import type { MetaobjectsGenConfig } from "@metaobjectsdev/codegen-ts";
import type { MetaData } from "@metaobjectsdev/metadata";
export interface CodegenDriftResult {
    /** True when the committed output matches a fresh regen exactly. */
    clean: boolean;
    /** Project-relative paths that differ (changed / missing / extra), sorted. */
    driftedFiles: string[];
    /** Human-readable, one-line-per-file drift summary. */
    lines: string[];
    /** Set when the gate could not run (e.g. no outDir to compare against). */
    error?: string;
}
/**
 * Run codegen into a temp tree and diff it against the committed output.
 *
 * @param config   the loaded metaobjects config (provides outDir/targets).
 * @param metadata the loaded MetaRoot (same object `meta gen` would use).
 * @param projectRoot absolute project root (committed outDirs are keyed off it).
 */
export declare function computeCodegenDrift(config: MetaobjectsGenConfig, metadata: MetaData, projectRoot: string): Promise<CodegenDriftResult>;
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