Fragment generator

index.js

function pad(lvl) {
  return ' '.repeat(2 * lvl);
}

function buildGraphStructure(data, lvl = 0) {
  return Object.keys(data).reduce((acc, key) => {
    if (data[key]) {
      return (
        acc +
        `${pad(lvl)}${key} {\n` +
        `${buildGraphStructure(data[key], lvl + 1)}` +
        `${pad(lvl)}}` +
        '\n'
      );
    }

    return acc + `${pad(lvl)}${key}\n`;
  }, '');
}

function buildGqlFragment(fragmentName, onType, pathsToUpdate) {
  const dataStructure = pathsToUpdate.reduce(
    (acc, path) => assocPath(path, null, acc),
    {}
  );

  return gql`
    fragment ${fragmentName} on ${onType} {
      ${buildGraphStructure(dataStructure)}
    }
  `;
}