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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"add validation for feature flag definition","articleBody":"Feature flags are provided by IFeatureFlagProvider.\r\n\r\nhttps://github.com/microsoft/FeatureManagement-JavaScript/blob/b70bbd341107b4093632d7272418884b5138de16/src/featureProvider.ts#L7-L18\r\n\r\nWe have two impl of feature flag providers for map-based and object-based usage. Data source can be arbitrary data but none of them validate whether a feature flag is valid according to the schema, which is not as robust as expected.\r\n\r\nTwo follow-up actions:\r\n- In our built-in IFeatureFlagProvider impl, add validation and throw errors when data source itself is invalid.\r\n- As customers can impl their own provider (potentially provide invalid data), in our impl of public APIs like `isEnabled` and `getVariant`, we can add validation after getting a feature flag from the provider, ensure we don't encounter unexpected error later.\r\n","author":{"url":"https://github.com/Eskibear","@type":"Person","name":"Eskibear"},"datePublished":"2024-07-31T07:00:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/14/FeatureManagement-JavaScript/issues/14"}