import type { Operation } from '@apollo/client/core';
/**
 * Checks whether an operation includes all its non-nullable variables
 *
 * ```haskell
 * hasAllVariables :: Operation -> Bool
 * ```
 *
 * @param operation The GraphQL operation to validate.
 * @return Whether the operation has all it's required variables.
 */
export declare function hasAllVariables(operation: Partial<Operation>): boolean;