Function parseLiteral

packages/css-data/src/parse-css-value.ts:544–711

(
  node: undefined | null | CssNode,
  keywords?: readonly string[]
)

};

const parseLiteral = (
  node: undefined | null | CssNode,
  keywords?: readonly string[]
):
  | undefined
  | UnitValue
  | KeywordValue
  | ImageValue
  | RgbValue
  | ColorValue
  | VarValue
  | FunctionValue => {
  if (node?.type === "Number") {
    return {
      type: "unit",
      unit: "number",
      value: Number(node.value),
    };
  }
  if (node?.type === "Dimension" && availableUnits.has(node.unit)) {
    return {
      type: "unit",
      unit: node.unit as Unit,
      value: Number(node.value),
    };
  }
  if (node?.type === "Percentage") {
    return {
      type: "unit",
      unit: "%",
      value: Number(node.value),
    };
  }
  if (node?.type === "Identifier") {
    const name = node.name.toLowerCase();
    if (
      keywords?.map((keyword) => keyword.toLowerCase()).includes(name) ||
      parseColor(name)
    ) {
      return {
        type: "keyword",
        value: name,
      };
    }
  }
  if (node?.type === "Url") {
    return {
      type: "image",
      value: {
        type: "url",
        url: node.value,
      },
    };
  }
  if (node?.type === "Hash") {
    const hexString = `#${node.value}`;
    const color = parseColor(hexString);
    if (color) {