Unintended Indentation in Template Literal with Line Breaks

[knilink]

When update BlockStatement body, template literals within the code are reformatted with unexpected indentations if containing line breaks.

Steps to Reproduce:

import { parse, print } from 'recast';
const ast = parse('{`\n`}');
// simply mutate the body by adding a empty statement
ast.program.body[0].body.push({ loc: null, type: 'EmptyStatement', comments: null });
console.log(print(ast).code);

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

recast@0.23.11

Ref facebook/jscodeshift#664