import type MagicString from 'magic-string';
/**
 * The `Symbol.for` key shared between transform output and runtime resolution;
 * the runtime's `SOURCE_META_KEY` is the symbol itself.
 */
export declare const SOURCE_META_SYMBOL_KEY = "@oddsquad/vite-plugin-lit#source";
/**
 * The expression string used in generated code to reference the shared
 * symbol at runtime.
 */
export declare const SOURCE_META_SYM = "Symbol.for('@oddsquad/vite-plugin-lit#source')";
/** 1-based line number for an index in source text. */
export declare const lineNumberAt: (code: string, index: number) => number;
/**
 * Injects component source metadata onto custom element class constructors.
 * Returns whether any injection was made.
 */
export declare const injectSourceMeta: (code: string, filePath: string, ms: MagicString) => boolean;
//# sourceMappingURL=source-meta.d.ts.map