The issue here is that the stripTrailingHardline does not work for js/ts, I fixed it and then I realized that we always print trailing newline in every language, so there's no need to strip newline for text in script-like tag.

Prettier pr-5111
Playground link

--parser parse5

Input:

<style>
  .foo {}
</style>

Output:

<style>
.foo {
}
</style>

• I’ve added tests to confirm my change works.
• (If changing the API or CLI) I’ve documented the changes I’ve made (in the docs/ directory)
• I’ve read the contributing guidelines.