Error compiling long string litteral (many + on many lines)

[271ch]

Version

2.6.10

Reproduction link

https://codesandbox.io/embed/vue-template-ysl83

Steps to reproduce

Just click the link and you see the error and start editing.
Go to the second of the component and you see a red line (line no 24?)
It says that the string literal is not correct, but its because it loads just a piece of it.

What is expected?

No compilation error

What is actually happening?

A compilation error

[posva]

it seems that the </script> string makes the SFC parser stop earlier than it should.
As a workaround you can escape the slash <\/script>