Unintended Indentation in Template Literal with Line Breaks

[knilink]

When update BlockStatement body, template literals within the code are reformatted with unexpeted indentations.

Steps to Reproduce:

Transformer Code (transform.js):

module.exports = function (fileInfo, api, options) {
  const j = api.jscodeshift;
  const root = j(fileInfo.source);
  root.find(j.BlockStatement).forEach((path) => {
    path.node.body = [
      ...path.node.body,
      // simply mutate the body by adding a empty statement
      j.emptyStatement(),
    ];
  });
  return root.toSource();
};

Source File (test.js):

Create a test file by

echo -e "{\`\n\`}" > test.js

then the content should be

{`
`}

Run the transformer

npx jscodeshift -t transform.js test.js

Expected Result:

if it's supposed to format the code then it should be

{
  `
` 
}

Actual Result:

{
  `
  ` 
}

where the indentation is unexpectedly added after the line break in template literal

Version

jscodeshift@17.3.0

[ElonVolo]

This is something that would be handled at the recast library level, as opposed to the jscodeshift level.

I'd recommend filing an issue with recast and making a reference to the issue you've filed with jscodeshift.

https://github.com/benjamn/recast

[knilink]

benjamn/recast#1419