export interface GraphLike<V> {
    getVertices(): Iterable<V>;
    getSourceVertices(node: V): Iterable<V>;
    getTargetVertices(node: V): Iterable<V>;
    readonly edgeCount: number;
    readonly vertexCount: number;
}
export interface Graph<V = string> extends GraphLike<V> {
    addEdge(a: V, b: V): void;
    addVertex(v: V): void;
    deleteEdge(a: V, b: V): void;
    getEdges(): Iterable<[V, V]>;
    hasEdge(a: V, b: V): boolean;
}
export interface LabeledGraph<V = string, L = string> extends GraphLike<V> {
    addEdge(a: V, b: V, label: L): void;
    addVertex(v: V): void;
    deleteEdge(a: V, b: V, label?: L): void;
    getEdges(): Iterable<[V, V, L]>;
    getIncomingEdges(node: V): Iterable<[V, L]>;
    getOutgoingEdges(node: V): Iterable<[V, L]>;
    hasEdge(a: V, b: V, label?: L): boolean;
}
export interface AsyncGraphLike<V> {
    getSourceVertices(node: V): AsyncIterable<V>;
    getTargetVertices(node: V): AsyncIterable<V>;
    getVertices(): AsyncIterable<V>;
    readonly edgeCount: Promise<number>;
    readonly vertexCount: Promise<number>;
}
export interface AsyncGraph<V = string> extends AsyncGraphLike<V> {
    addEdge(a: V, b: V): Promise<void>;
    addVertex(v: V): Promise<void>;
    deleteEdge(a: V, b: V): Promise<void>;
    getEdges(): AsyncIterable<[V, V]>;
    hasEdge(a: V, b: V): Promise<boolean>;
}
export interface AsyncLabeledGraph<V = string, L = string> extends AsyncGraphLike<V> {
    addEdge(a: V, b: V, label: L): Promise<void>;
    addVertex(v: V): Promise<void>;
    deleteEdge(a: V, b: V, label?: L): Promise<void>;
    getEdges(): AsyncIterable<[V, V, L]>;
    getIncomingEdges(node: V): AsyncIterable<Array<[V, L]>>;
    getOutgoingEdges(node: V): AsyncIterable<Array<[V, L]>>;
    hasEdge(a: V, b: V, label?: L): Promise<boolean>;
}
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