Checks if a given array has multiple items of the same data type next to each other. In the test code it checks if a given array has three numbers cohesively. This time using array.reduce

checkIfArrayHasNValuesOfSameDataTypeCohesively2.js

const array1 = [1,2,'a',3,'b',4,5]
const array2 = [1,2,'a',3,'b',4,5,6,'k']

const checkIfArrayHasNValuesOfSameDataTypeCohesively = datatype => n => array => (array.reduce((acc, val) => {
    if ((acc.n = typeof val != datatype ? 0 : acc.n + 1) >= n) acc.passed = true;
    return acc;
}, {n: 0, passed: false})).passed;

console.log(checkIfArrayHasNValuesOfSameDataTypeCohesively('number')(3)(array1)); // false
console.log(checkIfArrayHasNValuesOfSameDataTypeCohesively('number')(3)(array2)); // true