export type ElementalConditionOperator = "equals" | "not_equals" | "greater_than" | "less_than" | "greater_than_or_equals" | "less_than_or_equals" | "contains" | "not_contains" | "is_empty" | "is_not_empty";
export interface ElementalCondition {
    property: string;
    operator: ElementalConditionOperator;
    value?: string;
}
export interface ElementalConditionGroup {
    conditions: ElementalCondition[];
    logical_operator: "and" | "or";
}
/**
 * Structured condition format for the Elemental `if` field.
 * An array of condition groups, evaluated with OR logic between groups.
 * Within each group, conditions are joined by the group's `logical_operator`.
 */
export type ElementalConditionExpression = ElementalConditionGroup[];
/** Union type for the `if` field: legacy string expression or structured conditions. */
export type ElementalIfCondition = string | ElementalConditionExpression;
/** Operators that don't require a value (unary checks). */
export declare const UNARY_OPERATORS: ElementalConditionOperator[];
export declare const OPERATOR_LABELS: Record<ElementalConditionOperator, string>;