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conformance · v133

v133 · filesystemobserver-interface — conformance probe

6 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://github.com/whatwg/fs/pull/165 chromestatus: #4622243656630272 generated 2026-06-01T08:12:59Z by conformance-author-v1-subagent
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id contract kind verdict detail
filesystemobserver-exposed The FileSystemObserver interface is exposed on the global object. spec ↗ exists
filesystemobserver-constructor FileSystemObserver is constructible. typeof
filesystemobserver-construct-with-callback new FileSystemObserver(callback) does not throw when called with a function argument. script
filesystemobserver-observe-method FileSystemObserver.prototype exposes an observe method to watch a handle for changes. script
filesystemobserver-unobserve-method FileSystemObserver.prototype exposes an unobserve method. script
filesystemobserver-disconnect-method FileSystemObserver.prototype exposes a disconnect method to stop all observations. script