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conformance · v143

v143 · fileapi-blob-bytes — 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://www.w3.org/TR/FileAPI chromestatus: #4830298126417920 generated 2026-06-01T10:40:00Z by conformance-author-v1-subagent
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pass
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fail
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blocked
6
total
id contract kind verdict detail
blob-bytes-on-prototype Blob.prototype.bytes is exposed. spec ↗ script
blob-bytes-is-function Blob.prototype.bytes is a function. spec ↗ typeof
blob-bytes-returns-promise Blob.prototype.bytes() returns a Promise. spec ↗ script
blob-bytes-resolves-to-uint8array Blob.prototype.bytes() resolves to a Uint8Array (not a raw ArrayBuffer). spec ↗ script
blob-bytes-data-roundtrip-length Bytes returned by Blob.bytes() has the same length as the source bytes. spec ↗ script
file-inherits-bytes File (subclass of Blob) inherits bytes() via prototype chain. spec ↗ script