Deezify

Deezify is a small Bun-based patcher that modifies the Deezer desktop app.asar to inject a custom script and enable developer mode.

Features

• Backs up the original app.asar before patching (with timestamped folders).
• Extracts Deezer's app.asar, injects a script tag into build/index.html, and writes a bundled deezify.js payload.
• Enables Deezer's developer mode by rewriting the relevant JavaScript.

Requirements

• OS: Currently only Windows is supported (uses %LOCALAPPDATA%\\Programs\\deezer-desktop).
• Runtime: Bun >= 1.3.x.
• Node/npm: Only needed for installing dependencies, not for running the CLI.

Installation

Clone the repository and install dependencies:

bun install

Build the CLI and browser payload:

bun run build

This outputs compiled files into dist/ and wires the CLI entry at dist/cli.js.

Usage

Patch Deezer

From the project root, run:

bun run patch

This will:

1. Locate the Deezer installation under %LOCALAPPDATA%\\Programs\\deezer-desktop.
2. Extract resources\\app.asar into a temporary folder.
3. Inject a <script src="./deezify.js"></script> tag into build/index.html.
4. Write the bundled deezify.js script into the extracted build folder.
5. Enable developer mode by rewriting Deezer's JS bundle.
6. Repack the folder into app.asar and overwrite the original.

If you prefer to execute the compiled CLI directly:

cd dist
bun run .\\cli.js

Once published globally (e.g. via npm or bun), you can also use the deezify binary defined in package.json.

Backups

Backups are stored under the system-specific data directory returned by env-paths for the app name Deezify. On Windows this is typically something like:

C:\\Users\\<you>\\AppData\\Roaming\\Deezify\\<YYMM.DD.HHMM>[-patched]\\app.asar

• -patched is appended if the current app.asar already contains the injected deezify.js script.

Development

• Source entrypoints:
  • CLI: src/cli.ts
  • Injected script: src/inject/main.ts
• Build script: build.ts (uses Bun's build() API).
• Utility helpers in src/utils/ handle Deezer install path discovery, backup, and dev-mode bypass.

Run ESLint (with auto-fix) over the sources:

bun run validate

Limitations

• Only Deezer desktop on Windows (default installation path) is supported.
• Other platforms (macOS, Linux) are not implemented in install-path.ts.
• Use at your own risk; patching app.asar may be against Deezer's terms of service.