Typesafe types

[dapplion]

Motivation

The package lodestar-types currently uses an exotic initialization strategy to break a circular dependency between root types and their expanded type. There is also repeated information where you must declare a new phase0 type 4 times in different places.

Description

• Break the circular dependency with LazyVariable which allows to initialize the types with a regular function, an easier to follow pattern.
• Use the return type of that function as interface, so you only have to declare each SSZ type once.

Extra:

• Updated the expanded types of altair block and state so they reference altair types
• Removed the consistency test since it will be enforced by typescript itself with an SSZ update: Typesafe library ssz#99
• Moved all params to lodestar-params

[codeclimate]

Code Climate has analyzed commit 535b3ee and detected 4 issues on this pull request.

Here's the issue category breakdown:

Category	Count
Complexity	4

View more on Code Climate.