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ghostty/example/wasm-vt/README.md
Mitchell Hashimoto 8fab3ac3f3 example/wasm-vt
2026-03-30 10:16:19 -07:00

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# WebAssembly VT Terminal Example
This example demonstrates how to use the Ghostty VT library from WebAssembly
to initialize a terminal, write VT-encoded data to it, and format the
terminal contents as plain text.
## Building
First, build the WebAssembly module:
```bash
zig build -Demit-lib-vt -Dtarget=wasm32-freestanding -Doptimize=ReleaseSmall
```
This will create `zig-out/bin/ghostty-vt.wasm`.
## Running
**Important:** You must serve this via HTTP, not open it as a file directly.
Browsers block loading WASM files from `file://` URLs.
From the **root of the ghostty repository**, serve with a local HTTP server:
```bash
# Using Python (recommended)
python3 -m http.server 8000
# Or using Node.js
npx serve .
# Or using PHP
php -S localhost:8000
```
Then open your browser to:
```
http://localhost:8000/example/wasm-vt/
```