Records & Tuples for React

Records & Tuples, a very interesting proposal, has just reached stage 2 at TC39.

They bring deeply immutable data structures to JavaScript.

But don't overlook their equality properties, that are VERY interesting for React.

A whole category of React bugs are related to unstable object identities:

• Performance: re-renders that could be avoided
• Behavior: useless effect re-executions, infinite loops
• API surface: unability to express when a stable object identity matters

I will explain the basics of Records & Tuples, and how they can solve real world React issues.

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