import { type JsonObject } from './json.js';
export interface SchemaSnapshot {
    schema: JsonObject;
    /** Where it came from; null for an inline schema. `path` is relative to the real project root. */
    source: {
        path: string;
        bytes: number;
        sha256: string;
    } | null;
}
/** Loads `ref` (a path under `projectRoot`), checks it against the dialect and returns the snapshot. */
export declare function loadSchemaRef(projectRoot: string, ref: unknown): SchemaSnapshot;
/** An inline schema (checked against the dialect) or a `{ "$ref": "path.json" }` file load. */
export declare function resolveSchemaSource(input: unknown, projectRoot: string): SchemaSnapshot;
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