Node.js Debugging

console.log("সাধারণ output");
console.error("Error message");
console.warn("Warning message");

// structured data
console.table([
  { name: "রহিম", age: 25 },
  { name: "করিম", age: 30 },
]);

// time tracking
console.time("loop");
for (let i = 0; i < 1000000; i++) {}
console.timeEnd("loop");

// group output
console.group("User Info");
console.log("Name: রহিম");
console.log("Age: 25");
console.groupEnd();

# --inspect দিয়ে debug mode চালু
node --inspect app.js

# breakpoint-এ থামাবে
node --inspect-brk app.js

# তারপর Chrome-এ chrome://inspect খুলুন

function calculateTotal(items) {
  let total = 0;
  for (const item of items) {
    debugger; // এখানে থামবে
    total += item.price;
  }
  return total;
}

calculateTotal([{ price: 10 }, { price: 20 }]);

const util = require("node:util");

const obj = {
  name: "রহিম",
  address: {
    city: "ঢাকা",
    zip: "1205",
  },
};

// deep inspection
console.log(util.inspect(obj, {
  showHidden: false,
  depth: null,      // সব depth দেখাবে
  colors: true,     // colored output
  compact: false,
}));