Add support for React components. (#18)

* Add support for React components.

This adds support for react components via a new `extensions` config in astro.config.mjs. In the future we can extend this to do things like look at the import statements, as Snowpack does.

* Fix the tests

1 files changed, 40 insertions, 0 deletions

diff --git a/test/react-component.test.js b/test/react-component.test.js
new file mode 100644
index 000000000..0b6273922
--- /dev/null
+++ b/test/react-component.test.js
@@ -0,0 +1,40 @@
+import { suite } from 'uvu';
+import * as assert from 'uvu/assert';
+import { createRuntime } from '../lib/runtime.js';
+import { loadConfig } from '../lib/config.js';
+import { doc } from './test-utils.js';
+
+const React = suite('React Components');
+
+let runtime;
+
+React.before(async () => {
+  const astroConfig = await loadConfig(new URL('./fixtures/react-component', import.meta.url).pathname);
+
+  const logging = {
+    level: 'error',
+    dest: process.stderr
+  };
+
+  try {
+    runtime = await createRuntime(astroConfig, logging);
+  } catch(err) {
+    console.error(err);
+    throw err;
+  }
+});
+
+React.after(async () => {
+  await runtime.shutdown();
+});
+
+React('Can load hmx page', async () => {
+  const result = await runtime.load('/');
+
+  assert.equal(result.statusCode, 200);
+
+  const $ = doc(result.contents);
+  assert.equal($('h2').text(), 'Hello world!');
+});
+
+React.run();
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