Type aliases
Syntax
TypeAlias :
typeIDENTIFIER=Type
A type alias defines a new name for an existing type. Type aliases are
declared with the keyword type.
For example, the following defines the type BookMsg as a synonym for the type
u8[100], a sequence of 100 u8 numbers which is how sequences of bytes are represented in Fe.
type BookMsg = Array<u8, 100>