| encoding/base64 | Package base64 implements base64 encoding as specified by RFC 4648. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/google/cel-go/cel | Package cel defines the top-level interface for the Common Expression Language (CEL). |
| github.com/google/cel-go/checker/decls | Package decls provides helpers for creating variable and function declarations. |
| github.com/google/cel-go/common/types | Package types contains the types, traits, and utilities common to all components of expression handling. |
| github.com/google/cel-go/common/types/ref | Package ref contains the reference interfaces used throughout the types components. |
| github.com/google/cel-go/common/types/traits | Package traits defines interfaces that a type may implement to participate in operator overloads and function dispatch. |
| github.com/google/cel-go/interpreter/functions | Package functions defines the standard builtin functions supported by the interpreter and as declared within the checker#StandardDeclarations. |
| google.golang.org/genproto/googleapis/api/expr/v1alpha1 | |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| unicode | Package unicode provides data and functions to test some properties of Unicode code points. |