/// Errors from query operations.
#[derive(Debug, thiserror::Error)]
pub enum QueryError {
    #[error("Invalid query operator: {0}")]
    InvalidOperator(String),

    #[error("Type mismatch: {0}")]
    TypeMismatch(String),

    #[error("Invalid update: {0}")]
    InvalidUpdate(String),

    #[error("Aggregation error: {0}")]
    AggregationError(String),

    #[error("Invalid regex: {0}")]
    InvalidRegex(String),
}