robotstxt-webpack-plugin/dist/RobotstxtPlugin.js

A webpack plugin to output a robots.txt file

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _generateRobotstxt = _interopRequireDefault(require("generate-robotstxt"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

class RobotstxtPlugin {
  constructor(options = {}) {
    this.options = Object.assign({
      filePath: "robots.txt"
    }, options);
  }

  apply(compiler) {
    const plugin = {
      name: this.constructor.name
    };
    compiler.hooks.compilation.tap(plugin, compilation => {
      compilation.hooks.additionalAssets.tapPromise(plugin, () => (0, _generateRobotstxt.default)(this.options).then(contents => {
        const source = new compiler.webpack.sources.RawSource(contents);

        if (compilation.emitAsset) {
          compilation.emitAsset(this.options.filePath, source);
        } else {
          // Remove this after drop support for webpack@4
          compilation.assets[this.options.filePath] = source;
        }

        return contents;
      }).catch(error => {
        compilation.errors.push(error);
      }));
    });
  }

}

exports.default = RobotstxtPlugin;