nextjs-ssr-import.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _path = require('path');

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

// This plugin modifies the require-ensure code generated by Webpack
// to work with Next.js SSR
var NextJsSsrImportPlugin = function () {
  function NextJsSsrImportPlugin(_ref) {
    var dir = _ref.dir,
        dist = _ref.dist;
    (0, _classCallCheck3.default)(this, NextJsSsrImportPlugin);

    this.dir = dir;
    this.dist = dist;
  }

  (0, _createClass3.default)(NextJsSsrImportPlugin, [{
    key: 'apply',
    value: function apply(compiler) {
      var _this = this;

      compiler.plugin('compilation', function (compilation) {
        compilation.mainTemplate.plugin('require-ensure', function (code) {
          // Update to load chunks from our custom chunks directory
          var chunksDirPath = (0, _path.join)(_this.dir, _this.dist, 'dist');
          // Make sure even in windows, the path looks like in unix
          // Node.js require system will convert it accordingly
          var chunksDirPathNormalized = chunksDirPath.replace(/\\/g, '/');
          var updatedCode = code.replace('require("./"', 'require("' + chunksDirPathNormalized + '/"');

          // Replace a promise equivalent which runs in the same loop
          // If we didn't do this webpack's module loading process block us from
          // doing SSR for chunks
          updatedCode = updatedCode.replace('return Promise.resolve();', 'return require(\'next/dynamic\').SameLoopPromise.resolve();');
          return updatedCode;
        });
      });
    }
  }]);
  return NextJsSsrImportPlugin;
}();

exports.default = NextJsSsrImportPlugin;