import type { GraphLanguageAdapter } from './types.js';
export interface GraphAdapterDescriptor {
    readonly id: string;
    readonly fileExtensions: readonly string[];
    readonly displayName?: string;
}
/** Validate metadata before it reaches selector glob construction or a host proxy. */
export declare function isSafeGraphAdapterMetadata(value: unknown): value is GraphAdapterDescriptor;
/** Validate the full callable graph-adapter contract. */
export declare function isSafeGraphAdapterDescriptor(value: unknown): value is GraphLanguageAdapter;
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