOC_SYNTAX_THEME_NAME : 'css-variables';