code: function isStringConcatenation(path) {
    if (!(path.isBinaryExpression() && path.node.operator === "+")) {
      return false;
    }
  
    const left = path.get("left");
    const right = path.get("right");
    return left.isStringLiteral() ||
      right.isStringLiteral() ||
      isStringConcatenation(left) ||
      isStringConcatenation(right);
  }
docs: String concatenations are special cased, so template literals don't require a call to renderArbitrary.