Initial commit

Author: developit

.gitignore

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+node_modules
+*.log
+package-lock.json
+dist
+build

README.md

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+# preact-cli-plugin-async [![npm](https://img.shields.io/npm/v/preact-cli-plugin-async.svg)](https://npm.im/preact-cli-plugin-async)
+
+[Preact CLI] plugin that adds optimized support for async/await via [Kneden].
+
+## Installation
+
+```bash
+npm i -D preact-cli-plugin-async
+```
+
+... then include it in your project by creating a `preact.config.js`:
+
+```js
+import asyncPlugin from 'preact-cli-plugin-async';
+
+export default (config) => {
+  asyncPlugin(config);
+}
+```
+
+## License
+
+MIT © [developit](https://github.com/developit)
+
+[Kneden]: https://github.com/babel/kneden

async-plugin.js

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+export default function asyncPlugin(config) {
+	let babel = config.module.loaders.filter( loader => loader.loader === 'babel-loader')[0].options;
+
+	// Blacklist regenerator within env preset:
+	babel.presets[0][1].exclude.push(
+		'transform-async-to-generator',
+		'transform-regenerator'
+	);
+
+	// Replace stage-1 preset with an inlined, flattened version without regenerator:
+	babel.presets.pop();
+	babel.plugins.push(
+		'transform-export-extensions',
+		'syntax-dynamic-import',
+		'transform-class-properties',
+		'transform-object-rest-spread'
+	);
+
+	// Add Kneden
+	babel.plugins.push(require.resolve('babel-plugin-async-to-promises'));
+}

package.json

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+{
+  "name": "preact-cli-plugin-async",
+  "version": "1.0.0",
+  "description": "Preact CLI plugin that adds optimized support for async/await via Kneden.",
+  "main": "dist/async-plugin.js",
+  "source": "async-plugin.js",
+  "scripts": {
+    "build": "microbundle",
+    "test:build": "ln -fs ../node_modules test && preact build --cwd test && bundlesize -f 'test/build/bundle.*.js' -s 4.5kB",
+    "test": "eslint async-plugin.js && npm run -s build && npm run -s test:build"
+  },
+  "eslintConfig": {
+    "extends": "eslint-config-developit"
+  },
+  "keywords": [
+    "preact",
+    "preact-cli",
+    "preact cli plugin"
+  ],
+  "author": "Jason Miller <jason@developit.ca> (http://jasonformat.com)",
+  "license": "MIT",
+  "devDependencies": {
+    "bundlesize": "^0.15.3",
+    "eslint": "^4.13.1",
+    "eslint-config-developit": "^1.1.1",
+    "microbundle": "^0.2.4",
+    "preact-cli": "^2.1.0"
+  },
+  "dependencies": {
+    "babel-plugin-async-to-promises": "^1.0.5"
+  }
+}

test/index.js

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+import { Component } from 'preact';
+
+export default class Foo extends Component {
+	async update() {
+		let source = await (await fetch('/')).text();
+		this.setState({ source });
+	}
+
+	componentDidMount() {
+		this.update();
+	}
+
+	render({}, { source }) {
+		return (
+			<div>
+				<h2>HTML Source:</h2>
+				<pre>{source}</pre>
+			</div>
+		);
+	}
+}

test/preact.config.js

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+import asyncPlugin from '..';
+
+export default config => {
+	asyncPlugin(config);
+};