Module error 

Structs

EnvError

Describes semantic/environment validation failures (duplicate identifiers, conflicting types, etc.) raised while assembling an Env.

RuntimeError

Execution-time failures that occur while evaluating an expression (missing identifiers, wrong function arity, invalid conversions, etc.).

SyntaxError

Represents parse-time diagnostics raised by the lexer/parser while constructing the CEL AST.

Enums

CompileError

Describes failures that can occur while compiling CEL source into a typed AST.