| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| 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. |
| google.golang.org/protobuf/types/known/structpb | Package structpb contains generated types for google/protobuf/struct.proto. |
| reflect | Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |