import { ProjectPluginStructure } from '@teleporthq/teleport-types';
/**
 * Injects a null-rendering client component as a sibling of the app's returned
 * JSX in `pages/_app`. Proven string-surgery (shared by the analytics tracker
 * and the nav active-link highlighter): add the import before the first import,
 * then wrap the returned JSX in a fragment with `<Component />` as a sibling.
 *
 * Idempotent — a second call for the same `componentName` is a no-op. Safe: if
 * `_app` cannot be located or parsed, the structure is left untouched.
 */
export declare function injectSiblingIntoApp(structure: ProjectPluginStructure, params: {
    componentName: string;
    importStatement: string;
}): void;
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