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This adds type declarations for RPC methods implemented by the Flagship service. The change is additive, and the existing get() method remains available with a deprecation notice, so no compatibility flag is needed.
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edmundhung
reviewed
Oct 19, 2026
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Is there any context you can share about deprecating this API? It's quite rare we deprecate an API on a binding, so just wanna learn more about the case here.
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AFAIK Record<string, unknown> cannot be used to match an interface and this would fail:
interface Config { theme: string }
const fallback: Config = { theme: "light" };
flags.getObjectValue("config", fallback); // accepted
flags.getValue("config", fallback); // TypeScript error
flags.getDetails("config", fallback); // TypeScript error
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Summary
Dependencies
The configuration version lets the Flagship OpenFeature provider invalidate cached binding evaluations without maintaining a background stream in Worker isolates.
Test plan
just generate-typesbazel test //types:test/types/flagship