Use Supabase with React

<$Partial path="quickstart_db_setup.mdx" />

<StepHikeCompact.Details title="Create a React app">

- Create a React app using a [Vite](https://vitejs.dev/guide/) template.

<$Partial path="uiLibCta.mdx" />

</StepHikeCompact.Details>

<StepHikeCompact.Code>

  ```bash name=Terminal
  npm create vite@latest my-app -- --template react
  ```

</StepHikeCompact.Code>

The fastest way to get started is to use the `supabase-js` client library which provides a convenient interface for working with Supabase from a React app.

Navigate to the React app and install `supabase-js`.

</StepHikeCompact.Details>

<StepHikeCompact.Code>

  ```bash name=Terminal
  cd my-app && npm install @supabase/supabase-js
  ```

</StepHikeCompact.Code>

Create a `.env.local` file and populate with your Supabase connection variables:

<ProjectConfigVariables variable="url" />
<ProjectConfigVariables variable="publishable" />


</StepHikeCompact.Details>

<StepHikeCompact.Code>

  <$CodeTabs>

    ```text name=.env.local
    VITE_SUPABASE_URL=<SUBSTITUTE_SUPABASE_URL>
    VITE_SUPABASE_PUBLISHABLE_KEY=<SUBSTITUTE_SUPABASE_PUBLISHABLE_KEY>
    ```

  </$CodeTabs>

  <$Partial path="api_settings_steps.mdx" variables={{ "framework": "react", "tab": "frameworks" }} />

</StepHikeCompact.Code>

Replace the contents of `App.jsx` to add a `getInstruments` function to fetch the data and display the query result to the page using a Supabase client.

</StepHikeCompact.Details>
<StepHikeCompact.Code>

  ```js name=src/App.jsx
  import { useEffect, useState } from "react";
  import { createClient } from "@supabase/supabase-js";

  const supabase = createClient(import.meta.env.VITE_SUPABASE_URL, import.meta.env.VITE_SUPABASE_PUBLISHABLE_KEY);

  function App() {
    const [instruments, setInstruments] = useState([]);

    useEffect(() => {
      getInstruments();
    }, []);

    async function getInstruments() {
      const { data } = await supabase.from("instruments").select();
      setInstruments(data);
    }

    return (
      <ul>
        {instruments.map((instrument) => (
          <li key={instrument.name}>{instrument.name}</li>
        ))}
      </ul>
    );
  }

  export default App;
  ```

</StepHikeCompact.Code>

Run the development server, go to http://localhost:5173 in a browser and you should see the list of instruments.

</StepHikeCompact.Details>

<StepHikeCompact.Code>

  ```bash name=Terminal
  npm run dev
  ```

</StepHikeCompact.Code>