The chars a TextNode inside a BlockStatement is a lie.

[ghost]

Example:

{{#foo}}

{{/foo}}

Will report a TextNode inside the BlockStatement with chars: '\n' while this should be chars: '\n\n'.
I would also accept the start location of the TextNode to be on the new line.

[rwjblue]

It is actually "correct". A block statement or mustache statement will "eat" a newline if it follows directly after the mustaches.

[mmun]

This is a default feature of the Handlebars parser. We can disable it but it is a breaking change. See
handlebars-lang/handlebars.js#1072 and handlebars-lang/handlebars.js@ea3a5a1.