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Joe Savona
9ad4418715
We previously always generated import statements for any modules that had to be required, notably the `import {c} from 'react/compiler-runtime'` for the memo cache function. However, this obviously doesn't work when the source is using commonjs. Now we check the sourceType of the module and generate require() statements if the source type is 'script'.
I initially explored using https://babeljs.io/docs/babel-helper-module-imports, but the API design was unfortunately not flexible enough for our use-case. Specifically, our pipeline is as follows:
* Compile individual functions. Generate candidate imports, pre-allocating the local names for those imports.
* If the file is compiled successfully, actually add the imports to the program.
Ie we need to pre-allocate identifier names for the imports before we add them to the program — but that isn't supported by babel-helper-module-imports. So instead we generate our own require() calls if the sourceType is script.
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.