Updated the files.

my-app/node_modules/p-retry/index.d.ts

@@ -0,0 +1,106 @@
+import {OperationOptions} from 'retry';
+
+declare class AbortErrorClass extends Error {
+	readonly name: 'AbortError';
+	readonly originalError: Error;
+
+	/**
+	Abort retrying and reject the promise.
+
+	@param message - Error message or custom error.
+	*/
+	constructor(message: string | Error);
+}
+
+declare namespace pRetry {
+	interface FailedAttemptError extends Error {
+		readonly attemptNumber: number;
+		readonly retriesLeft: number;
+	}
+
+	interface Options extends OperationOptions {
+		/**
+		Callback invoked on each retry. Receives the error thrown by `input` as the first argument with properties `attemptNumber` and `retriesLeft` which indicate the current attempt number and the number of attempts left, respectively.
+
+		The `onFailedAttempt` function can return a promise. For example, to add a [delay](https://github.com/sindresorhus/delay):
+
+		```
+		import pRetry = require('p-retry');
+		import delay = require('delay');
+
+		const run = async () => { ... };
+
+		(async () => {
+			const result = await pRetry(run, {
+				onFailedAttempt: async error => {
+					console.log('Waiting for 1 second before retrying');
+					await delay(1000);
+				}
+			});
+		})();
+		```
+
+		If the `onFailedAttempt` function throws, all retries will be aborted and the original promise will reject with the thrown error.
+		*/
+		readonly onFailedAttempt?: (error: FailedAttemptError) => void | Promise<void>;
+	}
+
+	type AbortError = AbortErrorClass;
+}
+
+declare const pRetry: {
+	/**
+	Returns a `Promise` that is fulfilled when calling `input` returns a fulfilled promise. If calling `input` returns a rejected promise, `input` is called again until the max retries are reached, it then rejects with the last rejection reason.
+
+	Does not retry on most `TypeErrors`, with the exception of network errors. This is done on a best case basis as different browsers have different [messages](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch#Checking_that_the_fetch_was_successful) to indicate this. 
+	See [whatwg/fetch#526 (comment)](https://github.com/whatwg/fetch/issues/526#issuecomment-554604080)
+
+	@param input - Receives the number of attempts as the first argument and is expected to return a `Promise` or any value.
+	@param options - Options are passed to the [`retry`](https://github.com/tim-kos/node-retry#retryoperationoptions) module.
+
+	@example
+	```
+	import pRetry = require('p-retry');
+	import fetch from 'node-fetch';
+
+	const run = async () => {
+		const response = await fetch('https://sindresorhus.com/unicorn');
+
+		// Abort retrying if the resource doesn't exist
+		if (response.status === 404) {
+			throw new pRetry.AbortError(response.statusText);
+		}
+
+		return response.blob();
+	};
+
+	(async () => {
+		console.log(await pRetry(run, {retries: 5}));
+
+		// With the `onFailedAttempt` option:
+		const result = await pRetry(run, {
+			onFailedAttempt: error => {
+				console.log(`Attempt ${error.attemptNumber} failed. There are ${error.retriesLeft} retries left.`);
+				// 1st request => Attempt 1 failed. There are 4 retries left.
+				// 2nd request => Attempt 2 failed. There are 3 retries left.
+				// …
+			},
+			retries: 5
+		});
+
+		console.log(result);
+	})();
+	```
+	*/
+	<T>(
+		input: (attemptCount: number) => PromiseLike<T> | T,
+		options?: pRetry.Options
+	): Promise<T>;
+
+	AbortError: typeof AbortErrorClass;
+
+	// TODO: remove this in the next major version
+	default: typeof pRetry;
+};
+
+export = pRetry;

my-app/node_modules/p-retry/index.js

@@ -0,0 +1,85 @@
+'use strict';
+const retry = require('retry');
+
+const networkErrorMsgs = [
+	'Failed to fetch', // Chrome
+	'NetworkError when attempting to fetch resource.', // Firefox
+	'The Internet connection appears to be offline.', // Safari
+	'Network request failed' // `cross-fetch`
+];
+
+class AbortError extends Error {
+	constructor(message) {
+		super();
+
+		if (message instanceof Error) {
+			this.originalError = message;
+			({message} = message);
+		} else {
+			this.originalError = new Error(message);
+			this.originalError.stack = this.stack;
+		}
+
+		this.name = 'AbortError';
+		this.message = message;
+	}
+}
+
+const decorateErrorWithCounts = (error, attemptNumber, options) => {
+	// Minus 1 from attemptNumber because the first attempt does not count as a retry
+	const retriesLeft = options.retries - (attemptNumber - 1);
+
+	error.attemptNumber = attemptNumber;
+	error.retriesLeft = retriesLeft;
+	return error;
+};
+
+const isNetworkError = errorMessage => networkErrorMsgs.includes(errorMessage);
+
+const pRetry = (input, options) => new Promise((resolve, reject) => {
+	options = {
+		onFailedAttempt: () => {},
+		retries: 10,
+		...options
+	};
+
+	const operation = retry.operation(options);
+
+	operation.attempt(async attemptNumber => {
+		try {
+			resolve(await input(attemptNumber));
+		} catch (error) {
+			if (!(error instanceof Error)) {
+				reject(new TypeError(`Non-error was thrown: "${error}". You should only throw errors.`));
+				return;
+			}
+
+			if (error instanceof AbortError) {
+				operation.stop();
+				reject(error.originalError);
+			} else if (error instanceof TypeError && !isNetworkError(error.message)) {
+				operation.stop();
+				reject(error);
+			} else {
+				decorateErrorWithCounts(error, attemptNumber, options);
+
+				try {
+					await options.onFailedAttempt(error);
+				} catch (error) {
+					reject(error);
+					return;
+				}
+
+				if (!operation.retry(error)) {
+					reject(operation.mainError());
+				}
+			}
+		}
+	});
+});
+
+module.exports = pRetry;
+// TODO: remove this in the next major version
+module.exports.default = pRetry;
+
+module.exports.AbortError = AbortError;

my-app/node_modules/p-retry/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+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.

my-app/node_modules/p-retry/node_modules/retry/License

@@ -0,0 +1,21 @@
+Copyright (c) 2011:
+Tim Koschützki (tim@debuggable.com)
+Felix Geisendörfer (felix@debuggable.com)
+
+ 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.

my-app/node_modules/p-retry/node_modules/retry/README.md

@@ -0,0 +1,227 @@
+<!-- badges/ -->
+[![Build Status](https://secure.travis-ci.org/tim-kos/node-retry.svg?branch=master)](http://travis-ci.org/tim-kos/node-retry "Check this project's build status on TravisCI")
+[![codecov](https://codecov.io/gh/tim-kos/node-retry/branch/master/graph/badge.svg)](https://codecov.io/gh/tim-kos/node-retry)
+<!-- /badges -->
+
+# retry
+
+Abstraction for exponential and custom retry strategies for failed operations.
+
+## Installation
+
+    npm install retry
+
+## Current Status
+
+This module has been tested and is ready to be used.
+
+## Tutorial
+
+The example below will retry a potentially failing `dns.resolve` operation
+`10` times using an exponential backoff strategy. With the default settings, this
+means the last attempt is made after `17 minutes and 3 seconds`.
+
+``` javascript
+var dns = require('dns');
+var retry = require('retry');
+
+function faultTolerantResolve(address, cb) {
+  var operation = retry.operation();
+
+  operation.attempt(function(currentAttempt) {
+    dns.resolve(address, function(err, addresses) {
+      if (operation.retry(err)) {
+        return;
+      }
+
+      cb(err ? operation.mainError() : null, addresses);
+    });
+  });
+}
+
+faultTolerantResolve('nodejs.org', function(err, addresses) {
+  console.log(err, addresses);
+});
+```
+
+Of course you can also configure the factors that go into the exponential
+backoff. See the API documentation below for all available settings.
+currentAttempt is an int representing the number of attempts so far.
+
+``` javascript
+var operation = retry.operation({
+  retries: 5,
+  factor: 3,
+  minTimeout: 1 * 1000,
+  maxTimeout: 60 * 1000,
+  randomize: true,
+});
+```
+
+## API
+
+### retry.operation([options])
+
+Creates a new `RetryOperation` object. `options` is the same as `retry.timeouts()`'s `options`, with three additions:
+
+* `forever`: Whether to retry forever, defaults to `false`.
+* `unref`: Whether to [unref](https://nodejs.org/api/timers.html#timers_unref) the setTimeout's, defaults to `false`.
+* `maxRetryTime`: The maximum time (in milliseconds) that the retried operation is allowed to run. Default is `Infinity`.  
+
+### retry.timeouts([options])
+
+Returns an array of timeouts. All time `options` and return values are in
+milliseconds. If `options` is an array, a copy of that array is returned.
+
+`options` is a JS object that can contain any of the following keys:
+
+* `retries`: The maximum amount of times to retry the operation. Default is `10`. Seting this to `1` means `do it once, then retry it once`.
+* `factor`: The exponential factor to use. Default is `2`.
+* `minTimeout`: The number of milliseconds before starting the first retry. Default is `1000`.
+* `maxTimeout`: The maximum number of milliseconds between two retries. Default is `Infinity`.
+* `randomize`: Randomizes the timeouts by multiplying with a factor between `1` to `2`. Default is `false`.
+
+The formula used to calculate the individual timeouts is:
+
+```
+Math.min(random * minTimeout * Math.pow(factor, attempt), maxTimeout)
+```
+
+Have a look at [this article][article] for a better explanation of approach.
+
+If you want to tune your `factor` / `times` settings to attempt the last retry
+after a certain amount of time, you can use wolfram alpha. For example in order
+to tune for `10` attempts in `5 minutes`, you can use this equation:
+
+![screenshot](https://github.com/tim-kos/node-retry/raw/master/equation.gif)
+
+Explaining the various values from left to right:
+
+* `k = 0 ... 9`:  The `retries` value (10)
+* `1000`: The `minTimeout` value in ms (1000)
+* `x^k`: No need to change this, `x` will be your resulting factor
+* `5 * 60 * 1000`: The desired total amount of time for retrying in ms (5 minutes)
+
+To make this a little easier for you, use wolfram alpha to do the calculations:
+
+<http://www.wolframalpha.com/input/?i=Sum%5B1000*x^k%2C+{k%2C+0%2C+9}%5D+%3D+5+*+60+*+1000>
+
+[article]: http://dthain.blogspot.com/2009/02/exponential-backoff-in-distributed.html
+
+### retry.createTimeout(attempt, opts)
+
+Returns a new `timeout` (integer in milliseconds) based on the given parameters.
+
+`attempt` is an integer representing for which retry the timeout should be calculated. If your retry operation was executed 4 times you had one attempt and 3 retries. If you then want to calculate a new timeout, you should set `attempt` to 4 (attempts are zero-indexed).
+
+`opts` can include `factor`, `minTimeout`, `randomize` (boolean) and `maxTimeout`. They are documented above.
+
+`retry.createTimeout()` is used internally by `retry.timeouts()` and is public for you to be able to create your own timeouts for reinserting an item, see [issue #13](https://github.com/tim-kos/node-retry/issues/13).
+
+### retry.wrap(obj, [options], [methodNames])
+
+Wrap all functions of the `obj` with retry. Optionally you can pass operation options and
+an array of method names which need to be wrapped.
+
+```
+retry.wrap(obj)
+
+retry.wrap(obj, ['method1', 'method2'])
+
+retry.wrap(obj, {retries: 3})
+
+retry.wrap(obj, {retries: 3}, ['method1', 'method2'])
+```
+The `options` object can take any options that the usual call to `retry.operation` can take.
+
+### new RetryOperation(timeouts, [options])
+
+Creates a new `RetryOperation` where `timeouts` is an array where each value is
+a timeout given in milliseconds.
+
+Available options:
+* `forever`: Whether to retry forever, defaults to `false`.
+* `unref`: Wether to [unref](https://nodejs.org/api/timers.html#timers_unref) the setTimeout's, defaults to `false`.
+
+If `forever` is true, the following changes happen:
+* `RetryOperation.errors()` will only output an array of one item: the last error.
+* `RetryOperation` will repeatedly use the `timeouts` array. Once all of its timeouts have been used up, it restarts with the first timeout, then uses the second and so on.
+
+#### retryOperation.errors()
+
+Returns an array of all errors that have been passed to `retryOperation.retry()` so far. The
+returning array has the errors ordered chronologically based on when they were passed to
+`retryOperation.retry()`, which means the first passed error is at index zero and the last is
+at the last index.
+
+#### retryOperation.mainError()
+
+A reference to the error object that occured most frequently. Errors are
+compared using the `error.message` property.
+
+If multiple error messages occured the same amount of time, the last error
+object with that message is returned.
+
+If no errors occured so far, the value is `null`.
+
+#### retryOperation.attempt(fn, timeoutOps)
+
+Defines the function `fn` that is to be retried and executes it for the first
+time right away. The `fn` function can receive an optional `currentAttempt` callback that represents the number of attempts to execute `fn` so far.
+
+Optionally defines `timeoutOps` which is an object having a property `timeout` in miliseconds and a property `cb` callback function.
+Whenever your retry operation takes longer than `timeout` to execute, the timeout callback function `cb` is called.
+
+
+#### retryOperation.try(fn)
+
+This is an alias for `retryOperation.attempt(fn)`. This is deprecated. Please use `retryOperation.attempt(fn)` instead.
+
+#### retryOperation.start(fn)
+
+This is an alias for `retryOperation.attempt(fn)`. This is deprecated. Please use `retryOperation.attempt(fn)` instead.
+
+#### retryOperation.retry(error)
+
+Returns `false` when no `error` value is given, or the maximum amount of retries
+has been reached.
+
+Otherwise it returns `true`, and retries the operation after the timeout for
+the current attempt number.
+
+#### retryOperation.stop()
+
+Allows you to stop the operation being retried. Useful for aborting the operation on a fatal error etc.
+
+#### retryOperation.reset()
+
+Resets the internal state of the operation object, so that you can call `attempt()` again as if this was a new operation object.
+
+#### retryOperation.attempts()
+
+Returns an int representing the number of attempts it took to call `fn` before it was successful.
+
+## License
+
+retry is licensed under the MIT license.
+
+
+# Changelog
+
+0.10.0 Adding `stop` functionality, thanks to @maxnachlinger.
+
+0.9.0 Adding `unref` functionality, thanks to @satazor.
+
+0.8.0 Implementing retry.wrap.
+
+0.7.0 Some bug fixes and made retry.createTimeout() public. Fixed issues [#10](https://github.com/tim-kos/node-retry/issues/10), [#12](https://github.com/tim-kos/node-retry/issues/12), and [#13](https://github.com/tim-kos/node-retry/issues/13).
+
+0.6.0 Introduced optional timeOps parameter for the attempt() function which is an object having a property timeout in milliseconds and a property cb callback function. Whenever your retry operation takes longer than timeout to execute, the timeout callback function cb is called.
+
+0.5.0 Some minor refactoring.
+
+0.4.0 Changed retryOperation.try() to retryOperation.attempt(). Deprecated the aliases start() and try() for it.
+
+0.3.0 Added retryOperation.start() which is an alias for retryOperation.try().
+
+0.2.0 Added attempts() function and parameter to retryOperation.try() representing the number of attempts it took to call fn().

my-app/node_modules/p-retry/node_modules/retry/example/dns.js

@@ -0,0 +1,31 @@
+var dns = require('dns');
+var retry = require('../lib/retry');
+
+function faultTolerantResolve(address, cb) {
+  var opts = {
+    retries: 2,
+    factor: 2,
+    minTimeout: 1 * 1000,
+    maxTimeout: 2 * 1000,
+    randomize: true
+  };
+  var operation = retry.operation(opts);
+
+  operation.attempt(function(currentAttempt) {
+    dns.resolve(address, function(err, addresses) {
+      if (operation.retry(err)) {
+        return;
+      }
+
+      cb(operation.mainError(), operation.errors(), addresses);
+    });
+  });
+}
+
+faultTolerantResolve('nodejs.org', function(err, errors, addresses) {
+  console.warn('err:');
+  console.log(err);
+
+  console.warn('addresses:');
+  console.log(addresses);
+});

my-app/node_modules/p-retry/node_modules/retry/example/stop.js

@@ -0,0 +1,40 @@
+var retry = require('../lib/retry');
+
+function attemptAsyncOperation(someInput, cb) {
+  var opts = {
+    retries: 2,
+    factor: 2,
+    minTimeout: 1 * 1000,
+    maxTimeout: 2 * 1000,
+    randomize: true
+  };
+  var operation = retry.operation(opts);
+
+  operation.attempt(function(currentAttempt) {
+    failingAsyncOperation(someInput, function(err, result) {
+
+      if (err && err.message === 'A fatal error') {
+        operation.stop();
+        return cb(err);
+      }
+
+      if (operation.retry(err)) {
+        return;
+      }
+
+      cb(operation.mainError(), operation.errors(), result);
+    });
+  });
+}
+
+attemptAsyncOperation('test input', function(err, errors, result) {
+  console.warn('err:');
+  console.log(err);
+
+  console.warn('result:');
+  console.log(result);
+});
+
+function failingAsyncOperation(input, cb) {
+  return setImmediate(cb.bind(null, new Error('A fatal error')));
+}

my-app/node_modules/p-retry/node_modules/retry/index.js

@@ -0,0 +1 @@
+module.exports = require('./lib/retry');

my-app/node_modules/p-retry/node_modules/retry/lib/retry.js

@@ -0,0 +1,100 @@
+var RetryOperation = require('./retry_operation');
+
+exports.operation = function(options) {
+  var timeouts = exports.timeouts(options);
+  return new RetryOperation(timeouts, {
+      forever: options && (options.forever || options.retries === Infinity),
+      unref: options && options.unref,
+      maxRetryTime: options && options.maxRetryTime
+  });
+};
+
+exports.timeouts = function(options) {
+  if (options instanceof Array) {
+    return [].concat(options);
+  }
+
+  var opts = {
+    retries: 10,
+    factor: 2,
+    minTimeout: 1 * 1000,
+    maxTimeout: Infinity,
+    randomize: false
+  };
+  for (var key in options) {
+    opts[key] = options[key];
+  }
+
+  if (opts.minTimeout > opts.maxTimeout) {
+    throw new Error('minTimeout is greater than maxTimeout');
+  }
+
+  var timeouts = [];
+  for (var i = 0; i < opts.retries; i++) {
+    timeouts.push(this.createTimeout(i, opts));
+  }
+
+  if (options && options.forever && !timeouts.length) {
+    timeouts.push(this.createTimeout(i, opts));
+  }
+
+  // sort the array numerically ascending
+  timeouts.sort(function(a,b) {
+    return a - b;
+  });
+
+  return timeouts;
+};
+
+exports.createTimeout = function(attempt, opts) {
+  var random = (opts.randomize)
+    ? (Math.random() + 1)
+    : 1;
+
+  var timeout = Math.round(random * Math.max(opts.minTimeout, 1) * Math.pow(opts.factor, attempt));
+  timeout = Math.min(timeout, opts.maxTimeout);
+
+  return timeout;
+};
+
+exports.wrap = function(obj, options, methods) {
+  if (options instanceof Array) {
+    methods = options;
+    options = null;
+  }
+
+  if (!methods) {
+    methods = [];
+    for (var key in obj) {
+      if (typeof obj[key] === 'function') {
+        methods.push(key);
+      }
+    }
+  }
+
+  for (var i = 0; i < methods.length; i++) {
+    var method   = methods[i];
+    var original = obj[method];
+
+    obj[method] = function retryWrapper(original) {
+      var op       = exports.operation(options);
+      var args     = Array.prototype.slice.call(arguments, 1);
+      var callback = args.pop();
+
+      args.push(function(err) {
+        if (op.retry(err)) {
+          return;
+        }
+        if (err) {
+          arguments[0] = op.mainError();
+        }
+        callback.apply(this, arguments);
+      });
+
+      op.attempt(function() {
+        original.apply(obj, args);
+      });
+    }.bind(obj, original);
+    obj[method].options = options;
+  }
+};

my-app/node_modules/p-retry/node_modules/retry/lib/retry_operation.js

@@ -0,0 +1,162 @@
+function RetryOperation(timeouts, options) {
+  // Compatibility for the old (timeouts, retryForever) signature
+  if (typeof options === 'boolean') {
+    options = { forever: options };
+  }
+
+  this._originalTimeouts = JSON.parse(JSON.stringify(timeouts));
+  this._timeouts = timeouts;
+  this._options = options || {};
+  this._maxRetryTime = options && options.maxRetryTime || Infinity;
+  this._fn = null;
+  this._errors = [];
+  this._attempts = 1;
+  this._operationTimeout = null;
+  this._operationTimeoutCb = null;
+  this._timeout = null;
+  this._operationStart = null;
+  this._timer = null;
+
+  if (this._options.forever) {
+    this._cachedTimeouts = this._timeouts.slice(0);
+  }
+}
+module.exports = RetryOperation;
+
+RetryOperation.prototype.reset = function() {
+  this._attempts = 1;
+  this._timeouts = this._originalTimeouts.slice(0);
+}
+
+RetryOperation.prototype.stop = function() {
+  if (this._timeout) {
+    clearTimeout(this._timeout);
+  }
+  if (this._timer) {
+    clearTimeout(this._timer);
+  }
+
+  this._timeouts       = [];
+  this._cachedTimeouts = null;
+};
+
+RetryOperation.prototype.retry = function(err) {
+  if (this._timeout) {
+    clearTimeout(this._timeout);
+  }
+
+  if (!err) {
+    return false;
+  }
+  var currentTime = new Date().getTime();
+  if (err && currentTime - this._operationStart >= this._maxRetryTime) {
+    this._errors.push(err);
+    this._errors.unshift(new Error('RetryOperation timeout occurred'));
+    return false;
+  }
+
+  this._errors.push(err);
+
+  var timeout = this._timeouts.shift();
+  if (timeout === undefined) {
+    if (this._cachedTimeouts) {
+      // retry forever, only keep last error
+      this._errors.splice(0, this._errors.length - 1);
+      timeout = this._cachedTimeouts.slice(-1);
+    } else {
+      return false;
+    }
+  }
+
+  var self = this;
+  this._timer = setTimeout(function() {
+    self._attempts++;
+
+    if (self._operationTimeoutCb) {
+      self._timeout = setTimeout(function() {
+        self._operationTimeoutCb(self._attempts);
+      }, self._operationTimeout);
+
+      if (self._options.unref) {
+          self._timeout.unref();
+      }
+    }
+
+    self._fn(self._attempts);
+  }, timeout);
+
+  if (this._options.unref) {
+      this._timer.unref();
+  }
+
+  return true;
+};
+
+RetryOperation.prototype.attempt = function(fn, timeoutOps) {
+  this._fn = fn;
+
+  if (timeoutOps) {
+    if (timeoutOps.timeout) {
+      this._operationTimeout = timeoutOps.timeout;
+    }
+    if (timeoutOps.cb) {
+      this._operationTimeoutCb = timeoutOps.cb;
+    }
+  }
+
+  var self = this;
+  if (this._operationTimeoutCb) {
+    this._timeout = setTimeout(function() {
+      self._operationTimeoutCb();
+    }, self._operationTimeout);
+  }
+
+  this._operationStart = new Date().getTime();
+
+  this._fn(this._attempts);
+};
+
+RetryOperation.prototype.try = function(fn) {
+  console.log('Using RetryOperation.try() is deprecated');
+  this.attempt(fn);
+};
+
+RetryOperation.prototype.start = function(fn) {
+  console.log('Using RetryOperation.start() is deprecated');
+  this.attempt(fn);
+};
+
+RetryOperation.prototype.start = RetryOperation.prototype.try;
+
+RetryOperation.prototype.errors = function() {
+  return this._errors;
+};
+
+RetryOperation.prototype.attempts = function() {
+  return this._attempts;
+};
+
+RetryOperation.prototype.mainError = function() {
+  if (this._errors.length === 0) {
+    return null;
+  }
+
+  var counts = {};
+  var mainError = null;
+  var mainErrorCount = 0;
+
+  for (var i = 0; i < this._errors.length; i++) {
+    var error = this._errors[i];
+    var message = error.message;
+    var count = (counts[message] || 0) + 1;
+
+    counts[message] = count;
+
+    if (count >= mainErrorCount) {
+      mainError = error;
+      mainErrorCount = count;
+    }
+  }
+
+  return mainError;
+};

my-app/node_modules/p-retry/node_modules/retry/package.json

@@ -0,0 +1,36 @@
+{
+  "author": "Tim Koschützki <tim@debuggable.com> (http://debuggable.com/)",
+  "name": "retry",
+  "description": "Abstraction for exponential and custom retry strategies for failed operations.",
+  "license": "MIT",
+  "version": "0.13.1",
+  "homepage": "https://github.com/tim-kos/node-retry",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/tim-kos/node-retry.git"
+  },
+  "files": [
+    "lib",
+    "example"
+  ],
+  "directories": {
+    "lib": "./lib"
+  },
+  "main": "index.js",
+  "engines": {
+    "node": ">= 4"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "fake": "0.2.0",
+    "istanbul": "^0.4.5",
+    "tape": "^4.8.0"
+  },
+  "scripts": {
+    "test": "./node_modules/.bin/istanbul cover ./node_modules/tape/bin/tape ./test/integration/*.js",
+    "release:major": "env SEMANTIC=major npm run release",
+    "release:minor": "env SEMANTIC=minor npm run release",
+    "release:patch": "env SEMANTIC=patch npm run release",
+    "release": "npm version ${SEMANTIC:-patch} -m \"Release %s\" && git push && git push --tags && npm publish"
+  }
+}

my-app/node_modules/p-retry/package.json

@@ -0,0 +1,51 @@
+{
+	"name": "p-retry",
+	"version": "4.6.2",
+	"description": "Retry a promise-returning or async function",
+	"license": "MIT",
+	"repository": "sindresorhus/p-retry",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=8"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"promise",
+		"retry",
+		"retries",
+		"operation",
+		"failed",
+		"rejected",
+		"try",
+		"exponential",
+		"backoff",
+		"attempt",
+		"async",
+		"await",
+		"promises",
+		"concurrently",
+		"concurrency",
+		"parallel",
+		"bluebird"
+	],
+	"dependencies": {
+		"@types/retry": "0.12.0",
+		"retry": "^0.13.1"
+	},
+	"devDependencies": {
+		"ava": "^2.4.0",
+		"delay": "^4.1.0",
+		"tsd": "^0.10.0",
+		"xo": "^0.25.3"
+	}
+}

my-app/node_modules/p-retry/readme.md

@@ -0,0 +1,148 @@
+# p-retry
+
+> Retry a promise-returning or async function
+
+It does exponential backoff and supports custom retry strategies for failed operations.
+
+## Install
+
+```
+$ npm install p-retry
+```
+
+## Usage
+
+```js
+const pRetry = require('p-retry');
+const fetch = require('node-fetch');
+
+const run = async () => {
+	const response = await fetch('https://sindresorhus.com/unicorn');
+
+	// Abort retrying if the resource doesn't exist
+	if (response.status === 404) {
+		throw new pRetry.AbortError(response.statusText);
+	}
+
+	return response.blob();
+};
+
+(async () => {
+	console.log(await pRetry(run, {retries: 5}));
+})();
+```
+
+## API
+
+### pRetry(input, options?)
+
+Returns a `Promise` that is fulfilled when calling `input` returns a fulfilled promise. If calling `input` returns a rejected promise, `input` is called again until the maximum number of retries is reached. It then rejects with the last rejection reason.
+
+
+Does not retry on most `TypeErrors`, with the exception of network errors. This is done on a best case basis as different browsers have different [messages](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch#Checking_that_the_fetch_was_successful) to indicate this. See [whatwg/fetch#526 (comment)](https://github.com/whatwg/fetch/issues/526#issuecomment-554604080)
+
+
+#### input
+
+Type: `Function`
+
+Receives the current attempt number as the first argument and is expected to return a `Promise` or any value.
+
+#### options
+
+Type: `object`
+
+Options are passed to the [`retry`](https://github.com/tim-kos/node-retry#retryoperationoptions) module.
+
+##### onFailedAttempt(error)
+
+Type: `Function`
+
+Callback invoked on each retry. Receives the error thrown by `input` as the first argument with properties `attemptNumber` and `retriesLeft` which indicate the current attempt number and the number of attempts left, respectively.
+
+```js
+const run = async () => {
+	const response = await fetch('https://sindresorhus.com/unicorn');
+
+	if (!response.ok) {
+		throw new Error(response.statusText);
+	}
+
+	return response.json();
+};
+
+(async () => {
+	const result = await pRetry(run, {
+		onFailedAttempt: error => {
+			console.log(`Attempt ${error.attemptNumber} failed. There are ${error.retriesLeft} retries left.`);
+			// 1st request => Attempt 1 failed. There are 4 retries left.
+			// 2nd request => Attempt 2 failed. There are 3 retries left.
+			// …
+		},
+		retries: 5
+	});
+
+	console.log(result);
+})();
+```
+
+The `onFailedAttempt` function can return a promise. For example, you can do some async logging:
+
+```js
+const pRetry = require('p-retry');
+const logger = require('./some-logger');
+
+const run = async () => { … };
+
+(async () => {
+	const result = await pRetry(run, {
+		onFailedAttempt: async error => {
+			await logger.log(error);
+		}
+	});
+})();
+```
+
+If the `onFailedAttempt` function throws, all retries will be aborted and the original promise will reject with the thrown error.
+
+### pRetry.AbortError(message)
+### pRetry.AbortError(error)
+
+Abort retrying and reject the promise.
+
+### message
+
+Type: `string`
+
+Error message.
+
+### error
+
+Type: `Error`
+
+Custom error.
+
+## Tip
+
+You can pass arguments to the function being retried by wrapping it in an inline arrow function:
+
+```js
+const pRetry = require('p-retry');
+
+const run = async emoji => {
+	// …
+};
+
+(async () => {
+	// Without arguments
+	await pRetry(run, {retries: 5});
+
+	// With arguments
+	await pRetry(() => run('🦄'), {retries: 5});
+})();
+```
+
+## Related
+
+- [p-timeout](https://github.com/sindresorhus/p-timeout) - Timeout a promise after a specified amount of time
+- [More…](https://github.com/sindresorhus/promise-fun)