/*!
 * Copyright (c) Microsoft Corporation and contributors. All rights reserved.
 * Licensed under the MIT License.
 */
import type { ISequencedDocumentMessage } from "@fluidframework/driver-definitions/internal";
import type { LocalContainerRuntimeMessage } from "../messageTypes.js";
import type { EmptyGroupedBatch } from "./opGroupingManager.js";
/**
 * Takes an incoming runtime message (outer type "op"), JSON.parses the message's contents in place,
 * if needed (old Loader does this for us).
 * Only to be used for runtime messages. The contents here would be the virtualized payload for a batch of ops.
 * @remarks Serialization during submit happens via {@link serializeOp}
 * @param mutableMessage - op message received
 */
export declare function ensureContentsDeserialized(mutableMessage: ISequencedDocumentMessage): void;
/**
 * Before submitting an op to the Outbox, its contents must be serialized using this function.
 * @remarks The deserialization on process happens via the function {@link ensureContentsDeserialized}.
 *
 * @param toSerialize - op message to serialize. Also supports an array of ops.
 */
export declare function serializeOp(toSerialize: EmptyGroupedBatch | LocalContainerRuntimeMessage | LocalContainerRuntimeMessage[]): {
    content: string;
};
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