The original title is "React 19 Unstable Features: Update or Ignore ESLint Rules?"

Short summary

React 19 labels experimental APIs as 'unstable', triggering ESLint warnings that require teams to choose between immediate updates or pragmatic suppression. The article explains React's API maturity lifecycle (experimental → core → deprecated) and recommends tiered linting: strict enforcement in greenfield projects, flexible rules in legacy codebases during scheduled maintenance. This balances modern patterns with engineering velocity and reduces refactoring risk.

• •React 19's 'unstable' API labels trigger ESLint warnings, forcing decisions about code updates versus rule suppression
• •APIs follow a predictable maturity journey with a clear migration window before deprecation
• •Use tiered linting strategies rather than wholesale configuration changes for successful React upgrades

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