| 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/decls | Package decls contains function and variable declaration structs and helper methods. |
| github.com/google/cel-go/common/types | Package types contains the types, traits, and utilities common to all components of expression handling. |
| math | Package math provides basic constants and mathematical functions. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |