Hi Jeffrey
I recently decided to migrate my coffee scripts to typescript, however, upon first attempt at migrating anything kendo related VS displayed the compilation error you experienced too.
It made me winder if migrating my kendo related coffee scripts to typescript is possible. I presume that the kendo.all.d.ts file must be updated with every kendo.all.js update.
Have you been writing typescripts with kendo references for a long time?
Is this the first time you have this error?
/Morten