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   1  /**
   2   * Copyright (c) 2014-present, Facebook, Inc.
   3   *
   4   * This source code is licensed under the MIT license found in the
   5   * LICENSE file in the root directory of this source tree.
   6   */
   7  
   8  var runtime = (function (exports) {
   9    "use strict";
  10  
  11    var Op = Object.prototype;
  12    var hasOwn = Op.hasOwnProperty;
  13    var defineProperty = Object.defineProperty || function (obj, key, desc) { obj[key] = desc.value; };
  14    var undefined; // More compressible than void 0.
  15    var $Symbol = typeof Symbol === "function" ? Symbol : {};
  16    var iteratorSymbol = $Symbol.iterator || "@@iterator";
  17    var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
  18    var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
  19  
  20    function define(obj, key, value) {
  21      Object.defineProperty(obj, key, {
  22        value: value,
  23        enumerable: true,
  24        configurable: true,
  25        writable: true
  26      });
  27      return obj[key];
  28    }
  29    try {
  30      // IE 8 has a broken Object.defineProperty that only works on DOM objects.
  31      define({}, "");
  32    } catch (err) {
  33      define = function(obj, key, value) {
  34        return obj[key] = value;
  35      };
  36    }
  37  
  38    function wrap(innerFn, outerFn, self, tryLocsList) {
  39      // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
  40      var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
  41      var generator = Object.create(protoGenerator.prototype);
  42      var context = new Context(tryLocsList || []);
  43  
  44      // The ._invoke method unifies the implementations of the .next,
  45      // .throw, and .return methods.
  46      defineProperty(generator, "_invoke", { value: makeInvokeMethod(innerFn, self, context) });
  47  
  48      return generator;
  49    }
  50    exports.wrap = wrap;
  51  
  52    // Try/catch helper to minimize deoptimizations. Returns a completion
  53    // record like context.tryEntries[i].completion. This interface could
  54    // have been (and was previously) designed to take a closure to be
  55    // invoked without arguments, but in all the cases we care about we
  56    // already have an existing method we want to call, so there's no need
  57    // to create a new function object. We can even get away with assuming
  58    // the method takes exactly one argument, since that happens to be true
  59    // in every case, so we don't have to touch the arguments object. The
  60    // only additional allocation required is the completion record, which
  61    // has a stable shape and so hopefully should be cheap to allocate.
  62    function tryCatch(fn, obj, arg) {
  63      try {
  64        return { type: "normal", arg: fn.call(obj, arg) };
  65      } catch (err) {
  66        return { type: "throw", arg: err };
  67      }
  68    }
  69  
  70    var GenStateSuspendedStart = "suspendedStart";
  71    var GenStateSuspendedYield = "suspendedYield";
  72    var GenStateExecuting = "executing";
  73    var GenStateCompleted = "completed";
  74  
  75    // Returning this object from the innerFn has the same effect as
  76    // breaking out of the dispatch switch statement.
  77    var ContinueSentinel = {};
  78  
  79    // Dummy constructor functions that we use as the .constructor and
  80    // .constructor.prototype properties for functions that return Generator
  81    // objects. For full spec compliance, you may wish to configure your
  82    // minifier not to mangle the names of these two functions.
  83    function Generator() {}
  84    function GeneratorFunction() {}
  85    function GeneratorFunctionPrototype() {}
  86  
  87    // This is a polyfill for %IteratorPrototype% for environments that
  88    // don't natively support it.
  89    var IteratorPrototype = {};
  90    define(IteratorPrototype, iteratorSymbol, function () {
  91      return this;
  92    });
  93  
  94    var getProto = Object.getPrototypeOf;
  95    var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
  96    if (NativeIteratorPrototype &&
  97        NativeIteratorPrototype !== Op &&
  98        hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
  99      // This environment has a native %IteratorPrototype%; use it instead
 100      // of the polyfill.
 101      IteratorPrototype = NativeIteratorPrototype;
 102    }
 103  
 104    var Gp = GeneratorFunctionPrototype.prototype =
 105      Generator.prototype = Object.create(IteratorPrototype);
 106    GeneratorFunction.prototype = GeneratorFunctionPrototype;
 107    defineProperty(Gp, "constructor", { value: GeneratorFunctionPrototype, configurable: true });
 108    defineProperty(
 109      GeneratorFunctionPrototype,
 110      "constructor",
 111      { value: GeneratorFunction, configurable: true }
 112    );
 113    GeneratorFunction.displayName = define(
 114      GeneratorFunctionPrototype,
 115      toStringTagSymbol,
 116      "GeneratorFunction"
 117    );
 118  
 119    // Helper for defining the .next, .throw, and .return methods of the
 120    // Iterator interface in terms of a single ._invoke method.
 121    function defineIteratorMethods(prototype) {
 122      ["next", "throw", "return"].forEach(function(method) {
 123        define(prototype, method, function(arg) {
 124          return this._invoke(method, arg);
 125        });
 126      });
 127    }
 128  
 129    exports.isGeneratorFunction = function(genFun) {
 130      var ctor = typeof genFun === "function" && genFun.constructor;
 131      return ctor
 132        ? ctor === GeneratorFunction ||
 133          // For the native GeneratorFunction constructor, the best we can
 134          // do is to check its .name property.
 135          (ctor.displayName || ctor.name) === "GeneratorFunction"
 136        : false;
 137    };
 138  
 139    exports.mark = function(genFun) {
 140      if (Object.setPrototypeOf) {
 141        Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
 142      } else {
 143        genFun.__proto__ = GeneratorFunctionPrototype;
 144        define(genFun, toStringTagSymbol, "GeneratorFunction");
 145      }
 146      genFun.prototype = Object.create(Gp);
 147      return genFun;
 148    };
 149  
 150    // Within the body of any async function, `await x` is transformed to
 151    // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
 152    // `hasOwn.call(value, "__await")` to determine if the yielded value is
 153    // meant to be awaited.
 154    exports.awrap = function(arg) {
 155      return { __await: arg };
 156    };
 157  
 158    function AsyncIterator(generator, PromiseImpl) {
 159      function invoke(method, arg, resolve, reject) {
 160        var record = tryCatch(generator[method], generator, arg);
 161        if (record.type === "throw") {
 162          reject(record.arg);
 163        } else {
 164          var result = record.arg;
 165          var value = result.value;
 166          if (value &&
 167              typeof value === "object" &&
 168              hasOwn.call(value, "__await")) {
 169            return PromiseImpl.resolve(value.__await).then(function(value) {
 170              invoke("next", value, resolve, reject);
 171            }, function(err) {
 172              invoke("throw", err, resolve, reject);
 173            });
 174          }
 175  
 176          return PromiseImpl.resolve(value).then(function(unwrapped) {
 177            // When a yielded Promise is resolved, its final value becomes
 178            // the .value of the Promise<{value,done}> result for the
 179            // current iteration.
 180            result.value = unwrapped;
 181            resolve(result);
 182          }, function(error) {
 183            // If a rejected Promise was yielded, throw the rejection back
 184            // into the async generator function so it can be handled there.
 185            return invoke("throw", error, resolve, reject);
 186          });
 187        }
 188      }
 189  
 190      var previousPromise;
 191  
 192      function enqueue(method, arg) {
 193        function callInvokeWithMethodAndArg() {
 194          return new PromiseImpl(function(resolve, reject) {
 195            invoke(method, arg, resolve, reject);
 196          });
 197        }
 198  
 199        return previousPromise =
 200          // If enqueue has been called before, then we want to wait until
 201          // all previous Promises have been resolved before calling invoke,
 202          // so that results are always delivered in the correct order. If
 203          // enqueue has not been called before, then it is important to
 204          // call invoke immediately, without waiting on a callback to fire,
 205          // so that the async generator function has the opportunity to do
 206          // any necessary setup in a predictable way. This predictability
 207          // is why the Promise constructor synchronously invokes its
 208          // executor callback, and why async functions synchronously
 209          // execute code before the first await. Since we implement simple
 210          // async functions in terms of async generators, it is especially
 211          // important to get this right, even though it requires care.
 212          previousPromise ? previousPromise.then(
 213            callInvokeWithMethodAndArg,
 214            // Avoid propagating failures to Promises returned by later
 215            // invocations of the iterator.
 216            callInvokeWithMethodAndArg
 217          ) : callInvokeWithMethodAndArg();
 218      }
 219  
 220      // Define the unified helper method that is used to implement .next,
 221      // .throw, and .return (see defineIteratorMethods).
 222      defineProperty(this, "_invoke", { value: enqueue });
 223    }
 224  
 225    defineIteratorMethods(AsyncIterator.prototype);
 226    define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
 227      return this;
 228    });
 229    exports.AsyncIterator = AsyncIterator;
 230  
 231    // Note that simple async functions are implemented on top of
 232    // AsyncIterator objects; they just return a Promise for the value of
 233    // the final result produced by the iterator.
 234    exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
 235      if (PromiseImpl === void 0) PromiseImpl = Promise;
 236  
 237      var iter = new AsyncIterator(
 238        wrap(innerFn, outerFn, self, tryLocsList),
 239        PromiseImpl
 240      );
 241  
 242      return exports.isGeneratorFunction(outerFn)
 243        ? iter // If outerFn is a generator, return the full iterator.
 244        : iter.next().then(function(result) {
 245            return result.done ? result.value : iter.next();
 246          });
 247    };
 248  
 249    function makeInvokeMethod(innerFn, self, context) {
 250      var state = GenStateSuspendedStart;
 251  
 252      return function invoke(method, arg) {
 253        if (state === GenStateExecuting) {
 254          throw new Error("Generator is already running");
 255        }
 256  
 257        if (state === GenStateCompleted) {
 258          if (method === "throw") {
 259            throw arg;
 260          }
 261  
 262          // Be forgiving, per GeneratorResume behavior specified since ES2015:
 263          // ES2015 spec, step 3: https://262.ecma-international.org/6.0/#sec-generatorresume
 264          // Latest spec, step 2: https://tc39.es/ecma262/#sec-generatorresume
 265          return doneResult();
 266        }
 267  
 268        context.method = method;
 269        context.arg = arg;
 270  
 271        while (true) {
 272          var delegate = context.delegate;
 273          if (delegate) {
 274            var delegateResult = maybeInvokeDelegate(delegate, context);
 275            if (delegateResult) {
 276              if (delegateResult === ContinueSentinel) continue;
 277              return delegateResult;
 278            }
 279          }
 280  
 281          if (context.method === "next") {
 282            // Setting context._sent for legacy support of Babel's
 283            // function.sent implementation.
 284            context.sent = context._sent = context.arg;
 285  
 286          } else if (context.method === "throw") {
 287            if (state === GenStateSuspendedStart) {
 288              state = GenStateCompleted;
 289              throw context.arg;
 290            }
 291  
 292            context.dispatchException(context.arg);
 293  
 294          } else if (context.method === "return") {
 295            context.abrupt("return", context.arg);
 296          }
 297  
 298          state = GenStateExecuting;
 299  
 300          var record = tryCatch(innerFn, self, context);
 301          if (record.type === "normal") {
 302            // If an exception is thrown from innerFn, we leave state ===
 303            // GenStateExecuting and loop back for another invocation.
 304            state = context.done
 305              ? GenStateCompleted
 306              : GenStateSuspendedYield;
 307  
 308            if (record.arg === ContinueSentinel) {
 309              continue;
 310            }
 311  
 312            return {
 313              value: record.arg,
 314              done: context.done
 315            };
 316  
 317          } else if (record.type === "throw") {
 318            state = GenStateCompleted;
 319            // Dispatch the exception by looping back around to the
 320            // context.dispatchException(context.arg) call above.
 321            context.method = "throw";
 322            context.arg = record.arg;
 323          }
 324        }
 325      };
 326    }
 327  
 328    // Call delegate.iterator[context.method](context.arg) and handle the
 329    // result, either by returning a { value, done } result from the
 330    // delegate iterator, or by modifying context.method and context.arg,
 331    // setting context.delegate to null, and returning the ContinueSentinel.
 332    function maybeInvokeDelegate(delegate, context) {
 333      var methodName = context.method;
 334      var method = delegate.iterator[methodName];
 335      if (method === undefined) {
 336        // A .throw or .return when the delegate iterator has no .throw
 337        // method, or a missing .next method, always terminate the
 338        // yield* loop.
 339        context.delegate = null;
 340  
 341        // Note: ["return"] must be used for ES3 parsing compatibility.
 342        if (methodName === "throw" && delegate.iterator["return"]) {
 343          // If the delegate iterator has a return method, give it a
 344          // chance to clean up.
 345          context.method = "return";
 346          context.arg = undefined;
 347          maybeInvokeDelegate(delegate, context);
 348  
 349          if (context.method === "throw") {
 350            // If maybeInvokeDelegate(context) changed context.method from
 351            // "return" to "throw", let that override the TypeError below.
 352            return ContinueSentinel;
 353          }
 354        }
 355        if (methodName !== "return") {
 356          context.method = "throw";
 357          context.arg = new TypeError(
 358            "The iterator does not provide a '" + methodName + "' method");
 359        }
 360  
 361        return ContinueSentinel;
 362      }
 363  
 364      var record = tryCatch(method, delegate.iterator, context.arg);
 365  
 366      if (record.type === "throw") {
 367        context.method = "throw";
 368        context.arg = record.arg;
 369        context.delegate = null;
 370        return ContinueSentinel;
 371      }
 372  
 373      var info = record.arg;
 374  
 375      if (! info) {
 376        context.method = "throw";
 377        context.arg = new TypeError("iterator result is not an object");
 378        context.delegate = null;
 379        return ContinueSentinel;
 380      }
 381  
 382      if (info.done) {
 383        // Assign the result of the finished delegate to the temporary
 384        // variable specified by delegate.resultName (see delegateYield).
 385        context[delegate.resultName] = info.value;
 386  
 387        // Resume execution at the desired location (see delegateYield).
 388        context.next = delegate.nextLoc;
 389  
 390        // If context.method was "throw" but the delegate handled the
 391        // exception, let the outer generator proceed normally. If
 392        // context.method was "next", forget context.arg since it has been
 393        // "consumed" by the delegate iterator. If context.method was
 394        // "return", allow the original .return call to continue in the
 395        // outer generator.
 396        if (context.method !== "return") {
 397          context.method = "next";
 398          context.arg = undefined;
 399        }
 400  
 401      } else {
 402        // Re-yield the result returned by the delegate method.
 403        return info;
 404      }
 405  
 406      // The delegate iterator is finished, so forget it and continue with
 407      // the outer generator.
 408      context.delegate = null;
 409      return ContinueSentinel;
 410    }
 411  
 412    // Define Generator.prototype.{next,throw,return} in terms of the
 413    // unified ._invoke helper method.
 414    defineIteratorMethods(Gp);
 415  
 416    define(Gp, toStringTagSymbol, "Generator");
 417  
 418    // A Generator should always return itself as the iterator object when the
 419    // @@iterator function is called on it. Some browsers' implementations of the
 420    // iterator prototype chain incorrectly implement this, causing the Generator
 421    // object to not be returned from this call. This ensures that doesn't happen.
 422    // See https://github.com/facebook/regenerator/issues/274 for more details.
 423    define(Gp, iteratorSymbol, function() {
 424      return this;
 425    });
 426  
 427    define(Gp, "toString", function() {
 428      return "[object Generator]";
 429    });
 430  
 431    function pushTryEntry(locs) {
 432      var entry = { tryLoc: locs[0] };
 433  
 434      if (1 in locs) {
 435        entry.catchLoc = locs[1];
 436      }
 437  
 438      if (2 in locs) {
 439        entry.finallyLoc = locs[2];
 440        entry.afterLoc = locs[3];
 441      }
 442  
 443      this.tryEntries.push(entry);
 444    }
 445  
 446    function resetTryEntry(entry) {
 447      var record = entry.completion || {};
 448      record.type = "normal";
 449      delete record.arg;
 450      entry.completion = record;
 451    }
 452  
 453    function Context(tryLocsList) {
 454      // The root entry object (effectively a try statement without a catch
 455      // or a finally block) gives us a place to store values thrown from
 456      // locations where there is no enclosing try statement.
 457      this.tryEntries = [{ tryLoc: "root" }];
 458      tryLocsList.forEach(pushTryEntry, this);
 459      this.reset(true);
 460    }
 461  
 462    exports.keys = function(val) {
 463      var object = Object(val);
 464      var keys = [];
 465      for (var key in object) {
 466        keys.push(key);
 467      }
 468      keys.reverse();
 469  
 470      // Rather than returning an object with a next method, we keep
 471      // things simple and return the next function itself.
 472      return function next() {
 473        while (keys.length) {
 474          var key = keys.pop();
 475          if (key in object) {
 476            next.value = key;
 477            next.done = false;
 478            return next;
 479          }
 480        }
 481  
 482        // To avoid creating an additional object, we just hang the .value
 483        // and .done properties off the next function object itself. This
 484        // also ensures that the minifier will not anonymize the function.
 485        next.done = true;
 486        return next;
 487      };
 488    };
 489  
 490    function values(iterable) {
 491      if (iterable != null) {
 492        var iteratorMethod = iterable[iteratorSymbol];
 493        if (iteratorMethod) {
 494          return iteratorMethod.call(iterable);
 495        }
 496  
 497        if (typeof iterable.next === "function") {
 498          return iterable;
 499        }
 500  
 501        if (!isNaN(iterable.length)) {
 502          var i = -1, next = function next() {
 503            while (++i < iterable.length) {
 504              if (hasOwn.call(iterable, i)) {
 505                next.value = iterable[i];
 506                next.done = false;
 507                return next;
 508              }
 509            }
 510  
 511            next.value = undefined;
 512            next.done = true;
 513  
 514            return next;
 515          };
 516  
 517          return next.next = next;
 518        }
 519      }
 520  
 521      throw new TypeError(typeof iterable + " is not iterable");
 522    }
 523    exports.values = values;
 524  
 525    function doneResult() {
 526      return { value: undefined, done: true };
 527    }
 528  
 529    Context.prototype = {
 530      constructor: Context,
 531  
 532      reset: function(skipTempReset) {
 533        this.prev = 0;
 534        this.next = 0;
 535        // Resetting context._sent for legacy support of Babel's
 536        // function.sent implementation.
 537        this.sent = this._sent = undefined;
 538        this.done = false;
 539        this.delegate = null;
 540  
 541        this.method = "next";
 542        this.arg = undefined;
 543  
 544        this.tryEntries.forEach(resetTryEntry);
 545  
 546        if (!skipTempReset) {
 547          for (var name in this) {
 548            // Not sure about the optimal order of these conditions:
 549            if (name.charAt(0) === "t" &&
 550                hasOwn.call(this, name) &&
 551                !isNaN(+name.slice(1))) {
 552              this[name] = undefined;
 553            }
 554          }
 555        }
 556      },
 557  
 558      stop: function() {
 559        this.done = true;
 560  
 561        var rootEntry = this.tryEntries[0];
 562        var rootRecord = rootEntry.completion;
 563        if (rootRecord.type === "throw") {
 564          throw rootRecord.arg;
 565        }
 566  
 567        return this.rval;
 568      },
 569  
 570      dispatchException: function(exception) {
 571        if (this.done) {
 572          throw exception;
 573        }
 574  
 575        var context = this;
 576        function handle(loc, caught) {
 577          record.type = "throw";
 578          record.arg = exception;
 579          context.next = loc;
 580  
 581          if (caught) {
 582            // If the dispatched exception was caught by a catch block,
 583            // then let that catch block handle the exception normally.
 584            context.method = "next";
 585            context.arg = undefined;
 586          }
 587  
 588          return !! caught;
 589        }
 590  
 591        for (var i = this.tryEntries.length - 1; i >= 0; --i) {
 592          var entry = this.tryEntries[i];
 593          var record = entry.completion;
 594  
 595          if (entry.tryLoc === "root") {
 596            // Exception thrown outside of any try block that could handle
 597            // it, so set the completion value of the entire function to
 598            // throw the exception.
 599            return handle("end");
 600          }
 601  
 602          if (entry.tryLoc <= this.prev) {
 603            var hasCatch = hasOwn.call(entry, "catchLoc");
 604            var hasFinally = hasOwn.call(entry, "finallyLoc");
 605  
 606            if (hasCatch && hasFinally) {
 607              if (this.prev < entry.catchLoc) {
 608                return handle(entry.catchLoc, true);
 609              } else if (this.prev < entry.finallyLoc) {
 610                return handle(entry.finallyLoc);
 611              }
 612  
 613            } else if (hasCatch) {
 614              if (this.prev < entry.catchLoc) {
 615                return handle(entry.catchLoc, true);
 616              }
 617  
 618            } else if (hasFinally) {
 619              if (this.prev < entry.finallyLoc) {
 620                return handle(entry.finallyLoc);
 621              }
 622  
 623            } else {
 624              throw new Error("try statement without catch or finally");
 625            }
 626          }
 627        }
 628      },
 629  
 630      abrupt: function(type, arg) {
 631        for (var i = this.tryEntries.length - 1; i >= 0; --i) {
 632          var entry = this.tryEntries[i];
 633          if (entry.tryLoc <= this.prev &&
 634              hasOwn.call(entry, "finallyLoc") &&
 635              this.prev < entry.finallyLoc) {
 636            var finallyEntry = entry;
 637            break;
 638          }
 639        }
 640  
 641        if (finallyEntry &&
 642            (type === "break" ||
 643             type === "continue") &&
 644            finallyEntry.tryLoc <= arg &&
 645            arg <= finallyEntry.finallyLoc) {
 646          // Ignore the finally entry if control is not jumping to a
 647          // location outside the try/catch block.
 648          finallyEntry = null;
 649        }
 650  
 651        var record = finallyEntry ? finallyEntry.completion : {};
 652        record.type = type;
 653        record.arg = arg;
 654  
 655        if (finallyEntry) {
 656          this.method = "next";
 657          this.next = finallyEntry.finallyLoc;
 658          return ContinueSentinel;
 659        }
 660  
 661        return this.complete(record);
 662      },
 663  
 664      complete: function(record, afterLoc) {
 665        if (record.type === "throw") {
 666          throw record.arg;
 667        }
 668  
 669        if (record.type === "break" ||
 670            record.type === "continue") {
 671          this.next = record.arg;
 672        } else if (record.type === "return") {
 673          this.rval = this.arg = record.arg;
 674          this.method = "return";
 675          this.next = "end";
 676        } else if (record.type === "normal" && afterLoc) {
 677          this.next = afterLoc;
 678        }
 679  
 680        return ContinueSentinel;
 681      },
 682  
 683      finish: function(finallyLoc) {
 684        for (var i = this.tryEntries.length - 1; i >= 0; --i) {
 685          var entry = this.tryEntries[i];
 686          if (entry.finallyLoc === finallyLoc) {
 687            this.complete(entry.completion, entry.afterLoc);
 688            resetTryEntry(entry);
 689            return ContinueSentinel;
 690          }
 691        }
 692      },
 693  
 694      "catch": function(tryLoc) {
 695        for (var i = this.tryEntries.length - 1; i >= 0; --i) {
 696          var entry = this.tryEntries[i];
 697          if (entry.tryLoc === tryLoc) {
 698            var record = entry.completion;
 699            if (record.type === "throw") {
 700              var thrown = record.arg;
 701              resetTryEntry(entry);
 702            }
 703            return thrown;
 704          }
 705        }
 706  
 707        // The context.catch method must only be called with a location
 708        // argument that corresponds to a known catch block.
 709        throw new Error("illegal catch attempt");
 710      },
 711  
 712      delegateYield: function(iterable, resultName, nextLoc) {
 713        this.delegate = {
 714          iterator: values(iterable),
 715          resultName: resultName,
 716          nextLoc: nextLoc
 717        };
 718  
 719        if (this.method === "next") {
 720          // Deliberately forget the last sent value so that we don't
 721          // accidentally pass it on to the delegate.
 722          this.arg = undefined;
 723        }
 724  
 725        return ContinueSentinel;
 726      }
 727    };
 728  
 729    // Regardless of whether this script is executing as a CommonJS module
 730    // or not, return the runtime object so that we can declare the variable
 731    // regeneratorRuntime in the outer scope, which allows this module to be
 732    // injected easily by `bin/regenerator --include-runtime script.js`.
 733    return exports;
 734  
 735  }(
 736    // If this script is executing as a CommonJS module, use module.exports
 737    // as the regeneratorRuntime namespace. Otherwise create a new empty
 738    // object. Either way, the resulting object will be used to initialize
 739    // the regeneratorRuntime variable at the top of this file.
 740    typeof module === "object" ? module.exports : {}
 741  ));
 742  
 743  try {
 744    regeneratorRuntime = runtime;
 745  } catch (accidentalStrictMode) {
 746    // This module should not be running in strict mode, so the above
 747    // assignment should always work unless something is misconfigured. Just
 748    // in case runtime.js accidentally runs in strict mode, in modern engines
 749    // we can explicitly access globalThis. In older engines we can escape
 750    // strict mode using a global Function call. This could conceivably fail
 751    // if a Content Security Policy forbids using Function, but in that case
 752    // the proper solution is to fix the accidental strict mode problem. If
 753    // you've misconfigured your bundler to force strict mode and applied a
 754    // CSP to forbid Function, and you're not willing to fix either of those
 755    // problems, please detail your unique predicament in a GitHub issue.
 756    if (typeof globalThis === "object") {
 757      globalThis.regeneratorRuntime = runtime;
 758    } else {
 759      Function("r", "regeneratorRuntime = r")(runtime);
 760    }
 761  }