import { PipeFn } from "../types";
/**
 * Register a custom pipe
 *
 * @param name - Pipe name (used in templates)
 * @param fn - Transform function (first param is value, rest are args)
 *
 * @example
 * Gyos.pipe('multiply', (value, factor = 2) => {
 *   return value * factor;
 * });
 *
 * // In template: {count | multiply(3)}
 */
export declare function pipe(name: string, fn: PipeFn): void;
/**
 * Get a pipe
 */
export declare function getPipe(name: string): Function | undefined;
/**
 * Apply pipe to value
 */
export declare function applyPipe(value: any, pipeName: string, args?: any[]): any;
/**
 * Parse pipe expression: {value | pipe1(arg1, arg2) | pipe2}
 */
export declare function parsePipeExpression(expr: string): {
    base: string;
    pipes: Array<{
        name: string;
        args: string[];
    }>;
};
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