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conformance · v149

v149 · uint8array-base64-hex — conformance probe

7 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://tc39.es/proposal-arraybuffer-base64/spec chromestatus: #6281131254874112 generated 2026-06-01T08:15:14Z by conformance-author-v1-subagent
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id contract kind verdict detail
uint8array-from-base64-exists Uint8Array.fromBase64 is a static function. spec ↗ typeof
uint8array-to-base64-on-prototype Uint8Array.prototype.toBase64 is a function. spec ↗ typeof
to-base64-round-trip Encoding then decoding a Uint8Array via base64 yields the same bytes. spec ↗ script
uint8array-from-hex-exists Uint8Array.fromHex is a static function. spec ↗ typeof
uint8array-to-hex-on-prototype Uint8Array.prototype.toHex is a function. spec ↗ typeof
to-hex-round-trip Encoding then decoding hex round-trips a Uint8Array losslessly. spec ↗ script
from-base64-throws-on-bad-input fromBase64 throws on a string that is not valid base64. spec ↗ throws