import { DiagnosticStep, VerifyPluginOptions } from './types';
/**
 * Resolve the ESM entry point for a directory-based plugin.
 * import() doesn't support directory imports, so we resolve via package.json.
 */
export declare function resolveEntryPoint(dirPath: string): string;
/**
 * Runs step-by-step diagnostics to identify exactly which phase of
 * plugin loading fails. This replicates the same resolution logic
 * as `asyncLoadPlugin` but tests each step independently.
 */
export declare function runDiagnostics(options: VerifyPluginOptions): Promise<DiagnosticStep[]>;
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