import type { DataReIm } from '../types/index.ts';
export interface ReimArrayFFTOptions {
    inverse?: boolean;
    applyZeroShift?: boolean;
    /**
     * Write the result back into the input arrays instead of allocating new ones.
     * @default false
     */
    inPlace?: boolean;
}
/**
 * Apply FFT to an array of complex spectra, reusing a single FFT instance for
 * all elements to avoid repeated instantiation overhead.
 * All elements must have the same length.
 * @param data - array of complex spectra
 * @param options - options
 * @returns array of transformed complex spectra
 */
export declare function reimArrayFFT(data: DataReIm[], options?: ReimArrayFFTOptions): Array<DataReIm<Float64Array>>;
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