Dijkstra created by steTheWhiteFox - https://repl.it/@steTheWhiteFox/Dijkstra

Dijkstra.js

const graph = {
  start: { A: 5, B: 2 },
  A: { C: 4, D: 2 },
  B: { A: 8, D: 7 },
  C: { D: 6, finish: 3 },
  D: { finish: 1 },
  finish: {},
};
console.log(graph);

const costs = {
  A: 5,
  B: 2,
  finish: Infinity,
};
console.log(costs);

const parents = {
  A: 'start',
  B: 'start',
  finish: null,
};
console.log(parents);