Diagnosability: fetch/XHR error fidelity and modern AbortSignal (#196)#200

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bkaradzic-microsoft merged 3 commits into

BabylonJS:mainfrom

bkaradzic-microsoft:hop2-fetch-error-fidelity

Jul 7, 2026

Commits on Jun 16, 2026

Hop 2: surface transport-failure detail through fetch and XMLHttpRequest
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Address review: robust Error-constructor detection + document XHR error event
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Commits on Jul 7, 2026

Hop 4: honor init.signal in fetch and modernize AbortSignal
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