/**
 * Import flashcards payload definition.
 */
type ImportFlashcards = {
    /**
     * URL to the flashcard list file (.txt or .xml format, UTF-8 encoded).
     *
     * @example 'https://example.com/flashcards.txt'
     */
    u: string;
    /**
     * The name of your app or website for display in Pleco's return button.
     *
     * @example 'MyApp'
     */
    xSource?: string;
    /**
     * A URL that Pleco should call when the import succeeds.
     *
     * @example 'myapp://success'
     */
    xSuccess?: string;
    /**
     * A URL that Pleco should call when the import fails.
     *
     * @example 'myapp://error'
     */
    xError?: string;
    /**
     * A URL that Pleco should call when the user cancels the import.
     *
     * @example 'myapp://cancel'
     */
    xCancel?: string;
};
/**
 * Import a flashcard list in Pleco using x-callback-url standard.
 *
 * @param payload Import flashcards payload.
 * @returns Pleco import flashcards URL.
 * @example
 * importFlashcards({ u: 'https://example.com/flashcards.txt' })
 * // => 'plecoapi://x-callback-url/fl?u=https%3A%2F%2Fexample.com%2Fflashcards.txt'
 * @example
 * importFlashcards({
 *   u: 'https://example.com/flashcards.xml',
 *   xSource: 'MyApp',
 *   xSuccess: 'myapp://success',
 * })
 * // => 'plecoapi://x-callback-url/fl?u=https%3A%2F%2Fexample.com%2Fflashcards.xml&x-source=MyApp&x-success=myapp%3A%2F%2Fsuccess'
 * @link https://iphone.pleco.com/manual/30200/vershist.html
 */
export declare function importFlashcards(payload: ImportFlashcards): string;
export {};