Function parseCssVar

packages/css-data/src/parse-css-value.ts:525–542

(node: FunctionNode)

};

export const parseCssVar = (node: FunctionNode): undefined | VarValue => {
  const [name, _comma, ...fallback] = node.children;
  const fallbackString = generate({
    type: "Value",
    loc: null,
    children: new List<CssNode>().fromArray(fallback),
  }).trim();
  if (name.type === "Identifier") {
    const value: VarValue = {
      type: "var",
      value: name.name.slice("--".length),
    };
    if (fallback.length > 0) {
      value.fallback = { type: "unparsed", value: fallbackString };
    }
    return value;
  }
};

const parseLiteral = (
  node: undefined | null | CssNode,