RC0 : Operator cannot be applied to types

Hello, since RC0, only when i want to build, i get some errors like:

Operator ‘==’ cannot be applied to types ‘string’ and ‘number’.
Operator ‘!=’ cannot be applied to types ‘string’ and ‘number’.
Operator ‘>’ cannot be applied to types ‘boolean’ and ‘number’.

if I’m not mistaken this errors are in my templates, but this last error with ‘boolean’ and ‘number’ is when i check for an object length…

So why i can’t use this operators now ?

see a little screenShot here:

Thanks.