export interface FileMeta {
    id: string;
    filename: string;
    size: number;
    mimetype: string | null;
    path: string | null;
    /** Displayed pixel size, present only for images that could be measured. */
    width?: number;
    height?: number;
    createdAt: string;
}
export declare function insertFile(meta: {
    id: string;
    filename: string;
    size: number;
    mimetype: string | null;
    path: string | null;
    width?: number;
    height?: number;
}): FileMeta;
export declare function getFile(id: string): FileMeta | undefined;
export declare function listFiles(): FileMeta[];
export declare function deleteFile(id: string): boolean;
/** Update the recorded on-disk path for a file (used when re-homing into the uploads dir). */
export declare function setFilePath(id: string, filePath: string): void;
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