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vim-ale/bun/README.md
2023-02-26 05:57:14 +00:00

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---
title: Bun
homepage: https://bun.sh
tagline: |
Bun is a fast all-in-one JavaScript runtime
---
To update or switch versions, run `webi bun@<tag>`. \
(you can use `@beta` for pre-releases, or `@x.y.z` for a specific version)
### Files
These are the files / directories that are created and/or modified with this
install:
```text
~/.config/envman/PATH.env
~/.local/opt/bun/
~/.local/opt/bun-<VERSION>/
```
## Cheat Sheet
> Bun is a wicked-fast JavaScript runtime for developer tooling, API servers,
> and edge computing.
>
> It's built in Zig and provides a more curated, "batteries-included" approach
> to developing with JavaScript and JavaScript-ish languages - such as
> TypeScript, JSX, and TSX.
Run some <strong><em>x</em></strong>Script:
```sh
bun run ./hello.js
bun run ./hello.jsx
bun run ./hello.ts
bun run ./hello.tsx
```
Run a package from `npm`:
```sh
bun x jswt
```
More goodies:
```
bun help
```
(there's also a built-in **development server** and lots of stuff)
### bun<span>.</span>sh/install vs webi
Bun has an official installer:
```sh
export BUN_INSTALL="$HOME/.bun"
curl -fsSL https://bun.sh/install | bash
```
You might want to still use webi if you want to be able to switch between
versions.
### How to install command line completions
```sh
bun completions
```
### How to create a bun executable
1. Create your script
```sh
vim ./hello
```
```js
#!/usr/bin/env bun
console.log('hello');
```
2. Make it executable
```sh
chmod a+x ./hello
```
3. Run it
```sh
./hello
```
### How to publish bun packages
At the time of this writing (bun v0.5.1), you'll still need to publish with
`npm`.
`npm` is installed with [node](/node).
See
[Getting Started with NPM (as a developer)](https://gist.github.com/coolaj86/1318304).
### How to install bun packages
You can run it with `bun x`:
```sh
bun x <whatever>
```
Or you can put the `#!/usr/bin/env bun` shebang before publishing, and install
from npm:
```sh
bun install -g <whatever>
<whatever>
```
### How to run a Bun program as a service
As a system service on Linux:
(**note**: swap 'my-project' and './my-project' for the name of your project and
file)
1. Install serviceman (compatible with systemd)
```sh
webi serviceman
source ~/.config/envman/PATH.env
```
2. Go into your program's directory
```sh
pushd ./my-project/
```
3. Add your project to the system launcher, running as the current user
```sh
sudo env PATH="$PATH" \
serviceman add --path="$PATH" --system \
--username "$(whoami)" --name my-project -- \
bun run ./my-project.js
```
4. Restart the logging service
```sh
sudo systemctl restart systemd-journald
```
For **macOS**:
1. Install serviceman (compatible with `launchctl`)
```sh
webi serviceman
source ~/.config/envman/PATH.env
```
2. Go into your program's directory
```sh
pushd ./my-project/
```
3. Add your project to the system launcher, running as the current user
```sh
serviceman add --path="$PATH" --user --name my-project -- \
bun run ./my-project.js
```