elkjs/lib/main.js

Automatic graph layout based on Sugiyama's algorithm. Specialized for data flow diagrams and ports.

"use strict";

function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); }
/*******************************************************************************
 * Copyright (c) 2021 Kiel University and others.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 * 
 * SPDX-License-Identifier: EPL-2.0
 *******************************************************************************/
var ELK = require('./elk-api.js')["default"];
var ELKNode = /*#__PURE__*/function (_ELK) {
  function ELKNode() {
    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
    _classCallCheck(this, ELKNode);
    var optionsClone = Object.assign({}, options);
    var workerThreadsExist = false;
    try {
      require.resolve('web-worker');
      workerThreadsExist = true;
    } catch (e) {}

    // user requested a worker
    if (options.workerUrl) {
      if (workerThreadsExist) {
        var Worker = require('web-worker');
        optionsClone.workerFactory = function (url) {
          return new Worker(url);
        };
      } else {
        console.warn("Web worker requested but 'web-worker' package not installed. \nConsider installing the package or pass your own 'workerFactory' to ELK's constructor.\n... Falling back to non-web worker version.");
      }
    }

    // unless no other workerFactory is registered, use the fake worker
    if (!optionsClone.workerFactory) {
      var _require = require('./elk-worker.min.js'),
        _Worker = _require.Worker;
      optionsClone.workerFactory = function (url) {
        return new _Worker(url);
      };
    }
    return _callSuper(this, ELKNode, [optionsClone]);
  }
  _inherits(ELKNode, _ELK);
  return _createClass(ELKNode);
}(ELK);
Object.defineProperty(module.exports, "__esModule", {
  value: true
});
module.exports = ELKNode;
ELKNode["default"] = ELKNode;