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react/compiler
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mofeiZ 1460d67c5b
[compiler][hir] Only hoist always-accessed PropertyLoads from function decls (#31066) 
Stack from [ghstack](https://github.com/ezyang/ghstack) (oldest at
bottom):
* __->__ #31066
* #31032

Prior to this PR, we consider all of a nested function's accessed paths
as 'hoistable' (to the basic block in which the function was defined).
Now, we traverse nested functions and find all paths hoistable to their
*entry block*.

Note that this only replaces the *hoisting* part of function
declarations, not dependencies. This realistically only affects optional
chains within functions, which always get truncated to its inner
non-optional path (see
[todo-infer-function-uncond-optionals-hoisted.tsx](576f3c0aa8/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/propagate-scope-deps-hir-fork/reduce-reactive-deps/todo-infer-function-uncond-optionals-hoisted.tsx))

See newly added test fixtures for details

Update: Note that toggling `enableTreatFunctionDepsAsConditional` makes
a non-trivial impact on granularity of inferred deps (i.e. we find that
function declarations uniquely identify some paths as hoistable).
Snapshot comparison of internal code shows ~2.5% of files get worse
dependencies ([internal
link](https://www.internalfb.com/phabricator/paste/view/P1625792186))
2024-10-03 14:41:32 -04:00
..
apps/playground [playground] Decouple playground from compiler 2024-09-27 15:25:07 -04:00
crates Fix rust lints 2024-08-06 14:48:32 -04:00
docs Punctuation & correcting spelling mistakes (#30592) 2024-08-09 14:53:53 -07:00
packages [compiler][hir] Only hoist always-accessed PropertyLoads from function decls (#31066) 2024-10-03 14:41:32 -04:00
scripts [compiler] Publish to latest tag 2024-08-12 14:41:11 -04:00
.eslintrc.js [compiler:codegen] Wrap non-ascii characters in JsxExpressionContainer 2024-06-21 10:08:15 -04:00
.gitignore [.gitignore] Add bundle script 2024-04-16 14:41:13 +01:00
Cargo.lock Bump rustix from 0.37.22 to 0.37.27 in /compiler (#29173) 2024-05-20 12:02:35 +01:00
Cargo.toml Update references to Forget to React Compiler 2024-05-02 14:28:06 -07:00
package.json [playground] Decouple playground from compiler 2024-09-27 15:25:07 -04:00
README.md Update readme and other docs 2024-05-06 14:53:47 -07:00
rust-toolchain.toml
rustfmt.toml
yarn.lock [playground] Decouple playground from compiler 2024-09-27 15:25:07 -04:00

README.md

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.