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@rushstack/hashed-folder-copy-plugin

Installation

npm install @rushstack/hashed-folder-copy-plugin --save-dev

Overview

This webpack plugin provides a simple method for copying a folder to the build output and including a hash in the folder's name, accessible to the bundle's runtime.

Usage

In your Webpack config, include the plugin in your plugins array:

import { HashedFolderCopyPlugin } from '@rushstack/hashed-folder-copy-plugin';

{
  plugins: [
    new HashedFolderCopyPlugin()
  ]
}

and call the requireFolder function in your webpack bundle:

const folderUrl = requireFolder({
  outputFolder: 'my-folder-name_[hash]',
  sources: [
    {
      globsBase: '../assets/',
      globs: ['**/*.png']
    }
  ]
})

TypeScript typings are provided for the requireFolder function:

import type { IRequireFolderOptions } from '@rushstack/hashed-folder-copy-plugin';

declare function requireFolder(options: IRequireFolderOptions): string;

const folderUrl: string = requireFolder({
  outputFolder: 'my-folder-name_[hash]',
  sources: [
    {
      globsBase: '../assets/',
      globPatterns: ['**/*.png']
    }
  ]
})

The requireFolder takes an options object with two properties:

outputFolder

This is the name of the folder to be created in the webpack output folder. Its name supports a [hash] token, which will be replaced with a stable hash of the assets that are copied to the folder. Note that the [hash] token is not required.

sources

This is an array of glob base paths and glob patterns that will be copied to the output folder. Each entry in this array takes a globsBase property, which is the base path to the folder to be copied, and a globPatterns property, which is an array of glob patterns to be evaluated under the globsBase folder. The path in globsBase supports standard Node resolution.

Example project

See the example project.

A note about ambient types

To get the requireFolder function type to work in TypeScript, include a reference to "@rushstack/hashed-folder-copy-plugin/ambientTypes" in your tsconfig.json file's compilerOptions.types property. For example:

{
  "compilerOptions": {
    "types": [
      "webpack-env",
      "@rushstack/hashed-folder-copy-plugin/ambientTypes" // This value, specifically
    ]
  }
}