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- /**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
- var runtime = (function (exports) {
- "use strict";
- var Op = Object.prototype;
- var hasOwn = Op.hasOwnProperty;
- var defineProperty = Object.defineProperty || function (obj, key, desc) { obj[key] = desc.value; };
- var undefined; // More compressible than void 0.
- var $Symbol = typeof Symbol === "function" ? Symbol : {};
- var iteratorSymbol = $Symbol.iterator || "@@iterator";
- var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
- var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
- function define(obj, key, value) {
- Object.defineProperty(obj, key, {
- value: value,
- enumerable: true,
- configurable: true,
- writable: true
- });
- return obj[key];
- }
- try {
- // IE 8 has a broken Object.defineProperty that only works on DOM objects.
- define({}, "");
- } catch (err) {
- define = function(obj, key, value) {
- return obj[key] = value;
- };
- }
- function wrap(innerFn, outerFn, self, tryLocsList) {
- // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
- var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
- var generator = Object.create(protoGenerator.prototype);
- var context = new Context(tryLocsList || []);
- // The ._invoke method unifies the implementations of the .next,
- // .throw, and .return methods.
- defineProperty(generator, "_invoke", { value: makeInvokeMethod(innerFn, self, context) });
- return generator;
- }
- exports.wrap = wrap;
- // Try/catch helper to minimize deoptimizations. Returns a completion
- // record like context.tryEntries[i].completion. This interface could
- // have been (and was previously) designed to take a closure to be
- // invoked without arguments, but in all the cases we care about we
- // already have an existing method we want to call, so there's no need
- // to create a new function object. We can even get away with assuming
- // the method takes exactly one argument, since that happens to be true
- // in every case, so we don't have to touch the arguments object. The
- // only additional allocation required is the completion record, which
- // has a stable shape and so hopefully should be cheap to allocate.
- function tryCatch(fn, obj, arg) {
- try {
- return { type: "normal", arg: fn.call(obj, arg) };
- } catch (err) {
- return { type: "throw", arg: err };
- }
- }
- var GenStateSuspendedStart = "suspendedStart";
- var GenStateSuspendedYield = "suspendedYield";
- var GenStateExecuting = "executing";
- var GenStateCompleted = "completed";
- // Returning this object from the innerFn has the same effect as
- // breaking out of the dispatch switch statement.
- var ContinueSentinel = {};
- // Dummy constructor functions that we use as the .constructor and
- // .constructor.prototype properties for functions that return Generator
- // objects. For full spec compliance, you may wish to configure your
- // minifier not to mangle the names of these two functions.
- function Generator() {}
- function GeneratorFunction() {}
- function GeneratorFunctionPrototype() {}
- // This is a polyfill for %IteratorPrototype% for environments that
- // don't natively support it.
- var IteratorPrototype = {};
- define(IteratorPrototype, iteratorSymbol, function () {
- return this;
- });
- var getProto = Object.getPrototypeOf;
- var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
- if (NativeIteratorPrototype &&
- NativeIteratorPrototype !== Op &&
- hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
- // This environment has a native %IteratorPrototype%; use it instead
- // of the polyfill.
- IteratorPrototype = NativeIteratorPrototype;
- }
- var Gp = GeneratorFunctionPrototype.prototype =
- Generator.prototype = Object.create(IteratorPrototype);
- GeneratorFunction.prototype = GeneratorFunctionPrototype;
- defineProperty(Gp, "constructor", { value: GeneratorFunctionPrototype, configurable: true });
- defineProperty(
- GeneratorFunctionPrototype,
- "constructor",
- { value: GeneratorFunction, configurable: true }
- );
- GeneratorFunction.displayName = define(
- GeneratorFunctionPrototype,
- toStringTagSymbol,
- "GeneratorFunction"
- );
- // Helper for defining the .next, .throw, and .return methods of the
- // Iterator interface in terms of a single ._invoke method.
- function defineIteratorMethods(prototype) {
- ["next", "throw", "return"].forEach(function(method) {
- define(prototype, method, function(arg) {
- return this._invoke(method, arg);
- });
- });
- }
- exports.isGeneratorFunction = function(genFun) {
- var ctor = typeof genFun === "function" && genFun.constructor;
- return ctor
- ? ctor === GeneratorFunction ||
- // For the native GeneratorFunction constructor, the best we can
- // do is to check its .name property.
- (ctor.displayName || ctor.name) === "GeneratorFunction"
- : false;
- };
- exports.mark = function(genFun) {
- if (Object.setPrototypeOf) {
- Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
- } else {
- genFun.__proto__ = GeneratorFunctionPrototype;
- define(genFun, toStringTagSymbol, "GeneratorFunction");
- }
- genFun.prototype = Object.create(Gp);
- return genFun;
- };
- // Within the body of any async function, `await x` is transformed to
- // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
- // `hasOwn.call(value, "__await")` to determine if the yielded value is
- // meant to be awaited.
- exports.awrap = function(arg) {
- return { __await: arg };
- };
- function AsyncIterator(generator, PromiseImpl) {
- function invoke(method, arg, resolve, reject) {
- var record = tryCatch(generator[method], generator, arg);
- if (record.type === "throw") {
- reject(record.arg);
- } else {
- var result = record.arg;
- var value = result.value;
- if (value &&
- typeof value === "object" &&
- hasOwn.call(value, "__await")) {
- return PromiseImpl.resolve(value.__await).then(function(value) {
- invoke("next", value, resolve, reject);
- }, function(err) {
- invoke("throw", err, resolve, reject);
- });
- }
- return PromiseImpl.resolve(value).then(function(unwrapped) {
- // When a yielded Promise is resolved, its final value becomes
- // the .value of the Promise<{value,done}> result for the
- // current iteration.
- result.value = unwrapped;
- resolve(result);
- }, function(error) {
- // If a rejected Promise was yielded, throw the rejection back
- // into the async generator function so it can be handled there.
- return invoke("throw", error, resolve, reject);
- });
- }
- }
- var previousPromise;
- function enqueue(method, arg) {
- function callInvokeWithMethodAndArg() {
- return new PromiseImpl(function(resolve, reject) {
- invoke(method, arg, resolve, reject);
- });
- }
- return previousPromise =
- // If enqueue has been called before, then we want to wait until
- // all previous Promises have been resolved before calling invoke,
- // so that results are always delivered in the correct order. If
- // enqueue has not been called before, then it is important to
- // call invoke immediately, without waiting on a callback to fire,
- // so that the async generator function has the opportunity to do
- // any necessary setup in a predictable way. This predictability
- // is why the Promise constructor synchronously invokes its
- // executor callback, and why async functions synchronously
- // execute code before the first await. Since we implement simple
- // async functions in terms of async generators, it is especially
- // important to get this right, even though it requires care.
- previousPromise ? previousPromise.then(
- callInvokeWithMethodAndArg,
- // Avoid propagating failures to Promises returned by later
- // invocations of the iterator.
- callInvokeWithMethodAndArg
- ) : callInvokeWithMethodAndArg();
- }
- // Define the unified helper method that is used to implement .next,
- // .throw, and .return (see defineIteratorMethods).
- defineProperty(this, "_invoke", { value: enqueue });
- }
- defineIteratorMethods(AsyncIterator.prototype);
- define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
- return this;
- });
- exports.AsyncIterator = AsyncIterator;
- // Note that simple async functions are implemented on top of
- // AsyncIterator objects; they just return a Promise for the value of
- // the final result produced by the iterator.
- exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
- if (PromiseImpl === void 0) PromiseImpl = Promise;
- var iter = new AsyncIterator(
- wrap(innerFn, outerFn, self, tryLocsList),
- PromiseImpl
- );
- return exports.isGeneratorFunction(outerFn)
- ? iter // If outerFn is a generator, return the full iterator.
- : iter.next().then(function(result) {
- return result.done ? result.value : iter.next();
- });
- };
- function makeInvokeMethod(innerFn, self, context) {
- var state = GenStateSuspendedStart;
- return function invoke(method, arg) {
- if (state === GenStateExecuting) {
- throw new Error("Generator is already running");
- }
- if (state === GenStateCompleted) {
- if (method === "throw") {
- throw arg;
- }
- // Be forgiving, per GeneratorResume behavior specified since ES2015:
- // ES2015 spec, step 3: https://262.ecma-international.org/6.0/#sec-generatorresume
- // Latest spec, step 2: https://tc39.es/ecma262/#sec-generatorresume
- return doneResult();
- }
- context.method = method;
- context.arg = arg;
- while (true) {
- var delegate = context.delegate;
- if (delegate) {
- var delegateResult = maybeInvokeDelegate(delegate, context);
- if (delegateResult) {
- if (delegateResult === ContinueSentinel) continue;
- return delegateResult;
- }
- }
- if (context.method === "next") {
- // Setting context._sent for legacy support of Babel's
- // function.sent implementation.
- context.sent = context._sent = context.arg;
- } else if (context.method === "throw") {
- if (state === GenStateSuspendedStart) {
- state = GenStateCompleted;
- throw context.arg;
- }
- context.dispatchException(context.arg);
- } else if (context.method === "return") {
- context.abrupt("return", context.arg);
- }
- state = GenStateExecuting;
- var record = tryCatch(innerFn, self, context);
- if (record.type === "normal") {
- // If an exception is thrown from innerFn, we leave state ===
- // GenStateExecuting and loop back for another invocation.
- state = context.done
- ? GenStateCompleted
- : GenStateSuspendedYield;
- if (record.arg === ContinueSentinel) {
- continue;
- }
- return {
- value: record.arg,
- done: context.done
- };
- } else if (record.type === "throw") {
- state = GenStateCompleted;
- // Dispatch the exception by looping back around to the
- // context.dispatchException(context.arg) call above.
- context.method = "throw";
- context.arg = record.arg;
- }
- }
- };
- }
- // Call delegate.iterator[context.method](context.arg) and handle the
- // result, either by returning a { value, done } result from the
- // delegate iterator, or by modifying context.method and context.arg,
- // setting context.delegate to null, and returning the ContinueSentinel.
- function maybeInvokeDelegate(delegate, context) {
- var methodName = context.method;
- var method = delegate.iterator[methodName];
- if (method === undefined) {
- // A .throw or .return when the delegate iterator has no .throw
- // method, or a missing .next method, always terminate the
- // yield* loop.
- context.delegate = null;
- // Note: ["return"] must be used for ES3 parsing compatibility.
- if (methodName === "throw" && delegate.iterator["return"]) {
- // If the delegate iterator has a return method, give it a
- // chance to clean up.
- context.method = "return";
- context.arg = undefined;
- maybeInvokeDelegate(delegate, context);
- if (context.method === "throw") {
- // If maybeInvokeDelegate(context) changed context.method from
- // "return" to "throw", let that override the TypeError below.
- return ContinueSentinel;
- }
- }
- if (methodName !== "return") {
- context.method = "throw";
- context.arg = new TypeError(
- "The iterator does not provide a '" + methodName + "' method");
- }
- return ContinueSentinel;
- }
- var record = tryCatch(method, delegate.iterator, context.arg);
- if (record.type === "throw") {
- context.method = "throw";
- context.arg = record.arg;
- context.delegate = null;
- return ContinueSentinel;
- }
- var info = record.arg;
- if (! info) {
- context.method = "throw";
- context.arg = new TypeError("iterator result is not an object");
- context.delegate = null;
- return ContinueSentinel;
- }
- if (info.done) {
- // Assign the result of the finished delegate to the temporary
- // variable specified by delegate.resultName (see delegateYield).
- context[delegate.resultName] = info.value;
- // Resume execution at the desired location (see delegateYield).
- context.next = delegate.nextLoc;
- // If context.method was "throw" but the delegate handled the
- // exception, let the outer generator proceed normally. If
- // context.method was "next", forget context.arg since it has been
- // "consumed" by the delegate iterator. If context.method was
- // "return", allow the original .return call to continue in the
- // outer generator.
- if (context.method !== "return") {
- context.method = "next";
- context.arg = undefined;
- }
- } else {
- // Re-yield the result returned by the delegate method.
- return info;
- }
- // The delegate iterator is finished, so forget it and continue with
- // the outer generator.
- context.delegate = null;
- return ContinueSentinel;
- }
- // Define Generator.prototype.{next,throw,return} in terms of the
- // unified ._invoke helper method.
- defineIteratorMethods(Gp);
- define(Gp, toStringTagSymbol, "Generator");
- // A Generator should always return itself as the iterator object when the
- // @@iterator function is called on it. Some browsers' implementations of the
- // iterator prototype chain incorrectly implement this, causing the Generator
- // object to not be returned from this call. This ensures that doesn't happen.
- // See https://github.com/facebook/regenerator/issues/274 for more details.
- define(Gp, iteratorSymbol, function() {
- return this;
- });
- define(Gp, "toString", function() {
- return "[object Generator]";
- });
- function pushTryEntry(locs) {
- var entry = { tryLoc: locs[0] };
- if (1 in locs) {
- entry.catchLoc = locs[1];
- }
- if (2 in locs) {
- entry.finallyLoc = locs[2];
- entry.afterLoc = locs[3];
- }
- this.tryEntries.push(entry);
- }
- function resetTryEntry(entry) {
- var record = entry.completion || {};
- record.type = "normal";
- delete record.arg;
- entry.completion = record;
- }
- function Context(tryLocsList) {
- // The root entry object (effectively a try statement without a catch
- // or a finally block) gives us a place to store values thrown from
- // locations where there is no enclosing try statement.
- this.tryEntries = [{ tryLoc: "root" }];
- tryLocsList.forEach(pushTryEntry, this);
- this.reset(true);
- }
- exports.keys = function(val) {
- var object = Object(val);
- var keys = [];
- for (var key in object) {
- keys.push(key);
- }
- keys.reverse();
- // Rather than returning an object with a next method, we keep
- // things simple and return the next function itself.
- return function next() {
- while (keys.length) {
- var key = keys.pop();
- if (key in object) {
- next.value = key;
- next.done = false;
- return next;
- }
- }
- // To avoid creating an additional object, we just hang the .value
- // and .done properties off the next function object itself. This
- // also ensures that the minifier will not anonymize the function.
- next.done = true;
- return next;
- };
- };
- function values(iterable) {
- if (iterable != null) {
- var iteratorMethod = iterable[iteratorSymbol];
- if (iteratorMethod) {
- return iteratorMethod.call(iterable);
- }
- if (typeof iterable.next === "function") {
- return iterable;
- }
- if (!isNaN(iterable.length)) {
- var i = -1, next = function next() {
- while (++i < iterable.length) {
- if (hasOwn.call(iterable, i)) {
- next.value = iterable[i];
- next.done = false;
- return next;
- }
- }
- next.value = undefined;
- next.done = true;
- return next;
- };
- return next.next = next;
- }
- }
- throw new TypeError(typeof iterable + " is not iterable");
- }
- exports.values = values;
- function doneResult() {
- return { value: undefined, done: true };
- }
- Context.prototype = {
- constructor: Context,
- reset: function(skipTempReset) {
- this.prev = 0;
- this.next = 0;
- // Resetting context._sent for legacy support of Babel's
- // function.sent implementation.
- this.sent = this._sent = undefined;
- this.done = false;
- this.delegate = null;
- this.method = "next";
- this.arg = undefined;
- this.tryEntries.forEach(resetTryEntry);
- if (!skipTempReset) {
- for (var name in this) {
- // Not sure about the optimal order of these conditions:
- if (name.charAt(0) === "t" &&
- hasOwn.call(this, name) &&
- !isNaN(+name.slice(1))) {
- this[name] = undefined;
- }
- }
- }
- },
- stop: function() {
- this.done = true;
- var rootEntry = this.tryEntries[0];
- var rootRecord = rootEntry.completion;
- if (rootRecord.type === "throw") {
- throw rootRecord.arg;
- }
- return this.rval;
- },
- dispatchException: function(exception) {
- if (this.done) {
- throw exception;
- }
- var context = this;
- function handle(loc, caught) {
- record.type = "throw";
- record.arg = exception;
- context.next = loc;
- if (caught) {
- // If the dispatched exception was caught by a catch block,
- // then let that catch block handle the exception normally.
- context.method = "next";
- context.arg = undefined;
- }
- return !! caught;
- }
- for (var i = this.tryEntries.length - 1; i >= 0; --i) {
- var entry = this.tryEntries[i];
- var record = entry.completion;
- if (entry.tryLoc === "root") {
- // Exception thrown outside of any try block that could handle
- // it, so set the completion value of the entire function to
- // throw the exception.
- return handle("end");
- }
- if (entry.tryLoc <= this.prev) {
- var hasCatch = hasOwn.call(entry, "catchLoc");
- var hasFinally = hasOwn.call(entry, "finallyLoc");
- if (hasCatch && hasFinally) {
- if (this.prev < entry.catchLoc) {
- return handle(entry.catchLoc, true);
- } else if (this.prev < entry.finallyLoc) {
- return handle(entry.finallyLoc);
- }
- } else if (hasCatch) {
- if (this.prev < entry.catchLoc) {
- return handle(entry.catchLoc, true);
- }
- } else if (hasFinally) {
- if (this.prev < entry.finallyLoc) {
- return handle(entry.finallyLoc);
- }
- } else {
- throw new Error("try statement without catch or finally");
- }
- }
- }
- },
- abrupt: function(type, arg) {
- for (var i = this.tryEntries.length - 1; i >= 0; --i) {
- var entry = this.tryEntries[i];
- if (entry.tryLoc <= this.prev &&
- hasOwn.call(entry, "finallyLoc") &&
- this.prev < entry.finallyLoc) {
- var finallyEntry = entry;
- break;
- }
- }
- if (finallyEntry &&
- (type === "break" ||
- type === "continue") &&
- finallyEntry.tryLoc <= arg &&
- arg <= finallyEntry.finallyLoc) {
- // Ignore the finally entry if control is not jumping to a
- // location outside the try/catch block.
- finallyEntry = null;
- }
- var record = finallyEntry ? finallyEntry.completion : {};
- record.type = type;
- record.arg = arg;
- if (finallyEntry) {
- this.method = "next";
- this.next = finallyEntry.finallyLoc;
- return ContinueSentinel;
- }
- return this.complete(record);
- },
- complete: function(record, afterLoc) {
- if (record.type === "throw") {
- throw record.arg;
- }
- if (record.type === "break" ||
- record.type === "continue") {
- this.next = record.arg;
- } else if (record.type === "return") {
- this.rval = this.arg = record.arg;
- this.method = "return";
- this.next = "end";
- } else if (record.type === "normal" && afterLoc) {
- this.next = afterLoc;
- }
- return ContinueSentinel;
- },
- finish: function(finallyLoc) {
- for (var i = this.tryEntries.length - 1; i >= 0; --i) {
- var entry = this.tryEntries[i];
- if (entry.finallyLoc === finallyLoc) {
- this.complete(entry.completion, entry.afterLoc);
- resetTryEntry(entry);
- return ContinueSentinel;
- }
- }
- },
- "catch": function(tryLoc) {
- for (var i = this.tryEntries.length - 1; i >= 0; --i) {
- var entry = this.tryEntries[i];
- if (entry.tryLoc === tryLoc) {
- var record = entry.completion;
- if (record.type === "throw") {
- var thrown = record.arg;
- resetTryEntry(entry);
- }
- return thrown;
- }
- }
- // The context.catch method must only be called with a location
- // argument that corresponds to a known catch block.
- throw new Error("illegal catch attempt");
- },
- delegateYield: function(iterable, resultName, nextLoc) {
- this.delegate = {
- iterator: values(iterable),
- resultName: resultName,
- nextLoc: nextLoc
- };
- if (this.method === "next") {
- // Deliberately forget the last sent value so that we don't
- // accidentally pass it on to the delegate.
- this.arg = undefined;
- }
- return ContinueSentinel;
- }
- };
- // Regardless of whether this script is executing as a CommonJS module
- // or not, return the runtime object so that we can declare the variable
- // regeneratorRuntime in the outer scope, which allows this module to be
- // injected easily by `bin/regenerator --include-runtime script.js`.
- return exports;
- }(
- // If this script is executing as a CommonJS module, use module.exports
- // as the regeneratorRuntime namespace. Otherwise create a new empty
- // object. Either way, the resulting object will be used to initialize
- // the regeneratorRuntime variable at the top of this file.
- typeof module === "object" ? module.exports : {}
- ));
- try {
- regeneratorRuntime = runtime;
- } catch (accidentalStrictMode) {
- // This module should not be running in strict mode, so the above
- // assignment should always work unless something is misconfigured. Just
- // in case runtime.js accidentally runs in strict mode, in modern engines
- // we can explicitly access globalThis. In older engines we can escape
- // strict mode using a global Function call. This could conceivably fail
- // if a Content Security Policy forbids using Function, but in that case
- // the proper solution is to fix the accidental strict mode problem. If
- // you've misconfigured your bundler to force strict mode and applied a
- // CSP to forbid Function, and you're not willing to fix either of those
- // problems, please detail your unique predicament in a GitHub issue.
- if (typeof globalThis === "object") {
- globalThis.regeneratorRuntime = runtime;
- } else {
- Function("r", "regeneratorRuntime = r")(runtime);
- }
- }
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