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extremely fast, zero config server for modern web applications.

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# sørvør

> lightning fast, zero config build tool for modern Javascript and Typescript.

## Introduction

`sørvør` is a lightweight replacement for heavier, more complex build tools such as webpack or parcel. It is an opinionated take on [`esbuild`](https://esbuild.github.io/) with sane default and plugins to enhance your development workflow.

## Major Features

- **Instant Startup**: `sørvør` is authored in [golang](https://golang.org/), which offers the best startup time for command line applications. Often times, `sørvør` will finish bundling your project by the time a `node.js` bundler starts loading.
- **Easy Installation**: `sørvør` is distributed as a single binary for all major platforms. It's just one command to install `sørvør` using installation method of your choice.
- **Optimize for Production**: Build for production with built-in optimizations and Asset Pipeline.

## Installation

The easiest method to install sørvør is using `npm` or `yarn`:

```bash
npm install sorvor
# or
yarn add sorvor
```

Alternatively, if you have [go](https://golang.org/) installed, use `go get` to install sørvør:

```bash
go get github.com/osdevisnot/sorvor
```

Once installed, verify your installation using `version` flag

```bash
sorvor --version
```

## Quickstart

You can always refer [example projects](examples) for fully integrated setup using `sørvør`. To get started, let's set up a simple Preact application using `sørvør`. First, create a minimal scaffold using `degit`:

```bash
npx degit osdevisnot/sorvor-minimal preact-hello
```

The minimal scaffold comes with a README.md file with short description of available commands. Let's start the live reloading server using the command from README.md:

```bash
sorvor --serve
```

This should bundle your project and start a live reloading server at [http://localhost:1234](http://localhost:1234).

Now, let's add a simple Preact Component which renders Hello World.

```js
import { h, render } from "preact";

const Counter = () => <div>Hello World</div>;

render(<Counter />, document.body);
```

You should notice an error on terminal which should look like this:

```log
2021/02/23 09:55:58 Warn: Unexpected "<"
```

This error indicates sørvør was unable to parse JSX syntax we just entered. Let's restart sørvør to be able to parse JSX Syntax:

```bash
sorvor --serve --loader:.js=jsx --jsx-factory=h
```

On restart, your browser should display Hello World rendered using preact.

## Node.js Usage

You can use `sørvør` to bundle browser based applications, but it is equally suitable for node.js applications as well. Let's try to build a simple express server using `sørvør` as build tool.

First of, create a project directory and install `express` as a dependency:

```bash
mkdir hello-server
cd hello-server
npm init --yes
npm install express
```

Now, let's create a `server.js` file in src directory, and paste below code in it:

```js
import express from "express";

const app = express();
const port = 3000;

app.get("/", (req, res) => {
  res.send("Hello World !!");
});

app.listen(port, () => {
  console.log(`App Ready on http://localhost:${port}`);
});
```

Now, let's start the build using

```bash
sorvor src/server.js --serve --platform=node
```

The platform node automatically adds all the dependencies from `package.json` as external. The `serve` when combined with node platform, builds the entry file and starts running it once the build is complete. Try visiting [http://localhost:3000](http://localhost:3000) to see "Hello World" rendered in the browser.

## Asset Pipeline

The asset pipeline for `sørvør` is partially inspired by HUGO pipes. To use the asset pipeline, use below annotations in your HTML entrypoint.

### Live Reload

`sørvør` supports live reloading connected browsers based on [SSE Web API](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events).

To use this feature, include the livereload annotation in your HTML entrypoint like this:

```html
<html>
  ...
  <body>
    {{ livereload }}
  </body>
  ...
</html>
```

### Bundle with `esbuild`

To run an entrypoint through `esbuild`, use `esbuild` annotation in your HTML entrypoint like this:

```html
<script type="module" src="{{ esbuild "index.js" }}"></script>
```

### Copy static files

To copy a file from source to outdir, use `copy` annotation in your HTML entrypoint like this:

```html
<link rel="shortcut icon" href='{{ copy "assets/favicon.ico" }}' type="image/x-icon" />
```

## Plugins

`sørvør` enhances esbuild with few quality of life plugins. These plugins are enabled by default and require no configuration for usage.

### env plugin

The env plugin imports the current environment variables at build time. You can use the environment variables like this:

```js
import { PATH } from "env";
console.log(`PATH is ${PATH}`);
```

## Configuration

For most part, `sørvør` tries to use sensible defaults, but you can configure the behaviour using command line arguments below:

| cli argument | description                | default value |
| ------------ | -------------------------- | ------------- |
| `--host=...` | host for sørvør            | `localhost`   |
| `--port=...` | port for sørvør            | `1234`        |
| `--serve`    | enable development mode    | `false`       |
| `--secure`   | use https with `localhost` | `false`       |

> `sørvør` forwards all the other command line arguments to `esbuild`.

> `--secure` automatically creates a self-signed certificate for provided host.

> to disable chrome warnings, open chrome://flags/#allow-insecure-localhost and change the setting to "Enabled".

Please refer documentation for [simple esbuild options](https://esbuild.github.io/api/#simple-options) or [advance options](https://esbuild.github.io/api/#advanced-options) to further customize the bundling process.

`sørvør` configures below values for esbuild as defaults which you can override using command line arguments:

| cli argument   | description                         | default value |
| -------------- | ----------------------------------- | ------------- |
| `--outdir=...` | target directory for esbuild output | `dist`        |

`sørvør` configures below values for esbuild which can not be changed:

| cli argument | description                          | default value                                 |
| ------------ | ------------------------------------ | --------------------------------------------- |
| `--bundle`   | enables bundling output files        | `true`                                        |
| `--write`    | enables writing built output to disk | `true`                                        |
| `--define`   | value for `process.env.NODE_ENV`     | `production` and `development` with `--serve` |

## Inspirations

This project is inspired by [servør](https://www.npmjs.com/package/servor) from [Luke Jackson](https://twitter.com/lukejacksonn), which provides similar zero dependency development experience but lacks integration with a bundler/build tools.

## License

**sørvør** is licensed under the [MIT License](http://opensource.org/licenses/MIT).

Documentation is licensed under [Creative Commons License](http://creativecommons.org/licenses/by/4.0/).

Created with ❤️ by [@osdevisnot](https://github.com/osdevisnot) and [all contributors](https://github.com/osdevisnot/sorvor/graphs/contributors).

sorvor

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