Demigodd

let data = [
  {id: 489, name: "Nickname"},
  {id: 345, name: "Email"}
];

<div>
{
  data.map((dat, index) => {
    return (
      <Link>{dat.name}</Link>
    )
  })
}
</div>

function activation() {
  getData(true);
}

function getData(isActivation) {
  getHandler()
    .then(() => {
      if (isActivation)
        hello();
      }
    }); 
}

0.3 - 0.1                     // 0.19999999999999998
x = new Decimal(0.3)
x.minus(0.1)                  // '0.2'

const fuzzy = {
  split: n => {
    const parts = n.toExponential().split('e')
      .map((p, i) => i ? parseInt(p) : p.split('.').map(x => parseInt(x)));
    if (parts[0].length < 2) parts[0].push(0);
    return [parts[0][0], parts[0][1], parts[1]];
  },
  
  eq: (a, b) => {
    a = fuzzy.split(a);
    b = fuzzy.split(b);
    
    if (a[2] !== b[2]) return false;
    const diff = Math.abs(a[1] - b[1]);
    if (diff === 0) return Math.abs(a[0] - b[0]) <= 1;
    if (a[0][0] !== b[0][0]) return false;
    return (diff <= 1);
  }
}

const tests = [
  [1, 1, true],
  [111, 112, true],
  [0.001, .002, true],
  [0.001, .0025, false],
  [0.001, .003, false],
  [12.345, 1.2345, false],
  [123.88, 123.870, true],
  [-1.11111111, 1.11111110, false],
  [-1.11111111, -1.11111112, true],
  [2.000000001, 2, true],
  [4.9999999998, 4.9999999999, true],
  [7.9, 8.02, false],
  [7.99, 7.98, true],
  [7.99, 7.99, true],
  [7.99, 8.00, true],  // НЕ ПРОХОДИТ! Надо этот случай предусмотреть, но я ушёл спать.
];


let allok = true;
tests.forEach(test => {
  if (fuzzy.eq(...test) !== test[2]) {
    console.log("FAIL:", test);
    allok = false;
  } else {
    console.log("OK:", test);
  }
});
console.log(allok ? 'All OK!' : "Some tests FAILED");

const compare= (v, v2) => {
   const parts = String(v).split('.')
   const pow = parts.length > 1 ? parts.pop().length : 0     
   return Math.round(Math.abs(v - v2) * Math.pow(10, pow)) <= 1
}

console.log(compare(7.98, 7.99)) // true
console.log(compare(7.98, 7.97)) // true
console.log(compare(7.98, 8)) // false
console.log(compare(0.1, 0.15)) // true

const compare= (v, v2) => {
   const parts = [v, v2].map(v => String(v).split('.'))
   const pow = Math.max(...parts.map(v => v.length > 1 ? v.pop().length : 0))
   return Math.round(Math.abs(v - v2) * Math.pow(10, pow)) <= 1
}

console.log(compare(7.98, 7.99)) // true
console.log(compare(7.98, 7.97)) // true
console.log(compare(7.98, 8)) // false
console.log(compare(0.1, 0.15)) // false

const i = 1e12;
const arr = [4753632.03, 1928767.61, 1039533.49, 49312.87];
let result =  arr.reduce( (sum, curr) => {
  return sum + curr * i;
} , 0);
result = result / i; // 7771246

файл сразу же занимает