Babel 如何在代码中添加新行或换行符？

Question

I haven't found a way to add an empty line to my code with Babel. I have javascript code that is parsed with the Babel library. I have for example the following code:

var e = t && t.__esModule ? function () {
  return t.default;
} : function () {
  return t;
};

and I need to convert this into:

var e = t && t.__esModule ? function () {
  return t.default;
} : 
function () {
  return t;
};

I have tried to insert code before the function with

path.insertAfter(t.expressionStatement(t.stringLiteral('\n')))

but the Babel generator turns the code into:

var e = t && t.__esModule ? function () {
  return t.default;
} : ("\n", function () {
  return t;
});

I need to add line breaks at multiple places in the code for example also after a function opens with '{' or after '},'. How can I do this with Babel? Is there a different approach possible? Is there a Babel alternative?

Answer 1

I wanted to do something which is impossible with an AST as @loganfsmyth pointed out. An AST removes intentionally information such as line breaks and whitespaces. What I was looking for was a Concrete Syntax Tree (CST) or a Linter. ESLint allowed me to add line breaks where required.