import { TManagerState } from './inspector-types';

export type TScalarDiff = {
    field: string;
    from: unknown;
    to: unknown;
};
export type TMapDiffEntry<V> = {
    key: string;
    change: "added" | "removed" | "changed";
    from?: V;
    to?: V;
};
export type TMapDiff<V> = {
    entries: TMapDiffEntry<V>[];
};
export type TSetDiffEntry = {
    key: string;
    change: "added" | "removed";
};
export type TSetDiff = {
    entries: TSetDiffEntry[];
};
export type TSnapshotDiff<TClientMsg> = {
    scalars: TScalarDiff[];
    subscriptionRefCounts: TMapDiff<number>;
    subscriptionData: TMapDiff<TClientMsg | undefined>;
    inFlightMessages: TMapDiff<TClientMsg>;
    pendingSubscriptions: TSetDiff;
    protocols: {
        from: readonly string[];
        to: readonly string[];
    } | null;
};
export declare function computeSnapshotDiff<TClientMsg>(prev: TManagerState<TClientMsg>, next: TManagerState<TClientMsg>): TSnapshotDiff<TClientMsg>;
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