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 711x 711x 711x 711x 711x 711x 2x 244x 244x 244x 244x 244x 244x 2x 2x 2x 2x 2x 906x 432x 432x 432x 906x 906x 2x 2x 2x 2x 2x 330x 122x 122x 122x 330x 330x 2x 2x 2x 2x 2x 15309x 279x 279x 15309x 122x 122x 15309x  
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();
	}
}