Method getEdgeValue

src/graph.js:62–71

(x, y)

		}

		getEdgeValue (x, y) {
			const n = this.nodes[x];
			let result;

			if (defined(n) && defined(n.edges[y])) {
				result = n.edges[y];
			}

			return result;
		}

		getNodeValue (x) {
			const n = this.nodes[x];