dev-filterjs

dev-filterjs

dev-filterjs is a robust and extensible filtering utility designed for JavaScript and Vite-based development environments. It offers flexible filtering mechanisms for data streams and log pipelines, and integrates easily with tools like Bunyan and Winston.

Features

• Advanced data/log filtering for development and build pipelines
• Compatible with logging tools like Bunyan, Winston, or custom implementations
• Lightweight with zero dependencies
• Flexible filtering rules and conditions
• Supports both console and file outputs
• TypeScript ready with full typings

Installation

Using npm:

npm install dev-filterjs --save-dev

Using Yarn:

yarn add dev-filterjs -D

Usage

Integrate it in your vite.config.js or vite.config.ts:

import { defineConfig } from "vite";
import devFilterJS from "dev-filterjs";

export default defineConfig({
  plugins: [
    devFilterJS({
      logLevel: "info",
      format: "json",
      output: "console",
    }),
  ],
});

Configuration Options

Option	Type	Default	Description
logLevel	'info' | 'warn' | 'error' | 'debug'	'info'	Minimum log level to output
format	'json' | 'pretty' | 'bunyan'	'pretty'	Log/filter output format
output	'console' | 'file'	'console'	Output destination
outputPath	string	undefined	Path to file output if output is 'file'
includeTimestamp	boolean	true	Whether to include timestamps

Example Output

Pretty Format

[dev-filterjs] [INFO] Server started on http://localhost:5173
[dev-filterjs] [DEBUG] Filter applied to 25 items

JSON Format

{
  "level": "info",
  "timestamp": "2025-06-07T14:32:00.000Z",
  "message": "Filter applied to 25 items"
}

License

MIT © [dmytryi]

Contributing

Contributions are welcome! Feel free to open issues or pull requests.