pub const TAG_STRING: i64 = -7;
pub const TAG_FUNCTION_BYTECODE: i64 = -2;
pub const TAG_OBJECT: i64 = -1;
pub const TAG_INT: i64 = 0;
pub const TAG_BOOL: i64 = 1;
pub const TAG_NULL: i64 = 2;
pub const TAG_UNDEFINED: i64 = 3;
pub const TAG_EXCEPTION: i64 = 6;
pub const TAG_FLOAT64: i64 = 7;