on-build-webpack/on_build_webpack.js

Webpack plugin that gives ability to add callback after build

/**
 * @module WebpackOnBuildPlugin
 */

/**
 * @constructor
 * @param {onBuildCallback} callback - will be called right after build.
 */
function WebpackOnBuildPlugin(callback) {
  this.callback = callback;
};

/**
 * @callback onBuildCallback
 * @param {object} stats - webpack stats object
 */

/**
 * @param {object} compiler
 */
WebpackOnBuildPlugin.prototype.apply = function(compiler) {
  compiler.plugin('done', this.callback);
};

module.exports = WebpackOnBuildPlugin;