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https://github.com/levp/wrapper-webpack-plugin
A webpack plugin that wraps output files (chunks) with custom text or code.
https://github.com/levp/wrapper-webpack-plugin
webpack webpack-plugin
Last synced: 5 days ago
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A webpack plugin that wraps output files (chunks) with custom text or code.
- Host: GitHub
- URL: https://github.com/levp/wrapper-webpack-plugin
- Owner: levp
- Created: 2016-01-23T01:39:43.000Z (almost 9 years ago)
- Default Branch: master
- Last Pushed: 2023-08-09T01:16:01.000Z (over 1 year ago)
- Last Synced: 2024-04-27T00:23:52.192Z (8 months ago)
- Topics: webpack, webpack-plugin
- Language: JavaScript
- Homepage:
- Size: 31.3 KB
- Stars: 91
- Watchers: 4
- Forks: 36
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# A webpack plugin that wraps output files (chunks) with custom text or code.
## Installation
Install locally using npm:
`npm i -D wrapper-webpack-plugin`
#### Webpack compatibility
Version 2 of this plugin only works with webpack >=4.\
For webpack <4 use [version 1](https://github.com/levp/wrapper-webpack-plugin/tree/v1) of the plugin with `npm i -D wrapper-webpack-plugin@1`
## Usage
The `WrapperPlugin` class has a single parameter, an object with a `header` and/or `footer` properties. Header text will
be *prepended* to the output file, footer text will be *appended*. These can be either a string or a function. A string
will simply be a appended/prepended to the file output. A function is expected to return a string, and will receive the
name of the output file as an argument.
An optional `test` property (a string or a `RegExp` object) can control which output files are affected; otherwise all output files will be wrapped.
*New in 2.1:*
The optional `afterOptimizations` property can be used to avoid having the added text affected by the optimization stage, e.g. if you don't want it to be minified.
## API
```
function WrapperPlugin({
test: string | RegExp,
header: string | function,
footer: string | function,
afterOptimizations: bool // default: false
})
```
## Example configuration #1
Wraps bundle files with '.js' extension in a self invoking function and enables strict mode:
```javascript
const WrapperPlugin = require('wrapper-webpack-plugin');
module.exports = {
// other webpack config here
plugins: [
// strict mode for the whole bundle
new WrapperPlugin({
test: /\.js$/, // only wrap output of bundle files with '.js' extension
header: '(function () { "use strict";\n',
footer: '\n})();'
})
]
};
```
## Example configuration #2
Prepends bundles with a doc comment:
```javascript
const WrapperPlugin = require('wrapper-webpack-plugin');
module.exports = {
// other webpack config here
plugins: [
new WrapperPlugin({
header: function (fileName) {
return '/*! file: ' + fileName + ', created by dev123 */\n';
}
})
]
};
```
## Example configuration #3
Accessing file name, build hash, and chunk hash at runtime.
```javascript
const WrapperPlugin = require('wrapper-webpack-plugin');
module.exports = {
// other webpack config here
output: {
filename: '[name].[chunkhash].js'
},
plugins: [
new WrapperPlugin({
header: `(function (FILE_NAME, BUILD_HASH, CHUNK_HASH) {`,
footer(fileName, args) {
return `})('${fileName}', '${args.hash}', '${args.chunkhash}');`;
// note: args.hash and args.chunkhash correspond to the [hash] and [chunkhash]
// placeholders you can specify in the output.filename option.
}
})
]
};
```
## Example configuration #4
Keeping header in a separate file:
file: `header.js`
```javascript
/*!
* my awesome app!
*/
```
file: `webpack.config`
```javascript
const fs = require('fs');
WrapperPlugin = require('wrapper-webpack-plugin');
const headerDoc = fs.readFileSync('./header.js', 'utf8');
module.exports = {
// other webpack config here
plugins: [
new WrapperPlugin({
header: headerDoc
})
]
};
```
## Example configuration #5
A slightly more complex example using `lodash` templates:
```javascript
const WrapperPlugin = require('wrapper-webpack-plugin');
const template = require('lodash.template');
const pkg = require('./package.json');
const tpl = '/*! <%= name %> v<%= version %> | <%= author %> */\n';
module.exports = {
// other webpack config here
plugins: [
new WrapperPlugin({
header: template(tpl)(pkg)
})
]
};
```
## Compatibility with other plugins
This plugin should play nicely with most other plugins.
E.g. adding the `webpack.optimize.UglifyJsPlugin` plugin to the plugins array *after* the `WrapperPlugin` will result in
the wrapper text also being minified.
## License
[ISC](https://opensource.org/licenses/ISC)