Under the hood
Useful2 Signal2
One rule now decides which server errors count as temporary, so retries behave consistently.
What's wrong with this entry?
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What
One predicate now decides what counts as a temporary outage: any status 500 or above, plus 429 and 408. It marks watch-token startup responses as unavailable and, with the close-code decoder, decides whether a failed live subscribe is a retryable stall.
Evidence
return e !== void 0 && (e >= 500 || e === 429 || e === 408);
Strings lifted out of the shipped bundle, so the claim above can be checked against them.