All files / src/internal/client/dom task.js

100% Statements 64/64
90.9% Branches 10/11
100% Functions 6/6
100% Lines 63/63

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 642x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1856x 1856x 1856x 1856x 1856x 1856x 2x 258x 258x 258x 258x 258x 258x 2x 2x 2x 2x 2x 1812x 1023x 1023x 1023x 1812x 1812x 2x 2x 2x 2x 2x 341x 129x 129x 129x 341x 341x 2x 2x 2x 2x 2x 16189x 833x 833x 16189x 129x 129x 16189x  
import { run_all } from '../../shared/utils.js';
 
// Fallback for when requestIdleCallback is not available
const request_idle_callback =
	typeof requestIdleCallback === 'undefined'
		? (/** @type {() => void} */ cb) => setTimeout(cb, 1)
		: requestIdleCallback;
 
let is_micro_task_queued = false;
let is_idle_task_queued = false;
 
/** @type {Array<() => void>} */
let current_queued_micro_tasks = [];
/** @type {Array<() => void>} */
let current_queued_idle_tasks = [];
 
function process_micro_tasks() {
	is_micro_task_queued = false;
	const tasks = current_queued_micro_tasks.slice();
	current_queued_micro_tasks = [];
	run_all(tasks);
}
 
function process_idle_tasks() {
	is_idle_task_queued = false;
	const tasks = current_queued_idle_tasks.slice();
	current_queued_idle_tasks = [];
	run_all(tasks);
}
 
/**
 * @param {() => void} fn
 */
export function queue_micro_task(fn) {
	if (!is_micro_task_queued) {
		is_micro_task_queued = true;
		queueMicrotask(process_micro_tasks);
	}
	current_queued_micro_tasks.push(fn);
}
 
/**
 * @param {() => void} fn
 */
export function queue_idle_task(fn) {
	if (!is_idle_task_queued) {
		is_idle_task_queued = true;
		request_idle_callback(process_idle_tasks);
	}
	current_queued_idle_tasks.push(fn);
}
 
/**
 * Synchronously run any queued tasks.
 */
export function flush_tasks() {
	if (is_micro_task_queued) {
		process_micro_tasks();
	}
	if (is_idle_task_queued) {
		process_idle_tasks();
	}
}