TypedArray.prototype.some()

function isNegative(element, index, array) {
  return element < 0;
}

const int8 = new Int8Array([-10, 20, -30, 40, -50]);
const positives = new Int8Array([10, 20, 30, 40, 50]);

console.log(int8.some(isNegative));
// Expected output: true

console.log(positives.some(isNegative));
// Expected output: false

typedarray.some(callback[, thisArg])

function isBiggerThan10(element, index, array) {
  return element > 10;
}
new Uint8Array([2, 5, 8, 1, 4]).some(isBiggerThan10); // false
new Uint8Array([12, 5, 8, 1, 4]).some(isBiggerThan10); // true

new Uint8Array([2, 5, 8, 1, 4]).some((elem) => elem > 10); // false
new Uint8Array([12, 5, 8, 1, 4]).some((elem) => elem > 10); // true