(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.BaseBlockTracker = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
module.exports = require("regenerator-runtime");
},{"regenerator-runtime":7}],2:[function(require,module,exports){
const extend = require('xtend');
const createRandomId = require('json-rpc-random-id')();
module.exports = EthQuery;
function EthQuery(provider) {
const self = this;
self.currentProvider = provider;
} //
// base queries
//
// default block
EthQuery.prototype.getBalance = generateFnWithDefaultBlockFor(2, 'eth_getBalance');
EthQuery.prototype.getCode = generateFnWithDefaultBlockFor(2, 'eth_getCode');
EthQuery.prototype.getTransactionCount = generateFnWithDefaultBlockFor(2, 'eth_getTransactionCount');
EthQuery.prototype.getStorageAt = generateFnWithDefaultBlockFor(3, 'eth_getStorageAt');
EthQuery.prototype.call = generateFnWithDefaultBlockFor(2, 'eth_call'); // standard
EthQuery.prototype.protocolVersion = generateFnFor('eth_protocolVersion');
EthQuery.prototype.syncing = generateFnFor('eth_syncing');
EthQuery.prototype.coinbase = generateFnFor('eth_coinbase');
EthQuery.prototype.mining = generateFnFor('eth_mining');
EthQuery.prototype.hashrate = generateFnFor('eth_hashrate');
EthQuery.prototype.gasPrice = generateFnFor('eth_gasPrice');
EthQuery.prototype.accounts = generateFnFor('eth_accounts');
EthQuery.prototype.blockNumber = generateFnFor('eth_blockNumber');
EthQuery.prototype.getBlockTransactionCountByHash = generateFnFor('eth_getBlockTransactionCountByHash');
EthQuery.prototype.getBlockTransactionCountByNumber = generateFnFor('eth_getBlockTransactionCountByNumber');
EthQuery.prototype.getUncleCountByBlockHash = generateFnFor('eth_getUncleCountByBlockHash');
EthQuery.prototype.getUncleCountByBlockNumber = generateFnFor('eth_getUncleCountByBlockNumber');
EthQuery.prototype.sign = generateFnFor('eth_sign');
EthQuery.prototype.sendTransaction = generateFnFor('eth_sendTransaction');
EthQuery.prototype.sendRawTransaction = generateFnFor('eth_sendRawTransaction');
EthQuery.prototype.estimateGas = generateFnFor('eth_estimateGas');
EthQuery.prototype.getBlockByHash = generateFnFor('eth_getBlockByHash');
EthQuery.prototype.getBlockByNumber = generateFnFor('eth_getBlockByNumber');
EthQuery.prototype.getTransactionByHash = generateFnFor('eth_getTransactionByHash');
EthQuery.prototype.getTransactionByBlockHashAndIndex = generateFnFor('eth_getTransactionByBlockHashAndIndex');
EthQuery.prototype.getTransactionByBlockNumberAndIndex = generateFnFor('eth_getTransactionByBlockNumberAndIndex');
EthQuery.prototype.getTransactionReceipt = generateFnFor('eth_getTransactionReceipt');
EthQuery.prototype.getUncleByBlockHashAndIndex = generateFnFor('eth_getUncleByBlockHashAndIndex');
EthQuery.prototype.getUncleByBlockNumberAndIndex = generateFnFor('eth_getUncleByBlockNumberAndIndex');
EthQuery.prototype.getCompilers = generateFnFor('eth_getCompilers');
EthQuery.prototype.compileLLL = generateFnFor('eth_compileLLL');
EthQuery.prototype.compileSolidity = generateFnFor('eth_compileSolidity');
EthQuery.prototype.compileSerpent = generateFnFor('eth_compileSerpent');
EthQuery.prototype.newFilter = generateFnFor('eth_newFilter');
EthQuery.prototype.newBlockFilter = generateFnFor('eth_newBlockFilter');
EthQuery.prototype.newPendingTransactionFilter = generateFnFor('eth_newPendingTransactionFilter');
EthQuery.prototype.uninstallFilter = generateFnFor('eth_uninstallFilter');
EthQuery.prototype.getFilterChanges = generateFnFor('eth_getFilterChanges');
EthQuery.prototype.getFilterLogs = generateFnFor('eth_getFilterLogs');
EthQuery.prototype.getLogs = generateFnFor('eth_getLogs');
EthQuery.prototype.getWork = generateFnFor('eth_getWork');
EthQuery.prototype.submitWork = generateFnFor('eth_submitWork');
EthQuery.prototype.submitHashrate = generateFnFor('eth_submitHashrate'); // network level
EthQuery.prototype.sendAsync = function (opts, cb) {
const self = this;
self.currentProvider.sendAsync(createPayload(opts), function (err, response) {
if (!err && response.error) err = new Error('EthQuery - RPC Error - ' + response.error.message);
if (err) return cb(err);
cb(null, response.result);
});
}; // util
function generateFnFor(methodName) {
return function () {
const self = this;
var args = [].slice.call(arguments);
var cb = args.pop();
self.sendAsync({
method: methodName,
params: args
}, cb);
};
}
function generateFnWithDefaultBlockFor(argCount, methodName) {
return function () {
const self = this;
var args = [].slice.call(arguments);
var cb = args.pop(); // set optional default block param
if (args.length < argCount) args.push('latest');
self.sendAsync({
method: methodName,
params: args
}, cb);
};
}
function createPayload(data) {
return extend({
// defaults
id: createRandomId(),
jsonrpc: '2.0',
params: [] // user-specified
}, data);
}
},{"json-rpc-random-id":4,"xtend":12}],3:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
var R = typeof Reflect === 'object' ? Reflect : null;
var ReflectApply = R && typeof R.apply === 'function' ? R.apply : function ReflectApply(target, receiver, args) {
return Function.prototype.apply.call(target, receiver, args);
};
var ReflectOwnKeys;
if (R && typeof R.ownKeys === 'function') {
ReflectOwnKeys = R.ownKeys;
} else if (Object.getOwnPropertySymbols) {
ReflectOwnKeys = function ReflectOwnKeys(target) {
return Object.getOwnPropertyNames(target).concat(Object.getOwnPropertySymbols(target));
};
} else {
ReflectOwnKeys = function ReflectOwnKeys(target) {
return Object.getOwnPropertyNames(target);
};
}
function ProcessEmitWarning(warning) {
if (console && console.warn) console.warn(warning);
}
var NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {
return value !== value;
};
function EventEmitter() {
EventEmitter.init.call(this);
}
module.exports = EventEmitter; // Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._eventsCount = 0;
EventEmitter.prototype._maxListeners = undefined; // By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;
Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
enumerable: true,
get: function () {
return defaultMaxListeners;
},
set: function (arg) {
if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {
throw new RangeError('The value of "defaultMaxListeners" is out of range. It must be a non-negative number. Received ' + arg + '.');
}
defaultMaxListeners = arg;
}
});
EventEmitter.init = function () {
if (this._events === undefined || this._events === Object.getPrototypeOf(this)._events) {
this._events = Object.create(null);
this._eventsCount = 0;
}
this._maxListeners = this._maxListeners || undefined;
}; // Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {
throw new RangeError('The value of "n" is out of range. It must be a non-negative number. Received ' + n + '.');
}
this._maxListeners = n;
return this;
};
function $getMaxListeners(that) {
if (that._maxListeners === undefined) return EventEmitter.defaultMaxListeners;
return that._maxListeners;
}
EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
return $getMaxListeners(this);
};
EventEmitter.prototype.emit = function emit(type) {
var args = [];
for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);
var doError = type === 'error';
var events = this._events;
if (events !== undefined) doError = doError && events.error === undefined;else if (!doError) return false; // If there is no 'error' event listener then throw.
if (doError) {
var er;
if (args.length > 0) er = args[0];
if (er instanceof Error) {
// Note: The comments on the `throw` lines are intentional, they show
// up in Node's output if this results in an unhandled exception.
throw er; // Unhandled 'error' event
} // At least give some kind of context to the user
var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));
err.context = er;
throw err; // Unhandled 'error' event
}
var handler = events[type];
if (handler === undefined) return false;
if (typeof handler === 'function') {
ReflectApply(handler, this, args);
} else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i) ReflectApply(listeners[i], this, args);
}
return true;
};
function _addListener(target, type, listener, prepend) {
var m;
var events;
var existing;
if (typeof listener !== 'function') {
throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
}
events = target._events;
if (events === undefined) {
events = target._events = Object.create(null);
target._eventsCount = 0;
} else {
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (events.newListener !== undefined) {
target.emit('newListener', type, listener.listener ? listener.listener : listener); // Re-assign `events` because a newListener handler could have caused the
// this._events to be assigned to a new object
events = target._events;
}
existing = events[type];
}
if (existing === undefined) {
// Optimize the case of one listener. Don't need the extra array object.
existing = events[type] = listener;
++target._eventsCount;
} else {
if (typeof existing === 'function') {
// Adding the second element, need to change to array.
existing = events[type] = prepend ? [listener, existing] : [existing, listener]; // If we've already got an array, just append.
} else if (prepend) {
existing.unshift(listener);
} else {
existing.push(listener);
} // Check for listener leak
m = $getMaxListeners(target);
if (m > 0 && existing.length > m && !existing.warned) {
existing.warned = true; // No error code for this since it is a Warning
// eslint-disable-next-line no-restricted-syntax
var w = new Error('Possible EventEmitter memory leak detected. ' + existing.length + ' ' + String(type) + ' listeners ' + 'added. Use emitter.setMaxListeners() to ' + 'increase limit');
w.name = 'MaxListenersExceededWarning';
w.emitter = target;
w.type = type;
w.count = existing.length;
ProcessEmitWarning(w);
}
}
return target;
}
EventEmitter.prototype.addListener = function addListener(type, listener) {
return _addListener(this, type, listener, false);
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.prependListener = function prependListener(type, listener) {
return _addListener(this, type, listener, true);
};
function onceWrapper() {
var args = [];
for (var i = 0; i < arguments.length; i++) args.push(arguments[i]);
if (!this.fired) {
this.target.removeListener(this.type, this.wrapFn);
this.fired = true;
ReflectApply(this.listener, this.target, args);
}
}
function _onceWrap(target, type, listener) {
var state = {
fired: false,
wrapFn: undefined,
target: target,
type: type,
listener: listener
};
var wrapped = onceWrapper.bind(state);
wrapped.listener = listener;
state.wrapFn = wrapped;
return wrapped;
}
EventEmitter.prototype.once = function once(type, listener) {
if (typeof listener !== 'function') {
throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
}
this.on(type, _onceWrap(this, type, listener));
return this;
};
EventEmitter.prototype.prependOnceListener = function prependOnceListener(type, listener) {
if (typeof listener !== 'function') {
throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
}
this.prependListener(type, _onceWrap(this, type, listener));
return this;
}; // Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener = function removeListener(type, listener) {
var list, events, position, i, originalListener;
if (typeof listener !== 'function') {
throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
}
events = this._events;
if (events === undefined) return this;
list = events[type];
if (list === undefined) return this;
if (list === listener || list.listener === listener) {
if (--this._eventsCount === 0) this._events = Object.create(null);else {
delete events[type];
if (events.removeListener) this.emit('removeListener', type, list.listener || listener);
}
} else if (typeof list !== 'function') {
position = -1;
for (i = list.length - 1; i >= 0; i--) {
if (list[i] === listener || list[i].listener === listener) {
originalListener = list[i].listener;
position = i;
break;
}
}
if (position < 0) return this;
if (position === 0) list.shift();else {
spliceOne(list, position);
}
if (list.length === 1) events[type] = list[0];
if (events.removeListener !== undefined) this.emit('removeListener', type, originalListener || listener);
}
return this;
};
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
EventEmitter.prototype.removeAllListeners = function removeAllListeners(type) {
var listeners, events, i;
events = this._events;
if (events === undefined) return this; // not listening for removeListener, no need to emit
if (events.removeListener === undefined) {
if (arguments.length === 0) {
this._events = Object.create(null);
this._eventsCount = 0;
} else if (events[type] !== undefined) {
if (--this._eventsCount === 0) this._events = Object.create(null);else delete events[type];
}
return this;
} // emit removeListener for all listeners on all events
if (arguments.length === 0) {
var keys = Object.keys(events);
var key;
for (i = 0; i < keys.length; ++i) {
key = keys[i];
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = Object.create(null);
this._eventsCount = 0;
return this;
}
listeners = events[type];
if (typeof listeners === 'function') {
this.removeListener(type, listeners);
} else if (listeners !== undefined) {
// LIFO order
for (i = listeners.length - 1; i >= 0; i--) {
this.removeListener(type, listeners[i]);
}
}
return this;
};
function _listeners(target, type, unwrap) {
var events = target._events;
if (events === undefined) return [];
var evlistener = events[type];
if (evlistener === undefined) return [];
if (typeof evlistener === 'function') return unwrap ? [evlistener.listener || evlistener] : [evlistener];
return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}
EventEmitter.prototype.listeners = function listeners(type) {
return _listeners(this, type, true);
};
EventEmitter.prototype.rawListeners = function rawListeners(type) {
return _listeners(this, type, false);
};
EventEmitter.listenerCount = function (emitter, type) {
if (typeof emitter.listenerCount === 'function') {
return emitter.listenerCount(type);
} else {
return listenerCount.call(emitter, type);
}
};
EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
var events = this._events;
if (events !== undefined) {
var evlistener = events[type];
if (typeof evlistener === 'function') {
return 1;
} else if (evlistener !== undefined) {
return evlistener.length;
}
}
return 0;
}
EventEmitter.prototype.eventNames = function eventNames() {
return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];
};
function arrayClone(arr, n) {
var copy = new Array(n);
for (var i = 0; i < n; ++i) copy[i] = arr[i];
return copy;
}
function spliceOne(list, index) {
for (; index + 1 < list.length; index++) list[index] = list[index + 1];
list.pop();
}
function unwrapListeners(arr) {
var ret = new Array(arr.length);
for (var i = 0; i < ret.length; ++i) {
ret[i] = arr[i].listener || arr[i];
}
return ret;
}
},{}],4:[function(require,module,exports){
module.exports = IdIterator;
function IdIterator(opts) {
opts = opts || {};
var max = opts.max || Number.MAX_SAFE_INTEGER;
var idCounter = typeof opts.start !== 'undefined' ? opts.start : Math.floor(Math.random() * max);
return function createRandomId() {
idCounter = idCounter % max;
return idCounter++;
};
}
},{}],5:[function(require,module,exports){
'use strict';
const processFn = (fn, opts) => function () {
const P = opts.promiseModule;
const args = new Array(arguments.length);
for (let i = 0; i < arguments.length; i++) {
args[i] = arguments[i];
}
return new P((resolve, reject) => {
if (opts.errorFirst) {
args.push(function (err, result) {
if (opts.multiArgs) {
const results = new Array(arguments.length - 1);
for (let i = 1; i < arguments.length; i++) {
results[i - 1] = arguments[i];
}
if (err) {
results.unshift(err);
reject(results);
} else {
resolve(results);
}
} else if (err) {
reject(err);
} else {
resolve(result);
}
});
} else {
args.push(function (result) {
if (opts.multiArgs) {
const results = new Array(arguments.length - 1);
for (let i = 0; i < arguments.length; i++) {
results[i] = arguments[i];
}
resolve(results);
} else {
resolve(result);
}
});
}
fn.apply(this, args);
});
};
module.exports = (obj, opts) => {
opts = Object.assign({
exclude: [/.+(Sync|Stream)$/],
errorFirst: true,
promiseModule: Promise
}, opts);
const filter = key => {
const match = pattern => typeof pattern === 'string' ? key === pattern : pattern.test(key);
return opts.include ? opts.include.some(match) : !opts.exclude.some(match);
};
let ret;
if (typeof obj === 'function') {
ret = function () {
if (opts.excludeMain) {
return obj.apply(this, arguments);
}
return processFn(obj, opts).apply(this, arguments);
};
} else {
ret = Object.create(Object.getPrototypeOf(obj));
}
for (const key in obj) {
// eslint-disable-line guard-for-in
const x = obj[key];
ret[key] = typeof x === 'function' && filter(key) ? processFn(x, opts) : x;
}
return ret;
};
},{}],6:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {}; // cached from whatever global is present so that test runners that stub it
// don't break things. But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals. It's inside a
// function because try/catches deoptimize in certain engines.
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout() {
throw new Error('clearTimeout has not been defined');
}
(function () {
try {
if (typeof setTimeout === 'function') {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
})();
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
} // if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch (e) {
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch (e) {
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
} // if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e) {
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e) {
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while (len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function (fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
}; // v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function (name) {
return [];
};
process.binding = function (name) {
throw new Error('process.binding is not supported');
};
process.cwd = function () {
return '/';
};
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
process.umask = function () {
return 0;
};
},{}],7:[function(require,module,exports){
/**
* 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 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 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.
generator._invoke = 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 = {};
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 = Gp.constructor = GeneratorFunctionPrototype;
GeneratorFunctionPrototype.constructor = GeneratorFunction;
GeneratorFunctionPrototype[toStringTagSymbol] = GeneratorFunction.displayName = "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) {
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;
if (!(toStringTagSymbol in genFun)) {
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) {
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 Promise.resolve(value.__await).then(function (value) {
invoke("next", value, resolve, reject);
}, function (err) {
invoke("throw", err, resolve, reject);
});
}
return Promise.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 Promise(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).
this._invoke = enqueue;
}
defineIteratorMethods(AsyncIterator.prototype);
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) {
var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList));
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 25.3.3.3.3 of the spec:
// https://people.mozilla.org/~jorendorff/es6-draft.html#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 method = delegate.iterator[context.method];
if (method === undefined) {
// A .throw or .return when the delegate iterator has no .throw
// method always terminates the yield* loop.
context.delegate = null;
if (context.method === "throw") {
// Note: ["return"] must be used for ES3 parsing compatibility.
if (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;
}
}
context.method = "throw";
context.arg = new TypeError("The iterator does not provide a 'throw' 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);
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.
Gp[iteratorSymbol] = function () {
return this;
};
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 (object) {
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) {
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;
}
} // Return an iterator with no values.
return {
next: doneResult
};
}
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, 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.
Function("r", "regeneratorRuntime = r")(runtime);
}
},{}],8:[function(require,module,exports){
const util = require('util');
const EventEmitter = require('events/');
var R = typeof Reflect === 'object' ? Reflect : null;
var ReflectApply = R && typeof R.apply === 'function' ? R.apply : function ReflectApply(target, receiver, args) {
return Function.prototype.apply.call(target, receiver, args);
};
module.exports = SafeEventEmitter;
function SafeEventEmitter() {
EventEmitter.call(this);
}
util.inherits(SafeEventEmitter, EventEmitter);
SafeEventEmitter.prototype.emit = function (type) {
// copied from https://github.com/Gozala/events/blob/master/events.js
// modified lines are commented with "edited:"
var args = [];
for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);
var doError = type === 'error';
var events = this._events;
if (events !== undefined) doError = doError && events.error === undefined;else if (!doError) return false; // If there is no 'error' event listener then throw.
if (doError) {
var er;
if (args.length > 0) er = args[0];
if (er instanceof Error) {
// Note: The comments on the `throw` lines are intentional, they show
// up in Node's output if this results in an unhandled exception.
throw er; // Unhandled 'error' event
} // At least give some kind of context to the user
var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));
err.context = er;
throw err; // Unhandled 'error' event
}
var handler = events[type];
if (handler === undefined) return false;
if (typeof handler === 'function') {
// edited: using safeApply
safeApply(handler, this, args);
} else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i) // edited: using safeApply
safeApply(listeners[i], this, args);
}
return true;
};
function safeApply(handler, context, args) {
try {
ReflectApply(handler, context, args);
} catch (err) {
// throw error after timeout so as not to interupt the stack
setTimeout(() => {
throw err;
});
}
}
function arrayClone(arr, n) {
var copy = new Array(n);
for (var i = 0; i < n; ++i) copy[i] = arr[i];
return copy;
}
},{"events/":3,"util":11}],9:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor;
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor;
var TempCtor = function () {};
TempCtor.prototype = superCtor.prototype;
ctor.prototype = new TempCtor();
ctor.prototype.constructor = ctor;
};
}
},{}],10:[function(require,module,exports){
module.exports = function isBuffer(arg) {
return arg && typeof arg === 'object' && typeof arg.copy === 'function' && typeof arg.fill === 'function' && typeof arg.readUInt8 === 'function';
};
},{}],11:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var formatRegExp = /%[sdj%]/g;
exports.format = function (f) {
if (!isString(f)) {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function (x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s':
return String(args[i++]);
case '%d':
return Number(args[i++]);
case '%j':
try {
return JSON.stringify(args[i++]);
} catch (_) {
return '[Circular]';
}
default:
return x;
}
});
for (var x = args[i]; i < len; x = args[++i]) {
if (isNull(x) || !isObject(x)) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
}; // Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function (fn, msg) {
// Allow for deprecating things in the process of starting up.
if (isUndefined(global.process)) {
return function () {
return exports.deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (process.throwDeprecation) {
throw new Error(msg);
} else if (process.traceDeprecation) {
console.trace(msg);
} else {
console.error(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
};
var debugs = {};
var debugEnviron;
exports.debuglog = function (set) {
if (isUndefined(debugEnviron)) debugEnviron = process.env.NODE_DEBUG || '';
set = set.toUpperCase();
if (!debugs[set]) {
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
var pid = process.pid;
debugs[set] = function () {
var msg = exports.format.apply(exports, arguments);
console.error('%s %d: %s', set, pid, msg);
};
} else {
debugs[set] = function () {};
}
}
return debugs[set];
};
/**
* Echos the value of a value. Trys to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Object} opts Optional options object that alters the output.
*/
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
// default options
var ctx = {
seen: [],
stylize: stylizeNoColor
}; // legacy...
if (arguments.length >= 3) ctx.depth = arguments[2];
if (arguments.length >= 4) ctx.colors = arguments[3];
if (isBoolean(opts)) {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
} // set default options
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
if (isUndefined(ctx.depth)) ctx.depth = 2;
if (isUndefined(ctx.colors)) ctx.colors = false;
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
if (ctx.colors) ctx.stylize = stylizeWithColor;
return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect; // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
'bold': [1, 22],
'italic': [3, 23],
'underline': [4, 24],
'inverse': [7, 27],
'white': [37, 39],
'grey': [90, 39],
'black': [30, 39],
'blue': [34, 39],
'cyan': [36, 39],
'green': [32, 39],
'magenta': [35, 39],
'red': [31, 39],
'yellow': [33, 39]
}; // Don't use 'blue' not visible on cmd.exe
inspect.styles = {
'special': 'cyan',
'number': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red'
};
function stylizeWithColor(str, styleType) {
var style = inspect.styles[styleType];
if (style) {
return '\u001b[' + inspect.colors[style][0] + 'm' + str + '\u001b[' + inspect.colors[style][1] + 'm';
} else {
return str;
}
}
function stylizeNoColor(str, styleType) {
return str;
}
function arrayToHash(array) {
var hash = {};
array.forEach(function (val, idx) {
hash[val] = true;
});
return hash;
}
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (ctx.customInspect && value && isFunction(value.inspect) && // Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect && // Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (!isString(ret)) {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
} // Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
} // Look up the keys of the object.
var keys = Object.keys(value);
var visibleKeys = arrayToHash(keys);
if (ctx.showHidden) {
keys = Object.getOwnPropertyNames(value);
} // IE doesn't make error fields non-enumerable
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
if (isError(value) && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
return formatError(value);
} // Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (isFunction(value)) {
var name = value.name ? ': ' + value.name : '';
return ctx.stylize('[Function' + name + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = '',
array = false,
braces = ['{', '}']; // Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
} // Make functions say that they are functions
if (isFunction(value)) {
var n = value.name ? ': ' + value.name : '';
base = ' [Function' + n + ']';
} // Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
} // Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toUTCString.call(value);
} // Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else {
output = keys.map(function (key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
if (isUndefined(value)) return ctx.stylize('undefined', 'undefined');
if (isString(value)) {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '').replace(/'/g, "\\'").replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (isNumber(value)) return ctx.stylize('' + value, 'number');
if (isBoolean(value)) return ctx.stylize('' + value, 'boolean'); // For some reason typeof null is "object", so special case here.
if (isNull(value)) return ctx.stylize('null', 'null');
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, String(i), true));
} else {
output.push('');
}
}
keys.forEach(function (key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, key, true));
}
});
return output;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name, str, desc;
desc = Object.getOwnPropertyDescriptor(value, key) || {
value: value[key]
};
if (desc.get) {
if (desc.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (desc.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
if (!hasOwnProperty(visibleKeys, key)) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (isNull(recurseTimes)) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function (line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function (line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (isUndefined(name)) {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'").replace(/\\"/g, '"').replace(/(^"|"$)/g, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var numLinesEst = 0;
var length = output.reduce(function (prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] + (base === '' ? '' : base + '\n ') + ' ' + output.join(',\n ') + ' ' + braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
} // NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
return Array.isArray(ar);
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return isObject(e) && (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null || typeof arg === 'boolean' || typeof arg === 'number' || typeof arg === 'string' || typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('./support/isBuffer');
function objectToString(o) {
return Object.prototype.toString.call(o);
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']; // 26 Feb 16:19:34
function timestamp() {
var d = new Date();
var time = [pad(d.getHours()), pad(d.getMinutes()), pad(d.getSeconds())].join(':');
return [d.getDate(), months[d.getMonth()], time].join(' ');
} // log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function () {
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};
/**
* Inherit the prototype methods from one constructor into another.
*
* The Function.prototype.inherits from lang.js rewritten as a standalone
* function (not on Function.prototype). NOTE: If this file is to be loaded
* during bootstrapping this function needs to be rewritten using some native
* functions as prototype setup using normal JavaScript does not work as
* expected during bootstrapping (see mirror.js in r114903).
*
* @param {function} ctor Constructor function which needs to inherit the
* prototype.
* @param {function} superCtor Constructor function to inherit prototype from.
*/
exports.inherits = require('inherits');
exports._extend = function (origin, add) {
// Don't do anything if add isn't an object
if (!add || !isObject(add)) return origin;
var keys = Object.keys(add);
var i = keys.length;
while (i--) {
origin[keys[i]] = add[keys[i]];
}
return origin;
};
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":10,"_process":6,"inherits":9}],12:[function(require,module,exports){
module.exports = extend;
var hasOwnProperty = Object.prototype.hasOwnProperty;
function extend() {
var target = {};
for (var i = 0; i < arguments.length; i++) {
var source = arguments[i];
for (var key in source) {
if (hasOwnProperty.call(source, key)) {
target[key] = source[key];
}
}
}
return target;
}
},{}],13:[function(require,module,exports){
"use strict";
var _regenerator = _interopRequireDefault(require("@babel/runtime/regenerator"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a 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); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var EthQuery = require('eth-query');
var pify = require('pify');
var SafeEventEmitter = require('safe-event-emitter');
var sec = 1000;
var calculateSum = function calculateSum(accumulator, currentValue) {
return accumulator + currentValue;
};
var blockTrackerEvents = ['sync', 'latest'];
var BaseBlockTracker =
/*#__PURE__*/
function (_SafeEventEmitter) {
_inherits(BaseBlockTracker, _SafeEventEmitter);
//
// public
//
function BaseBlockTracker() {
var _this;
var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, BaseBlockTracker);
_this = _possibleConstructorReturn(this, _getPrototypeOf(BaseBlockTracker).call(this)); // config
_this._blockResetDuration = opts.blockResetDuration || 20 * sec; // state
_this._blockResetTimeout;
_this._currentBlock = null;
_this._isRunning = false; // bind functions for internal use
_this._onNewListener = _this._onNewListener.bind(_assertThisInitialized(_this));
_this._onRemoveListener = _this._onRemoveListener.bind(_assertThisInitialized(_this));
_this._resetCurrentBlock = _this._resetCurrentBlock.bind(_assertThisInitialized(_this)); // listen for handler changes
_this._setupInternalEvents();
return _this;
}
_createClass(BaseBlockTracker, [{
key: "isRunning",
value: function isRunning() {
return this._isRunning;
}
}, {
key: "getCurrentBlock",
value: function getCurrentBlock() {
return this._currentBlock;
}
}, {
key: "getLatestBlock",
value: function () {
var _getLatestBlock = _asyncToGenerator(
/*#__PURE__*/
_regenerator["default"].mark(function _callee() {
var _this2 = this;
var latestBlock;
return _regenerator["default"].wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
if (!this._currentBlock) {
_context.next = 2;
break;
}
return _context.abrupt("return", this._currentBlock);
case 2:
_context.next = 4;
return new Promise(function (resolve) {
return _this2.once('latest', resolve);
});
case 4:
latestBlock = _context.sent;
return _context.abrupt("return", latestBlock);
case 6:
case "end":
return _context.stop();
}
}
}, _callee, this);
}));
function getLatestBlock() {
return _getLatestBlock.apply(this, arguments);
}
return getLatestBlock;
}() // dont allow module consumer to remove our internal event listeners
}, {
key: "removeAllListeners",
value: function removeAllListeners(eventName) {
// perform default behavior, preserve fn arity
if (eventName) {
_get(_getPrototypeOf(BaseBlockTracker.prototype), "removeAllListeners", this).call(this, eventName);
} else {
_get(_getPrototypeOf(BaseBlockTracker.prototype), "removeAllListeners", this).call(this);
} // re-add internal events
this._setupInternalEvents(); // trigger stop check just in case
this._onRemoveListener();
} //
// to be implemented in subclass
//
}, {
key: "_start",
value: function _start() {// default behavior is noop
}
}, {
key: "_end",
value: function _end() {} // default behavior is noop
//
// private
//
}, {
key: "_setupInternalEvents",
value: function _setupInternalEvents() {
// first remove listeners for idempotence
this.removeListener('newListener', this._onNewListener);
this.removeListener('removeListener', this._onRemoveListener); // then add them
this.on('newListener', this._onNewListener);
this.on('removeListener', this._onRemoveListener);
}
}, {
key: "_onNewListener",
value: function _onNewListener(eventName, handler) {
// `newListener` is called *before* the listener is added
if (!blockTrackerEvents.includes(eventName)) return;
this._maybeStart();
}
}, {
key: "_onRemoveListener",
value: function _onRemoveListener(eventName, handler) {
// `removeListener` is called *after* the listener is removed
if (this._getBlockTrackerEventCount() > 0) return;
this._maybeEnd();
}
}, {
key: "_maybeStart",
value: function _maybeStart() {
if (this._isRunning) return;
this._isRunning = true; // cancel setting latest block to stale
this._cancelBlockResetTimeout();
this._start();
}
}, {
key: "_maybeEnd",
value: function _maybeEnd() {
if (!this._isRunning) return;
this._isRunning = false;
this._setupBlockResetTimeout();
this._end();
}
}, {
key: "_getBlockTrackerEventCount",
value: function _getBlockTrackerEventCount() {
var _this3 = this;
return blockTrackerEvents.map(function (eventName) {
return _this3.listenerCount(eventName);
}).reduce(calculateSum);
}
}, {
key: "_newPotentialLatest",
value: function _newPotentialLatest(newBlock) {
var currentBlock = this._currentBlock; // only update if blok number is higher
if (currentBlock && hexToInt(newBlock) <= hexToInt(currentBlock)) return;
this._setCurrentBlock(newBlock);
}
}, {
key: "_setCurrentBlock",
value: function _setCurrentBlock(newBlock) {
var oldBlock = this._currentBlock;
this._currentBlock = newBlock;
this.emit('latest', newBlock);
this.emit('sync', {
oldBlock: oldBlock,
newBlock: newBlock
});
}
}, {
key: "_setupBlockResetTimeout",
value: function _setupBlockResetTimeout() {
// clear any existing timeout
this._cancelBlockResetTimeout(); // clear latest block when stale
this._blockResetTimeout = setTimeout(this._resetCurrentBlock, this._blockResetDuration); // nodejs - dont hold process open
if (this._blockResetTimeout.unref) {
this._blockResetTimeout.unref();
}
}
}, {
key: "_cancelBlockResetTimeout",
value: function _cancelBlockResetTimeout() {
clearTimeout(this._blockResetTimeout);
}
}, {
key: "_resetCurrentBlock",
value: function _resetCurrentBlock() {
this._currentBlock = null;
}
}]);
return BaseBlockTracker;
}(SafeEventEmitter);
module.exports = BaseBlockTracker;
function hexToInt(hexInt) {
return Number.parseInt(hexInt, 16);
}
},{"@babel/runtime/regenerator":1,"eth-query":2,"pify":5,"safe-event-emitter":8}]},{},[13])(13)
});