collectPreloads() — astro Function Reference

Architecture documentation for the collectPreloads() function in view-transitions.test.js from the astro codebase.

Function javascript E2ETesting TestFixtures

Entity Profile

E2ETesting→ TestFixtures→ collectPreloads() — astro Function Reference

Dependency Diagram

graph TD
  c89f0fdb_aa9d_4981_d062_6713f5d8743e["collectPreloads()"]
  b4c19437_37d7_2f07_374e_31b46d21464b["view-transitions.test.js"]
  c89f0fdb_aa9d_4981_d062_6713f5d8743e -->|defined in| b4c19437_37d7_2f07_374e_31b46d21464b
  style c89f0fdb_aa9d_4981_d062_6713f5d8743e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/astro/e2e/view-transitions.test.js lines 31–43

function collectPreloads(page) {
	return page.evaluate(() => {
		window.preloads = [];
		const observer = new MutationObserver((mutations) => {
			mutations.forEach((mutation) =>
				mutation.addedNodes.forEach((node) => {
					if (node.nodeName === 'LINK' && node.rel === 'preload') preloads.push(node.href);
				}),
			);
		});
		observer.observe(document.head, { childList: true });
	});
}