import type { Plugin } from 'vite';
import MagicString from 'magic-string';
import type { OptionsContext } from './context.js';
/**
 * Rewrites native `#private` class members into computed keys backed by
 * `Symbol.for(...)`. The key is stable across re-evaluations of the module,
 * so instances built by an earlier evaluation of a class and methods copied
 * from a later one agree on where private state lives. That is what lets HMR
 * patch a class in place. Private members esbuild already lowered get the
 * same treatment through their slots. Returns `null` when there is nothing to
 * rewrite or the module can't be handled safely.
 */
export declare const rewritePrivateNames: (code: string, id: string) => {
    code: string;
    map: ReturnType<MagicString['generateMap']>;
} | null;
/**
 * Dev-only transform that swaps native `#private` class members for stable
 * symbol keys so HMR's in-place class patching keeps working. See
 * {@link rewritePrivateNames}. Gates itself on the context's options, which
 * are only resolved against the loaded env after the plugin array is built.
 */
export declare const litPrivateFields: (ctx: OptionsContext) => Plugin;
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