fliphub-monorepo/modules-sub/flip-webpack-chain/lib/Plugin.js

the builder of builders

'use strict';

const ChainedMap = require('./ChainedMap');

module.exports = class extends ChainedMap {
  constructor(parent) {
    super(parent);
    this.extend(['init']);

    this.init((Plugin, args = []) => new Plugin(...args));
  }

  use(plugin, args = []) {
    return this.set('plugin', plugin).set('args', args);
  }

  tap(f) {
    this.set('args', f(this.get('args') || []));
    return this;
  }

  merge(obj) {
    if (obj.plugin) {
      this.set('plugin', obj.plugin);
    }

    if (obj.args) {
      this.set('args', obj.args);
    }

    return this;
  }

  toConfig() {
    const init = this.get('init');

    return init(this.get('plugin'), this.get('args'));
  }
};