Function shallow

packages/ast/parse/combinators.js:42–53

(type)

};

const shallow = (type) => (match, _, position) => {
  const [result, content] = match;

  return [
    {
      type,
      value: content,
      source: result,
    },
    position + result.length,
  ];
};

const root = (input, children) => ({
  type: 'root',