Developer advocates testing data state before styling market dashboards

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A developer from AGProLabs highlights that market dashboards can display incorrect data despite perfect visual rendering. The article presents a standalone JavaScript example for testing data contracts between incoming data and its UI representation. The example function classifies data snapshots as CONFIRMED, LIVE_PREVIEW, STALE, or INVALID based on timestamps and validation rules. It emphasizes using explicit timestamps and instrument identifiers rather than relying on UI context alone. The approach aims to prevent data-contract failures where stale or mismatched data incorrectly updates a dashboard.

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