webpack-get-files-plugin

Webpack plugin for extracting output assets filenames into a separate JSON file according to the Entrypoints specified in the webpack configuration.

The main purpose of writing this plugin is that I had a project structure where I was working with NodeJS, Express, Pug (view engine) and webpack. So basically, webpack was building my assets with names having random content hashes like index.d53b3te33yi3y.js and it was difficult for me to inject those assets into my views e.g. index.pug. That's why I came up with webpack-get-files-plugin that extracts the filenames of the output assets into a GetFiles.json file and I can easily inject them into my views.

Installation

npm install webpack-get-files-plugin --save-dev

Usage

The Webpack Configuartion:

const path = require('path');

// Requiring webpack-get-files-plugin
const GetFilesPlugin = require('webpack-get-files-plugin');

const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
	mode: 'production',
	entry: {
		home: path.join(__dirname, 'src', 'home.js'),
	},
	output: {
		path: path.join(__dirname, 'dist'),
		filename: 'js/[name].[contentHash].js',
	},
	plugins: [
		// Using the webpack-get-files-plugin
		new GetFilesPlugin(),

		new CleanWebpackPlugin(),
		new MiniCssExtractPlugin({
			filename: 'css/[name].[contentHash].css',
		}),
	],
	module: {
		rules: [
			{
				test: /\.css$/,
				use: [MiniCssExtractPlugin.loader, 'css-loader'],
			},
			{
				test: /\.(png|jpg|svg|gif|jpeg)/,
				use: {
					loader: 'file-loader',
					options: {
						name: 'images/[name].[contentHash].[ext]',
					},
				},
			},
		],
	},
};

After running the webpack build process, this plugin will emit a file named GetFiles.json in the root directory of your project.

Structure of GetFiles.json

{
	"entrypoints": ["home"],
	"files": {
		"home": {
			"filenames": [
			    "css/home.c43adcd817b4eaa62b97.css",
			    "js/home.5e994fb65e62d205d1c5.js",
			    "{\"name\": \"webpack-logo.png\"}??gffm??images/webpack-logo.3b7bf087cbac835e6f7d4b7dc9711e72.png"
			],
			"assets": {
				"css": ["css/home.c43adcd817b4eaa62b97.css"],
				"js": ["js/home.5e994fb65e62d205d1c5.js"],
				"images": {
					"webpack-logo.png":  "images/webpack-logo.3b7bf087cbac835e6f7d4b7dc9711e72.png",
					"github.svg":  "images/github.16a9304e38fd8167989291ab92544e14.svg"
				}
			}
		}
	}
}

Demo Project

I have created a demo project in demo-webpack-get-files-plugin directory to help you better understand how this plugin works. This demo project does not contain example of working with NodeJS, Express and Pug.

For that I have a separate boilerplate project where I have used this plugin. @mhm13dev/node-express-webpack-pug

To See How This Plugin Works in Action:

Clone this repo:

git clone https://github.com/mhm13dev/webpack-get-files-plugin.git

Change into repo's directory

cd webpack-get-files-plugin

Change into demo project directory

cd demo-webpack-get-files-plugin

Install the dependencies

npm install

Run the webpack build process

npm run webpack

Then have a look at the dist directory and GetFiles.json file inside demo-webpack-get-files-plugin directory.