Function checkSymbolNodeType

static/katex/katex.mjs:6043–6050

* Returns the node more strictly typed iff it is of the given type. Otherwise, * returns null.

(node)

 */

function checkSymbolNodeType(node) {
  if (node && (node.type === "atom" || NON_ATOMS.hasOwnProperty(node.type))) {
    // $FlowFixMe
    return node;
  }

  return null;
}

/**
 * Describes spaces between different classes of atoms.