lodash-webpack-plugin/lib/index.js

'use strict';

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

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _lodash = require('lodash');

var _lodash2 = _interopRequireDefault(_lodash);

var _fs = require('fs');

var _fs2 = _interopRequireDefault(_fs);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

var _mapping = require('./mapping');

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

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var rePath = RegExp('/lodash(?:/(?!fp/)|-es/|-amd/)');
var reRequest = RegExp('^lodash(?:/|-es/|-amd/)\\w+$');

var stubs = ['./identity.js', './noop.js', './stubArray.js', './stubFalse.js', './stubObject.js', './stubString.js', './stubTrue.js'];

function getPatterns(options) {
  var result = [];
  _lodash2.default.forOwn(_mapping.features, function (pairs, key) {
    if (!options[key]) {
      _lodash2.default.each(pairs, function (pair) {
        result.push(['/' + pair[0] + '.js', './' + pair[1] + '.js']);
      });
    }
  });
  return result;
}

/*----------------------------------------------------------------------------*/

var LodashModuleReplacementPlugin = function () {
  function LodashModuleReplacementPlugin(options) {
    _classCallCheck(this, LodashModuleReplacementPlugin);

    this.matches = [];
    this.options = options || {};
    this.patterns = getPatterns(this.options);
  }

  _createClass(LodashModuleReplacementPlugin, [{
    key: 'apply',
    value: function apply(compiler) {
      var _this = this;

      var resolvePath = _lodash2.default.memoize(function (data) {
        var rawRequest = data.rawRequest;
        var resource = data.resource;

        var result = resource;
        if (!rePath.test(resource)) {
          return result;
        }
        _lodash2.default.each(_this.patterns, function (pair) {
          // Replace the resource, if it ends with the first pattern of the pair,
          // as long as it isn't an explicit request for a stubbed module.
          if (!_lodash2.default.endsWith(resource, pair[0]) || reRequest.test(rawRequest) && _lodash2.default.includes(stubs, pair[1])) {
            return;
          }
          var modulePath = _path2.default.resolve(_path2.default.dirname(resource), pair[1]);
          if (_fs2.default.existsSync(modulePath)) {
            result = modulePath;
            _this.matches.push([resource, result]);
            return false;
          }
        });
        return result;
      }, function (data) {
        return data.resource;
      });

      compiler.plugin('normal-module-factory', function (nmf) {
        nmf.plugin('before-resolve', function (data, callback) {
          if (!data) {
            return callback();
          }
          var request = data.request;

          if (reRequest.test(request)) {
            var override = _mapping.overrides[_path2.default.basename(request, '.js')];
            if (!_lodash2.default.isMatch(_this.options, override)) {
              _this.patterns = getPatterns(_lodash2.default.assign(_this.options, override));
            }
          }
          return callback(null, data);
        });

        nmf.plugin('after-resolve', function (data, callback) {
          if (!data) {
            return callback();
          }
          data.resource = resolvePath(data);
          return callback(null, data);
        });
      });
    }
  }]);

  return LodashModuleReplacementPlugin;
}();

exports.default = LodashModuleReplacementPlugin;
;
module.exports = exports['default'];