export declare const SOURCE_META_KEY: unique symbol;
export interface LitSourceMeta {
    filePath: string;
    lineNumber: number;
    componentName?: string;
}
/**
 * Attribute the transform stamps on custom elements written in `html`
 * templates: `<wire-file>:<line>:<column>` of the opening `<`.
 */
export declare const CALL_SITE_ATTR = "data-lit-source";
/** Where an instance is written in an `html` template. */
export interface CallSite {
    filePath: string;
    lineNumber: number;
    columnNumber: number;
}
/**
 * The call site the transform stamped on `el`, else the one Astro wrote on
 * it, if any. Parsed from the right: the file part may itself hold colons (a
 * Windows drive).
 */
export declare const readCallSite: (el: Element) => CallSite | undefined;
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