import { Ref, ShallowRef } from 'vue';
export interface DelimitedTable {
    columns: string[];
    rows: Record<string, string>[];
    rawRows: string[][];
    delimiter: string;
}
export interface ParseDelimitedTextOptions {
    delimiter?: string;
    headers?: readonly string[];
    hasHeaderRow?: boolean;
    trim?: boolean;
}
export interface FileImportValidationOptions {
    accept?: string | readonly string[];
    maxSizeBytes?: number;
}
export interface FileImportOptions<TResult = string> extends FileImportValidationOptions {
    encoding?: string;
    parse?: (text: string, file: File) => TResult | Promise<TResult>;
}
export interface UseFileImportReturn<TResult> {
    loading: ShallowRef<boolean>;
    error: Ref<string | null>;
    fileName: Ref<string>;
    result: Ref<TResult | null>;
    importFile: (file: File) => Promise<TResult>;
    clear: () => void;
}
/** Stateful file reader for plugin import flows with shared validation and error handling. */
export declare function useFileImport<TResult = string>(options?: FileImportOptions<TResult>): UseFileImportReturn<TResult>;
export declare function validateImportFile(file: File, options?: FileImportValidationOptions): void;
export declare function readFileAsText(file: File, encoding?: string): Promise<string>;
export declare function parseDelimitedText(text: string, options?: ParseDelimitedTextOptions): DelimitedTable;
export declare function detectDelimiter(text: string): string;