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extend-webpack-plugin
Advanced tools
A Webpack helper to extend a given webpack plugin's functionality
A simple helper to extend another webpack plugin's functionality.
This will extend the other plugin's prototype to your one and copy the callbacks that the other plugin appends to the compiler on a property named compilerCallbacks.
$ npm install --save-dev extend-webpack-plugin
Ensure you have webpack installed, e.g. npm install -g webpack
After installing our plugin and the plugin you want to extend (static-site-generator-webpack-plugin in the following example) you can start coding your extension
$ npm install --save-dev extend-webpack-plugin static-site-generator-webpack-plugin
const StaticSiteGeneratorWebpackPlugin = require('static-site-generator-webpack-plugin');
const ExtendWebpackPlugin = require('extend-webpack-plugin');
function MyCustomStaticSiteGeneratorPlugin() {
const compilerCallbacks = ExtendWebpackPlugin(this, arguments).compilerCallbacks;
this.emitCallback = compilerCallbacks['emit'];
}
MyCustomStaticSiteGeneratorPlugin.inheritsFrom(StaticSiteGeneratorWebpackPlugin);
MyCustomStaticSiteGeneratorPlugin.prototype.apply = function(compiler) {
var self = this;
compiler.plugin('emit', function(compiler, done) {
self.locals.greet = "Hello from custom"; // Extend param
return self.emitCallback(compiler, done); // call static-site-generator-webpack-plugin's emit callback
});
};
module.exports = MyCustomStaticSiteGeneratorPlugin;
const MyCustomStaticSiteGeneratorPlugin = require('./my-custom-plugin');
const paths = [
'/hello/',
'/world/'
];
const locals = {};
module.exports = {
entry: {
'main': './index.js'
},
output: {
filename: 'index.js',
path: 'build',
libraryTarget: 'umd'
},
plugins: [
new MyCustomStaticSiteGeneratorPlugin('main', paths, locals)
]
};
// Client render (optional):
if (typeof document !== 'undefined') {
console.log('Client render code goes here...');
}
// Exported static site renderer:
module.exports = function render(locals, callback) {
callback(null, '<html>' + locals.greet + ' on ' + locals.path + '</html>');
};
As you can see in the previous example (full code here), you can extend a plugin by:
Calling ExtendWebpackPlugin on constructor:
function MyCustomStaticSiteGeneratorPlugin() {
const compilerCallbacks = ExtendWebpackPlugin(this, arguments).compilerCallbacks;
this.emitCallback = compilerCallbacks['emit'];
}
Then you will call inheritsFrom function of your plugin to the other.
This is a special function that ExtendWebpackPlugin create on Function.prototype, that extend the other plugin's prototype and create a property named parent on your plugin:
MyCustomStaticSiteGeneratorPlugin.inheritsFrom(StaticSiteGeneratorWebpackPlugin);
Finally create your own apply function and create custom steps before or after calling the original plugin's callback
MyCustomStaticSiteGeneratorPlugin.prototype.apply = function(compiler) {
var self = this;
compiler.plugin('emit', function(compiler, done) {
self.locals.greet = "Hello from custom"; // Extend param
return self.emitCallback(compiler, done); // call static-site-generator-webpack-plugin's emit callback
});
};
FAQs
A Webpack helper to extend a given webpack plugin's functionality
The npm package extend-webpack-plugin receives a total of 3 weekly downloads. As such, extend-webpack-plugin popularity was classified as not popular.
We found that extend-webpack-plugin demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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