Write to file plugin for webpack(v4)

This is a simple webpack plugin for writing data to file. And there is a similar plugin for webpack v3.

Features

1. support creating directory recursively
2. support data of function type, which allows processing data in complex situation
3. support native options of underlying writeFileSync
4. support protection of an exsited file

Installation

npm install --save-dev write-to-file-webpack

Usage

The data to be written can be either a simple javascript variable, or a function which returns some data.

const WriteToFilePlugin = require('write-to-file-webpack');

module.exports = {
  ...
  plugins: [
     new WriteToFilePlugin({ 
        filename: 'path/to/write/file', 
        data: 'console.log("write to file")'
      })
  ]
  ...
}

const WriteToFilePlugin = require('write-to-file-webpack');

module.exports = {
   ...
   plugins: [
      new WriteToFilePlugin({ 
         filename: 'path/to/write/file', 
         data: function () {
            return "console.log('write to file')"
         }
     })
   ]
   ...
}

If the data is provided as a function, we can do more operations than just simply returning the data to be written. For example, if we wanna write to a file parts of an exsited file say package.json, and more specifically, removing the dependencies and devDependencies items, with write-to-file-webpack we can do this:

const WriteToFilePlugin = require('write-to-file-webpack');
const config = require('./package.json');

module.exports = {
   ...
   plugins: [
      new WriteToFilePlugin({ 
         filename: 'path/to/write/package.json', 
         data: function () {
            return JSON.stringify({
               ...config,
               dependencies: undefined,
               devDependencies: undefined,
           });
         }
     })
   ]
   ...
}

Of course, if we want to copy the whole content of a existed file, there is webpack plugin called copy-webpack-plugin.

Support

node >= 6 and webpack >= 4

Options

• filename (required)
• data (required)
• override
  <boolean> Default: true, if set to false, no data will be written to an exsited file
• encoding
  <string> | <null> Default: 'utf8'
• mode
  <integer> Default: 0o666
• flag
  <string> Default: 'w'

For more information about encoding, mode, and flag please refer to node writeFile.