Function reduce

Calls a callback function for all the elements in an Iterable. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.

Works like Array.prototype.reduce.

Example

Sum all numbers

const sum = reduce((acc, curr) => acc + curr, 0);
const result = sum([1, 2, 3]);
console.log(result); // 6

See

filter, flatMap, map and sum for similar operations.

Returns

the reduced value