Add React.createContext to @babel/plugin-transform-react-pure-annotations

[jessethomson]

Feature Request

• I would like to work on this feature!
  (I don't actually care who works on this, but I'm happy to do it. Whatever is easier.)

Is your feature request related to a problem?

I have a React component library. When consuming applications use the library, a bunch of React.createContext calls are added to the bundle for components that aren't even being used. This shouldn't be the case as createContext simply takes in some parameters and returns an object.

Describe the solution you'd like

Super pumped about the new @babel/plugin-transform-react-pure-annotations package. I would like to add React.createContext to this PURE_CALLS map.

babel/packages/babel-plugin-transform-react-pure-annotations/src/index.js

Lines 10 to 23 in 71d3527

	const PURE_CALLS = new Map([
	[
	"react",
	[
	"cloneElement",
	"createElement",
	"createFactory",
	"createRef",
	"forwardRef",
	"isValidElement",
	"memo",
	"lazy",
	],
	],

Describe alternatives you've considered.

Nothing. I'm open to them, but this seems straightforward enough.

Documentation, Adoption, Migration Strategy

Adoption and Migration are simple a npm update. Not sure is this is something that is documented or not. I'm guessing not.

[babel-bot]

Hey @jessethomson! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite."

[jessethomson]

Created a PR for this: #11685

[mischnic]

Can be closed now

[jessethomson]

The @babel/preset-react still has the old version of this plugin. Will that eventually get updated to use the latest version that includes this change? Or should I create an issue or something for that?

[nicolo-ribaudo]

@babel/preset-react uses ^ to specify the version of the plugin, so it can already download the latest one.

[jessethomson]

Oh, I totally missed that. Awesome!