css-tree/lib/lexer/generic-const.js

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

// https://drafts.csswg.org/css-cascade-5/
export const cssWideKeywords = [
    'initial',
    'inherit',
    'unset',
    'revert',
    'revert-layer'
];