Parameter Object.Expression

val is_assignable_lhs : (Loc.t, Loc.t) Flow_ast.Expression.t -> bool
val left_hand_side : Parser_env.env -> (Loc.t, Loc.t) Flow_ast.Expression.t
val number : Parser_env.env -> Token.number_type -> string -> float
val bigint : Parser_env.env -> Token.bigint_type -> string -> int64 option