A good example from further down the comment section:

Prettier doesn't break template literals, but it will break non-literal sections of template strings. For example, if we wrote this:

    const foo = `aaaaaaaaaaaaaaa${bbbbbbbbbbbbb}ccccccccccccccc${ddddddddddd}`;

prettier would fix it to

    const foo = 
      `aaaaaaaaaaaaaaa${
        bbbbbbbbbbbbb
       }ccccccccccccccc${
        ddddddddddd
       }`;

Which is not only much harder to read in it's own right, but now takes up 6 lines instead of one!