/**
 * ID of an SVG element that contains all symbols
 */
export declare const SVG_ID = "svg-symbols";
/**
 * Prepended to the symbol ID
 */
export declare const SYMBOL_ID_PREFIX = "svg-";
/**
 * Attribute of a symbol element that contains count of elements that uses that symbol
 */
export declare const USAGES_COUNT_ATTR = "data-count";
/**
 * Should be called whenever image source is updated, and component is mounted.
 *
 * @param prevSrc Previous symbol source code, i.e. value of `import "./my/image.svg"`. If there's no previous source, pass `undefined`.
 * @param src Symbol source code, i.e. value of `import "./my/image.svg"`
 * @returns Attributes that should be bound to the `<svg>` tag. These attributes should override attributes bound by the user.
 */
export declare function onSrcUpdate(prevSrc: string | undefined, src: string): {
    id?: undefined;
    attrs?: undefined;
} | {
    id: string;
    attrs: {
        viewBox: string;
        width: string;
        height: string;
    };
} | {
    id: string;
    attrs?: undefined;
};
/**
 * Should be called whenever component is unmounted
 * @param symbolOrId Symbol or ID of a symbol. If nullish value is provided, won't do anything.
 */
export declare function onUnmount(symbolOrId: SVGSymbolElement | string | null | undefined): void;