Viewing github.com/facebook/react/fixtures/packaging/README.md

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# Manual Testing Fixtures
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This folder exists for **React contributors** only.

If you use React, you don't need to worry about it.

These fixtures verify that the built React distributions are usable in different environments.

**They are not running automatically.** (At least not yet. Feel free to contribute to automate them.)

Run them when you make changes to how we package React and ReactDOM.

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## How to Run
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First, build React and the fixtures:
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cd react
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npm run build
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node fixtures/packaging/build-all.js
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Then run a local server, e.g.
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npx pushstate-server .
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and open the following URL in your browser: [http://localhost:9000/fixtures/packaging/index.html](http://localhost:9000/fixtures/packaging/index.html)

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You should see two things:
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* A number of iframes (corresponding to various builds), with "Hello World" rendered in each iframe.

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* No errors in the console.
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