I don't think you can build applications without using the dangerous sinks at all yet. Some common scenarios we know are common:
window.open
href
Setting text on a script element
Setting src of a script element
form.action
innerHTML
Applications do use these sinks quite often, and some of them cannot be just get ridden of (e.g. href or script.src). Even removing eval takes ages. Complex applications parse HTML from the users, load scripts dynamically, and such.
That said - TT allow you to have such enforcement too - just set a "Content-Security-Policy: trusted-types;" header and all dangerous sinks can never be called. We call it Perfect Types, but it's not yet practical to build client side applications in that setting.
window.open href Setting text on a script element Setting src of a script element form.action innerHTML
Applications do use these sinks quite often, and some of them cannot be just get ridden of (e.g. href or script.src). Even removing eval takes ages. Complex applications parse HTML from the users, load scripts dynamically, and such.
That said - TT allow you to have such enforcement too - just set a "Content-Security-Policy: trusted-types;" header and all dangerous sinks can never be called. We call it Perfect Types, but it's not yet practical to build client side applications in that setting.