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Joe Savona
5eb09a72c4
Two small QoL improvements inspired by feedback:
* `if (ref.current == undefined) { ref.current = ... }` is now allowed.
* `if (!ref.current) { ref.current = ... }` is still disallowed, but we emit an extra hint suggesting the `if (!ref.current == null)` pattern.
I was on the fence about the latter. We got feedback asking to allow `if (!ref.current)` but if your ref stores a boolean value then this would allow reading the ref in render. The unary form is also less precise in general due to sketchy truthiness conversions. I figured a hint is a good compromise.
React Compiler
React Compiler is a compiler that optimizes React applications, ensuring that only the minimal parts of components and hooks will re-render when state changes. The compiler also validates that components and hooks follow the Rules of React.
More information about the design and architecture of the compiler are covered in the Design Goals.
More information about developing the compiler itself is covered in the Development Guide.