Readonly lookup, failure, and per-call option contracts.
A locale match is always present in runtime diagnostics; an unmatched request
uses a result with matchType: "none". Callback records retain the original
cause and match references. Options omit settings to inherit the instance.
Readonly lookup, failure, and per-call option contracts. A locale match is always present in runtime diagnostics; an unmatched request uses a result with
matchType: "none". Callback records retain the original cause and match references. Options omit settings to inherit the instance.