Coverage / FileAPI

File API

Specification: w3c.github.io/FileAPI/. 4 interfaces defined here, 31 members exposed on Window (Web IDL). Group: Test DOM core.

Existence only: “present” means the name is defined where Web IDL puts it, not that it behaves as the standard says. The featured checks test behavior.

Share present per engine
Engine	Members present	Interfaces present
warpdom0.1.6maintainer's engine	87% (27 of 31)	4 of 4
happy-dom21.0.3	45% (14 of 31)	4 of 4
jsdom30.1.3	87% (27 of 31)	4 of 4
linkedom0.18.13	35% (11 of 31)	2 of 4

Blob8 membersPresentPresentPresentNode.js

File2 membersPresentPresentPresentNode.js

FileList2 membersPresentPresentPresentMissing

FileReader17 membersPresentPresentPresentMissing

URL2 members added to URL (defined in URL)0/22/20/22/2

Probed 2026-10-19. Data: idl.json (CC BY 4.0).