Type Alias AssignmentOperator

AssignmentOperator:
    | "="
    | "+="
    | "-="
    | "*="
    | "/="
    | "%="
    | "**="
    | "<<="
    | ">>="
    | ">>>="
    | "|="
    | "^="
    | "&="
    | "||="
    | "&&="
    | "??="