import type { ChannelType } from "@/store";
export interface UseVariablesResult {
    /**
     * All available variables from the editor configuration
     */
    availableVariables: string[];
    /**
     * Variables that are actually used in the channel's content
     */
    usedVariables: string[];
    /**
     * Current variable values (for preview/testing)
     */
    variableValues: Record<string, string>;
    /**
     * Update a variable's value
     */
    addVariableValue: (key: string, value: string) => void;
    /**
     * Update multiple variable values in a single state update
     */
    addVariableValues: (entries: Record<string, string>) => void;
    /**
     * Clear all variable values (reset to empty object)
     */
    clearAllVariableValues: () => void;
}
/**
 * Hook to access and manage variables for a specific channel.
 *
 * @param channelType - The channel to get variables for (e.g., 'email', 'sms', 'slack').
 *   Pass `"all"` to merge used variables across every channel element in the template.
 *   Omit to default to the currently active channel.
 * @returns Object containing available variables, used variables, current values, and update function
 *
 * @example
 * ```tsx
 * const { usedVariables } = useVariables('all');
 * // usedVariables merges variables from email, sms, push, etc.
 *
 * const { availableVariables, usedVariables, addVariableValue } = useVariables('email');
 * addVariableValue('user.name', 'John Doe');
 * ```
 */
export declare const useVariables: (channelType?: ChannelType | "all") => UseVariablesResult;