@sld0ant/pi-diff

High-performance diff patch for pi-agent with Patience algorithm and WASM acceleration.

Quick Install

bunx @sld0ant/pi-diff install

Uninstall

bunx @sld0ant/pi-diff uninstall

Check Status

bunx @sld0ant/pi-diff status

Features

• Patience algorithm for code — better structure preservation (functions, classes)
• Myers algorithm for data — faster for JSON, YAML, Markdown
• WASM acceleration — 5-8x faster on large files (>1000 lines)
• 80 KB — compact universal WASM bundle

How It Works

Auto Algorithm Selection

| File Type | Algorithm | Reason | |-----------|-----------|--------| | .ts, .js, .py, .rs, .go | Patience | Preserves code structure | | .json, .yaml, .md, .txt | Myers | Faster for data | | >10000 lines | Myers | Performance |

Example Difference

Refactoring: moving a function

Myers shows:

-function hello() { ... }
+function world() { ... }

(thinks hello was replaced with world)

Patience shows:

+function world() { ... }
 
 function hello() { ... }

(understands world was added, hello stayed)

Performance

| File Size | JS (diff) | WASM (@sld0ant/pi-diff) | Speedup | |-----------|-----------|-------------------------|---------| | 1000 lines | 4ms | 2.5ms | 1.6x | | 5000 lines | 119ms | 21ms | 5.6x | | 10000 lines | 520ms | 64ms | 8.1x |

Build from Source

Prerequisites

• Rust + cargo
• wasm-pack (cargo install wasm-pack)
• Bun

Build

bun install
bun run build

Local Install

bun run install-patch

After Updating pi-agent

When pi-agent is updated, the patch will be overwritten. Reinstall:

bunx @sld0ant/pi-diff install

License

MIT