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conformance · v148

v148 · opaquerange — conformance probe

5 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/dom/pull/1404 chromestatus: #6297362687066112 generated 2026-06-01T08:14:38Z by conformance-author-v1-subagent
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pass
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fail
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blocked
5
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id contract kind verdict detail
opaque-range-exists OpaqueRange is exposed on the global object. spec ↗ script
opaque-range-get-bounding-client-rect OpaqueRange.prototype.getBoundingClientRect is a function. spec ↗ script
opaque-range-get-client-rects OpaqueRange.prototype.getClientRects is a function. script
opaque-range-start-container-null OpaqueRange exposes a startContainer accessor whose value is null (encapsulation guarantee). spec ↗ script
highlight-api-still-available The CSS Custom Highlight API (which OpaqueRange feeds into) is available. exists