==== tests/cases/compiler/arithAssignTyping.ts (12 errors) ====
    class f { }
    
    f += ''; // error
    ~
!!! Invalid left-hand side of assignment expression.
    f += 1; // error
    ~~~~~~
!!! Operator '+=' cannot be applied to types 'typeof f' and 'number'.
    f -= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f *= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f /= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f %= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f &= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f |= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f <<= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f >>= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f >>>= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
    f ^= 1; // error
    ~
!!! The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.