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conformance · v152

v152 · opaquerange — 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/dom/pull/1404 chromestatus: #6297362687066112 generated 2026-07-15T10:00:00Z by manual-openai-v152-coverage
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pass
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fail
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6
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id contract kind verdict detail
opaque-range-exists OpaqueRange is exposed as a global constructor. spec ↗ exists
opaque-range-get-bounding-client-rect OpaqueRange.prototype.getBoundingClientRect is a function returning a DOMRect. typeof
opaque-range-get-client-rects-is-function OpaqueRange.prototype.getClientRects is a function returning a DOMRectList. typeof
opaque-range-has-start-end-offsets OpaqueRange instances expose startOffset and endOffset properties. script
highlight-accepts-opaque-range Highlight constructor accepts an OpaqueRange (integration with CSS Custom Highlight API). spec ↗ script
css-highlights-registry-exists CSS.highlights registry exists so OpaqueRanges can be registered as named highlights. spec ↗ exists