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conformance · v132

v132 · file-system-access — conformance probe

8 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://wicg.github.io/file-system-access/ chromestatus: #6284708426022912 generated 2026-06-01T08:30:00Z by conformance-author-v1-subagent
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pass
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fail
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blocked
8
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id contract kind verdict detail
show-open-file-picker-exists window.showOpenFilePicker is the entry point to the File System Access API. spec ↗ typeof
show-save-file-picker-exists window.showSaveFilePicker is exposed. spec ↗ typeof
show-directory-picker-exists window.showDirectoryPicker is exposed. spec ↗ typeof
file-system-handle-class FileSystemHandle is exposed as the base interface. spec ↗ exists
file-system-file-handle-class FileSystemFileHandle is exposed. exists
file-system-directory-handle-class FileSystemDirectoryHandle is exposed. exists
writable-file-stream-class FileSystemWritableFileStream is exposed for streaming writes. spec ↗ exists
create-writable-method FileSystemFileHandle.prototype.createWritable is a function. spec ↗ typeof