Normative Types

We will use a well-defined set of types for control system data. These will represent either EPICS normative types or a close approximation.

I have made a start in src/ntypes.ts, but more helper functions and types are needed. I am inclined to look at the so-called VTypes that have been developed in Java, since lessons have been learned by using them and they would translate quite easily to TypeScript. It may be a good idea to replicate the VTypes in TypeScript directly.

The VTypes code is in the epicsCoreJava repo on Github.

This link is to a PDF describing the current state of EPICS core Java, including VTypes.

See also https://github.com/dls-controls/cs-web-proto/issues/41.