Function joinIterators

Example

import { assertEquals } from "jsr:@std/assert"

const iterator_a = function* (): Iterable<number> {
	let count = 5
	while ((--count) > 0) { yield count }
}
const iterator_b = function* (): Iterable<number> {
	let count = -5
	while ((++count) < 0) { yield count }
}
const iterator_c = function* (): Iterable<number> {
	let count = 10
	while ((--count) > 5) { yield count }
}

assertEquals([
	...joinIterators(iterator_a(), iterator_b(), iterator_c())
], [
	 4,  3,  2,  1, // iterator_a values
	-4, -3, -2, -1, // iterator_b values
	 9,  8,  7,  6, // iterator_c values
])
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