Method del

lib/tiny-graph.js:48–58

(x, y)

		}

		del (x, y) {
			let result = false;

			if (defined(this.nodes[x]) && defined(this.nodes[x].edges[y])) {
				delete this.nodes[x].edges[y];
				delete this.nodes[y].edges[x];
				result = true;
			}

			return result;
		}

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