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fix(plugin-react): apply babel.plugins to project files only #5255

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merged 5 commits into from
Nov 9, 2021

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aleclarson
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@aleclarson aleclarson commented Oct 11, 2021

The idea here is to avoid parsing node_modules whenever possible, since that can be expensive in larger projects.

Here's the heuristic I'm using to skip parsing:

 const isNodeModules = id.includes('/node_modules/')
 const isProjectFile = id.startsWith(projectRoot + '/') && !isNodeModules
 const shouldSkip =
   !plugins.length &&
   !opts.babel?.configFile &&
   !(isProjectFile && opts.babel?.babelrc)

For global plugins, set babel.configFile to true and create a babel.config.js file in your project root.

Future

We could detect a babel.config.js file in your project root and enable babel.configFile option automatically.

if (useAutomaticRuntime) {
// By reverse-compiling "React.createElement" calls into JSX,
// React elements provided by dependencies will also use the
// automatic runtime!
const [restoredAst, isCommonJS] = isNodeModules
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A slight difference in behavior here:

  • Linked packages will now have their React.createElement calls reverse-compiled into JSX, so they will also use the automatic JSX runtime.

@aleclarson aleclarson added the p2-nice-to-have Not breaking anything but nice to have (priority) label Oct 12, 2021
@benmccann
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Just a heads up - this one will need a rebase

const isJSX = extension.endsWith('x')
const isNodeModules = id.includes('/node_modules/')
const isProjectFile =
!isNodeModules && (id[0] === '\0' || id.startsWith(projectRoot + '/'))
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If a virtual module wants to avoid being transformed by Babel, it can include /node_modules/ in its module ID.

patak-dev
patak-dev previously approved these changes Nov 8, 2021
@patak-dev patak-dev added p4-important Violate documented behavior or significantly improves performance (priority) and removed p2-nice-to-have Not breaking anything but nice to have (priority) needs rebase labels Nov 8, 2021
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👍 Working well in Hydrogen! Thank you!

@patak-dev
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Thanks for checking this out @jplhomer! Let's release a patch for vite 2.6 and plugin-react with these changes then

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5 participants