| encoding/hex | Package hex implements hexadecimal encoding and decoding. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/open-policy-agent/opa/internal/wasm/instruction | Package instruction defines WASM instruction types. |
| github.com/open-policy-agent/opa/internal/wasm/types | Package types defines the WASM value type constants. |
| io | Package io provides basic interfaces to I/O primitives. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |