import {range} from '@iterable-iterator/range'; range( 3 ) ; // 0 1 2 range( 2 , 5 ) ; // 2 3 4 range( 5 , 2 , -1 ) ; // 5 4 3 range(Number.MAX_SAFE_INTEGER).has(1234); // true range(0, 10, 2).get(3); // 6 // If you only use the iterator feature you can save bytes by calling the // IterableIterator function directly import {forwardRangeIterator, backwardRangeIterator} from '@iterable-iterator/range'; for (const x of forwardRangeIterator(0, 10, 1)) ... for (const x of backwardRangeIterator(10, 0, -1)) ... // caveat: This requires you to specify all parameters, and choose the correct // implementation depending on the sign of the `step` parameter. // For convenience, rangeIterator will return the correct kind of // IterableIterator without constructing a Range object. It has the same signature // as the range function. import {rangeIterator as range} from '@iterable-iterator/range';