Instead of panic, a parsing error should be returned.
Example:
» 9223372036854775808
panic: could not parse "9223372036854775808" as integer
goroutine 1 [running]:
github.com/goby-lang/goby/compiler/parser.(*Parser).parseIntegerLiteral(0xc4201162d0, 0xb30df4, 0xc4201785f0)
Instead of panic, a parsing error should be returned.
Example: