This guide covers installing **Deno.js** and **Bun.js** in **Termux** using **proot Ubuntu**.

## 1. Install Termux and Proot Ubuntu  
First, update Termux and install Ubuntu using `proot-distro`:  

```sh
pkg update && pkg upgrade -y
pkg install proot-distro -y
proot-distro install ubuntu
proot-distro login ubuntu
```

## 2. Update Ubuntu and Install Dependencies

```sh
apt update && apt upgrade -y
apt install curl wget unzip git -y
```

---

## Installing Deno.js

Run the official Deno installer:

```sh
curl -fsSL https://deno.land/install.sh | sh
source ~/.bashrc
```

Verify installation:

```sh
deno --version
```

---

## Installing Bun.js

Run the official Bun installer:

```sh
curl -fsSL https://bun.sh/install | bash
source ~/.bashrc
```

Verify installation:

```sh
bun --version
```

---

## Notes

- Deno.js installation automatically sets the environment variables, so we only need to reload the shell (`source ~/.bashrc`).
- Bun.js may have compatibility issues on proot Ubuntu. If you encounter issues, check the latest discussions in Bun’s GitHub repository.