feat(syndesi): introduce client for hypermedia-like JSON/HTTP

[dherges]

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[dherges]

This is a weak link in the Call api. From <R>send(), you always get a Call<R> with a Resource<R>. What about Call<R, D> to get a R extends Resource<D>?

I think we need:

• call() w/o generics to get an any-typed Resource<any>
• <R>call() w/ generic type to get an R extends Resource<?>

Thus, the Call<R extends Resource<?>> call class would work with Resource....

[dherges]

export class Call2<R> {

  constructor(
    public resource: R & ResourceMetadata
  ) {}

  // PROBLEM: only one of the method declaration overrides seems to work...
  //public next(): Call2<ResourceMetadata>;
  public next<NextResource>(): Call2<NextResource> {
    return new Call2(this.resource);
  }

}

interface FooRes extends Resource {
  bar: string;  
}

const resource1: Resource = {};
const call2 = new Call2({}); // <-- good, compile error

call2.resource._links; // <-- good, type ResourceMetadata found

const next1 = call2.next();
const next2 = call2.next<FooRes>();

next1.resource._links.self; // <-- bad, type ResourceMetadata not recognized
next2.resource._links.self; // <-- good
next2.resource.bar; // <-- good

[dherges]

In typescript playground, it's supposed to work in TypeScript 3.3

[dherges]

👍

[dherges]

👍