RunKit + npm: deep-object-diff

const { diff, addedDiff, deletedDiff, detailedDiff, updatedDiff } = require("deep-object-diff"); const right = { 1: "Tom", 2: "reads", 3: ",", 4: "novels" }; const wrong = { 1: "Tom", 2: "reads", 3: "novels", 4: "," }; console.log(detailedDiff(right, wrong));