Create a TypeScript type for HTML Strings

[rezbyte]

It would be ideal if we could have a special type for strings that contain HTML code to avoid accidentally passing it to functions that cannot handle it & avoid passing non-HTML strings to functions that expect HTML. For example, the htmlSanitizer or m.trust() if it's possible to override its definition.

[charlag]

We could use some kind of branding for it

[rezbyte]

We could use some kind of branding for it

Would type HTMLString = string not suffice? We still need to find a way to change the parameter type of m.trust() though.

[charlag]

We could use some kind of branding for it

Would type HTMLString = string not suffice? We still need to find a way to change the parameter type of m.trust() though.

no it wouldn't that's just an alias. Like the linked article says, The TypeScript type system is structural.

We usually try to very carefully guard where m.trust is used but inputs to those places could benefit from more strict typing

[rezbyte]

no it wouldn't that's just an alias. Like the linked article says, The TypeScript type system is structural.

I see. It is strange that TypeScript does not offer a way to strongly type built-in.

We usually try to very carefully guard where m.trust is used but inputs to those places could benefit from more strict typing

It would still be safer to guard types at this low level too however.

[rezbyte]

FYI built-in support is coming in TypeScript.

[charlag]

Did they promise it or is it just someone's proposal?

[rezbyte]

It's in their roadmap, so likely yes.