@bombearn/sdk/dist/sdk.cjs.development.js

Interaction framework for the yearn protocol

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

require('cross-fetch/polyfill');
var providers = require('@ethersproject/providers');
var EventEmitter = _interopDefault(require('events'));
var BigNumber = require('bignumber.js');
var BigNumber__default = _interopDefault(BigNumber);
var address = require('@ethersproject/address');
var contracts = require('@ethersproject/contracts');
var Emittery = _interopDefault(require('emittery'));
var abi = require('@ethersproject/abi');
var constants = require('@ethersproject/constants');
var bignumber = require('@ethersproject/bignumber');
var fetch$1 = _interopDefault(require('cross-fetch'));
var bignumber$1 = require('@ethersproject/bignumber/lib/bignumber');
var cowSdk = require('@cowprotocol/cow-sdk');

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
  try {
    var info = gen[key](arg);
    var value = info.value;
  } catch (error) {
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    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) {
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      }

      _next(undefined);
    });
  };
}

function _defineProperties(target, props) {
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    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);
  Object.defineProperty(Constructor, "prototype", {
    writable: false
  });
  return Constructor;
}

function _extends() {
  _extends = Object.assign || function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];

      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }

    return target;
  };

  return _extends.apply(this, arguments);
}

function _inheritsLoose(subClass, superClass) {
  subClass.prototype = Object.create(superClass.prototype);
  subClass.prototype.constructor = subClass;

  _setPrototypeOf(subClass, superClass);
}

function _getPrototypeOf(o) {
  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
    return o.__proto__ || Object.getPrototypeOf(o);
  };
  return _getPrototypeOf(o);
}

function _setPrototypeOf(o, p) {
  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
    o.__proto__ = p;
    return o;
  };

  return _setPrototypeOf(o, p);
}

function _isNativeReflectConstruct() {
  if (typeof Reflect === "undefined" || !Reflect.construct) return false;
  if (Reflect.construct.sham) return false;
  if (typeof Proxy === "function") return true;

  try {
    Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
    return true;
  } catch (e) {
    return false;
  }
}

function _construct(Parent, args, Class) {
  if (_isNativeReflectConstruct()) {
    _construct = Reflect.construct;
  } else {
    _construct = function _construct(Parent, args, Class) {
      var a = [null];
      a.push.apply(a, args);
      var Constructor = Function.bind.apply(Parent, a);
      var instance = new Constructor();
      if (Class) _setPrototypeOf(instance, Class.prototype);
      return instance;
    };
  }

  return _construct.apply(null, arguments);
}

function _isNativeFunction(fn) {
  return Function.toString.call(fn).indexOf("[native code]") !== -1;
}

function _wrapNativeSuper(Class) {
  var _cache = typeof Map === "function" ? new Map() : undefined;

  _wrapNativeSuper = function _wrapNativeSuper(Class) {
    if (Class === null || !_isNativeFunction(Class)) return Class;

    if (typeof Class !== "function") {
      throw new TypeError("Super expression must either be null or a function");
    }

    if (typeof _cache !== "undefined") {
      if (_cache.has(Class)) return _cache.get(Class);

      _cache.set(Class, Wrapper);
    }

    function Wrapper() {
      return _construct(Class, arguments, _getPrototypeOf(this).constructor);
    }

    Wrapper.prototype = Object.create(Class.prototype, {
      constructor: {
        value: Wrapper,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
    return _setPrototypeOf(Wrapper, Class);
  };

  return _wrapNativeSuper(Class);
}

function _unsupportedIterableToArray(o, minLen) {
  if (!o) return;
  if (typeof o === "string") return _arrayLikeToArray(o, minLen);
  var n = Object.prototype.toString.call(o).slice(8, -1);
  if (n === "Object" && o.constructor) n = o.constructor.name;
  if (n === "Map" || n === "Set") return Array.from(o);
  if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}

function _arrayLikeToArray(arr, len) {
  if (len == null || len > arr.length) len = arr.length;

  for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];

  return arr2;
}

function _createForOfIteratorHelperLoose(o, allowArrayLike) {
  var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
  if (it) return (it = it.call(o)).next.bind(it);

  if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
    if (it) o = it;
    var i = 0;
    return function () {
      if (i >= o.length) return {
        done: true
      };
      return {
        done: false,
        value: o[i++]
      };
    };
  }

  throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

var CustomError = /*#__PURE__*/function (_Error) {
  _inheritsLoose(CustomError, _Error);

  function CustomError(message, error_type) {
    var _this;

    _this = _Error.call(this, message) || this;
    _this.error_type = error_type;
    return _this;
  }

  return CustomError;
}( /*#__PURE__*/_wrapNativeSuper(Error));
/**
 * Generic SDK error. Wrapped errors are:
 *
 * - ethers.js errors
 * - http request errors
 */

var SdkError = /*#__PURE__*/function (_CustomError) {
  _inheritsLoose(SdkError, _CustomError);

  function SdkError(message, error_code) {
    var _this2;

    _this2 = _CustomError.call(this, message, "sdk") || this;
    _this2.error_code = error_code;
    return _this2;
  }

  return SdkError;
}(CustomError);
SdkError.NO_SLIPPAGE = "no_slippage";

var SimulationError = /*#__PURE__*/function (_CustomError) {
  _inheritsLoose(SimulationError, _CustomError);

  function SimulationError(message, error_code) {
    var _this;

    _this = _CustomError.call(this, message, "simulation") || this;
    _this.error_code = error_code;
    return _this;
  }

  return SimulationError;
}(CustomError);
SimulationError.NO_LOG = "no_log";
SimulationError.TENDERLY_RESPONSE_ERROR = "tenderly_response_error";
SimulationError.PARTIAL_REVERT = "partial_revert";
SimulationError.INVALID_TYPE = "invalid_type";
var ZapError = /*#__PURE__*/function (_CustomError2) {
  _inheritsLoose(ZapError, _CustomError2);

  function ZapError(message, error_code) {
    var _this2;

    _this2 = _CustomError2.call(this, message, "zap") || this;
    _this2.error_code = error_code;
    return _this2;
  }

  return ZapError;
}(CustomError);
ZapError.ZAP_IN_APPROVAL_STATE = "zap_in_approval_state";
ZapError.ZAP_IN_APPROVAL = "zap_in_approval";
ZapError.ZAP_OUT_APPROVAL_STATE = "zap_out_approval_state";
ZapError.ZAP_OUT_APPROVAL = "zap_out_approval";
ZapError.ZAP_IN = "zap_in";
ZapError.ZAP_OUT = "zap_out";
var EthersError = /*#__PURE__*/function (_CustomError3) {
  _inheritsLoose(EthersError, _CustomError3);

  function EthersError(message, error_code) {
    var _this3;

    _this3 = _CustomError3.call(this, message, "ethers") || this;
    _this3.error_code = error_code;
    return _this3;
  }

  return EthersError;
}(CustomError);
EthersError.FAIL_TOKEN_FETCH = "fail_token_fetch";
EthersError.NO_DECIMALS = "no_decimals";
EthersError.NO_PRICE_PER_SHARE = "no_price_per_share";
EthersError.POPULATING_TRANSACTION = "populating_transaction";
var TenderlyError = /*#__PURE__*/function (_CustomError4) {
  _inheritsLoose(TenderlyError, _CustomError4);

  function TenderlyError(message, error_code) {
    var _this4;

    _this4 = _CustomError4.call(this, message, "tenderly") || this;
    _this4.error_code = error_code;
    return _this4;
  }

  return TenderlyError;
}(CustomError);
TenderlyError.SIMULATION_CALL = "simulation_call";
TenderlyError.CREATE_FORK = "create_fork";
var PriceFetchingError = /*#__PURE__*/function (_CustomError5) {
  _inheritsLoose(PriceFetchingError, _CustomError5);

  function PriceFetchingError(message, error_code) {
    var _this5;

    _this5 = _CustomError5.call(this, message, "price_fetching") || this;
    _this5.error_code = error_code;
    return _this5;
  }

  return PriceFetchingError;
}(CustomError);
PriceFetchingError.FETCHING_PRICE_ORACLE = "fetching_price_oracle";
PriceFetchingError.FETCHING_PRICE_PICKLE = "fetching_price_pickle";

(function (ZapProtocol) {
  ZapProtocol["PICKLE"] = "pickle";
  ZapProtocol["YEARN"] = "yearn";
})(exports.ZapProtocol || (exports.ZapProtocol = {}));

function encode(_ref) {
  var str = _ref.str,
      encoding = _ref.encoding;
  return Buffer.from(str, "binary").toString(encoding);
}

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var runtime_1 = createCommonjsModule(function (module) {
/**
 * 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) {

  var Op = Object.prototype;
  var hasOwn = Op.hasOwnProperty;
  var undefined$1; // More compressible than void 0.
  var $Symbol = typeof Symbol === "function" ? Symbol : {};
  var iteratorSymbol = $Symbol.iterator || "@@iterator";
  var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
  var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";

  function define(obj, key, value) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
    return obj[key];
  }
  try {
    // IE 8 has a broken Object.defineProperty that only works on DOM objects.
    define({}, "");
  } catch (err) {
    define = function(obj, key, value) {
      return obj[key] = value;
    };
  }

  function wrap(innerFn, outerFn, self, tryLocsList) {
    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
    var generator = Object.create(protoGenerator.prototype);
    var context = new Context(tryLocsList || []);

    // The ._invoke method unifies the implementations of the .next,
    // .throw, and .return methods.
    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 = {};
  define(IteratorPrototype, iteratorSymbol, function () {
    return this;
  });

  var getProto = Object.getPrototypeOf;
  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
  if (NativeIteratorPrototype &&
      NativeIteratorPrototype !== Op &&
      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
    // This environment has a native %IteratorPrototype%; use it instead
    // of the polyfill.
    IteratorPrototype = NativeIteratorPrototype;
  }

  var Gp = GeneratorFunctionPrototype.prototype =
    Generator.prototype = Object.create(IteratorPrototype);
  GeneratorFunction.prototype = GeneratorFunctionPrototype;
  define(Gp, "constructor", GeneratorFunctionPrototype);
  define(GeneratorFunctionPrototype, "constructor", GeneratorFunction);
  GeneratorFunction.displayName = define(
    GeneratorFunctionPrototype,
    toStringTagSymbol,
    "GeneratorFunction"
  );

  // Helper for defining the .next, .throw, and .return methods of the
  // Iterator interface in terms of a single ._invoke method.
  function defineIteratorMethods(prototype) {
    ["next", "throw", "return"].forEach(function(method) {
      define(prototype, method, function(arg) {
        return this._invoke(method, arg);
      });
    });
  }

  exports.isGeneratorFunction = function(genFun) {
    var ctor = typeof genFun === "function" && genFun.constructor;
    return ctor
      ? ctor === GeneratorFunction ||
        // For the native GeneratorFunction constructor, the best we can
        // do is to check its .name property.
        (ctor.displayName || ctor.name) === "GeneratorFunction"
      : false;
  };

  exports.mark = function(genFun) {
    if (Object.setPrototypeOf) {
      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
    } else {
      genFun.__proto__ = GeneratorFunctionPrototype;
      define(genFun, toStringTagSymbol, "GeneratorFunction");
    }
    genFun.prototype = Object.create(Gp);
    return genFun;
  };

  // Within the body of any async function, `await x` is transformed to
  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
  // `hasOwn.call(value, "__await")` to determine if the yielded value is
  // meant to be awaited.
  exports.awrap = function(arg) {
    return { __await: arg };
  };

  function AsyncIterator(generator, PromiseImpl) {
    function invoke(method, arg, resolve, reject) {
      var record = tryCatch(generator[method], generator, arg);
      if (record.type === "throw") {
        reject(record.arg);
      } else {
        var result = record.arg;
        var value = result.value;
        if (value &&
            typeof value === "object" &&
            hasOwn.call(value, "__await")) {
          return PromiseImpl.resolve(value.__await).then(function(value) {
            invoke("next", value, resolve, reject);
          }, function(err) {
            invoke("throw", err, resolve, reject);
          });
        }

        return PromiseImpl.resolve(value).then(function(unwrapped) {
          // When a yielded Promise is resolved, its final value becomes
          // the .value of the Promise<{value,done}> result for the
          // current iteration.
          result.value = unwrapped;
          resolve(result);
        }, function(error) {
          // If a rejected Promise was yielded, throw the rejection back
          // into the async generator function so it can be handled there.
          return invoke("throw", error, resolve, reject);
        });
      }
    }

    var previousPromise;

    function enqueue(method, arg) {
      function callInvokeWithMethodAndArg() {
        return new PromiseImpl(function(resolve, reject) {
          invoke(method, arg, resolve, reject);
        });
      }

      return previousPromise =
        // If enqueue has been called before, then we want to wait until
        // all previous Promises have been resolved before calling invoke,
        // so that results are always delivered in the correct order. If
        // enqueue has not been called before, then it is important to
        // call invoke immediately, without waiting on a callback to fire,
        // so that the async generator function has the opportunity to do
        // any necessary setup in a predictable way. This predictability
        // is why the Promise constructor synchronously invokes its
        // executor callback, and why async functions synchronously
        // execute code before the first await. Since we implement simple
        // async functions in terms of async generators, it is especially
        // important to get this right, even though it requires care.
        previousPromise ? previousPromise.then(
          callInvokeWithMethodAndArg,
          // Avoid propagating failures to Promises returned by later
          // invocations of the iterator.
          callInvokeWithMethodAndArg
        ) : callInvokeWithMethodAndArg();
    }

    // Define the unified helper method that is used to implement .next,
    // .throw, and .return (see defineIteratorMethods).
    this._invoke = enqueue;
  }

  defineIteratorMethods(AsyncIterator.prototype);
  define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
    return this;
  });
  exports.AsyncIterator = AsyncIterator;

  // Note that simple async functions are implemented on top of
  // AsyncIterator objects; they just return a Promise for the value of
  // the final result produced by the iterator.
  exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
    if (PromiseImpl === void 0) PromiseImpl = Promise;

    var iter = new AsyncIterator(
      wrap(innerFn, outerFn, self, tryLocsList),
      PromiseImpl
    );

    return exports.isGeneratorFunction(outerFn)
      ? iter // If outerFn is a generator, return the full iterator.
      : iter.next().then(function(result) {
          return result.done ? result.value : iter.next();
        });
  };

  function makeInvokeMethod(innerFn, self, context) {
    var state = GenStateSuspendedStart;

    return function invoke(method, arg) {
      if (state === GenStateExecuting) {
        throw new Error("Generator is already running");
      }

      if (state === GenStateCompleted) {
        if (method === "throw") {
          throw arg;
        }

        // Be forgiving, per 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$1) {
      // 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$1;
          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$1;
      }

    } else {
      // Re-yield the result returned by the delegate method.
      return info;
    }

    // The delegate iterator is finished, so forget it and continue with
    // the outer generator.
    context.delegate = null;
    return ContinueSentinel;
  }

  // Define Generator.prototype.{next,throw,return} in terms of the
  // unified ._invoke helper method.
  defineIteratorMethods(Gp);

  define(Gp, toStringTagSymbol, "Generator");

  // A Generator should always return itself as the iterator object when the
  // @@iterator function is called on it. Some browsers' implementations of the
  // iterator prototype chain incorrectly implement this, causing the Generator
  // object to not be returned from this call. This ensures that doesn't happen.
  // See https://github.com/facebook/regenerator/issues/274 for more details.
  define(Gp, iteratorSymbol, function() {
    return this;
  });

  define(Gp, "toString", function() {
    return "[object Generator]";
  });

  function pushTryEntry(locs) {
    var entry = { tryLoc: locs[0] };

    if (1 in locs) {
      entry.catchLoc = locs[1];
    }

    if (2 in locs) {
      entry.finallyLoc = locs[2];
      entry.afterLoc = locs[3];
    }

    this.tryEntries.push(entry);
  }

  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal";
    delete record.arg;
    entry.completion = record;
  }

  function Context(tryLocsList) {
    // The root entry object (effectively a try statement without a catch
    // or a finally block) gives us a place to store values thrown from
    // locations where there is no enclosing try statement.
    this.tryEntries = [{ tryLoc: "root" }];
    tryLocsList.forEach(pushTryEntry, this);
    this.reset(true);
  }

  exports.keys = function(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$1;
          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$1, 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$1;
      this.done = false;
      this.delegate = null;

      this.method = "next";
      this.arg = undefined$1;

      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$1;
          }
        }
      }
    },

    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$1;
        }

        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$1;
      }

      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.
   module.exports 
));

try {
  regeneratorRuntime = runtime;
} catch (accidentalStrictMode) {
  // This module should not be running in strict mode, so the above
  // assignment should always work unless something is misconfigured. Just
  // in case runtime.js accidentally runs in strict mode, in modern engines
  // we can explicitly access globalThis. In older engines we can escape
  // strict mode using a global Function call. This could conceivably fail
  // if a Content Security Policy forbids using Function, but in that case
  // the proper solution is to fix the accidental strict mode problem. If
  // you've misconfigured your bundler to force strict mode and applied a
  // CSP to forbid Function, and you're not willing to fix either of those
  // problems, please detail your unique predicament in a GitHub issue.
  if (typeof globalThis === "object") {
    globalThis.regeneratorRuntime = runtime;
  } else {
    Function("r", "regeneratorRuntime = r")(runtime);
  }
}
});

// TODO: type correctly or import lodash.keyBy
var keyBy = function keyBy(array, key) {
  return (// eslint-disable-next-line @typescript-eslint/no-explicit-any
    (array || []).reduce(function (r, x) {
      var _extends2;

      return _extends({}, r, (_extends2 = {}, _extends2[x[key]] = x, _extends2));
    }, {})
  );
};
var wait = function wait(ms) {
  return new Promise(function (resolve) {
    return setTimeout(resolve, ms);
  });
};
var poll = /*#__PURE__*/function () {
  var _ref = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee(fn, fnCondition, ms) {
    var result;
    return runtime_1.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            _context.next = 2;
            return fn();

          case 2:
            result = _context.sent;

          case 3:
            if (!fnCondition(result)) {
              _context.next = 11;
              break;
            }

            _context.next = 6;
            return wait(ms);

          case 6:
            _context.next = 8;
            return fn();

          case 8:
            result = _context.sent;
            _context.next = 3;
            break;

          case 11:
            return _context.abrupt("return", result);

          case 12:
          case "end":
            return _context.stop();
        }
      }
    }, _callee);
  }));

  return function poll(_x, _x2, _x3) {
    return _ref.apply(this, arguments);
  };
}();

BigNumber__default.set({
  EXPONENTIAL_AT: 50
});
var USDC_DECIMALS = 6;
var toBN = function toBN(amount) {
  return new BigNumber__default(amount || "0");
};
var toUnit = function toUnit(_ref2) {
  var amount = _ref2.amount,
      decimals = _ref2.decimals;
  var ONE_UNIT = toBN(10).pow(decimals);
  return toBN(amount).div(ONE_UNIT).toString();
};

var DAY = 86400;
var WEEK = DAY * 7;
var YEAR = DAY * 365;
function toMilliseconds(time) {
  return time * 1000;
}
function toSeconds(time) {
  return Math.floor(time / 1000);
}
function roundToWeek(time) {
  return Math.floor(time / WEEK) * WEEK;
}

var DefaultContext = {
  // Public API key provided by zapper.
  // see https://docs.zapper.fi/zapper-api/endpoints
  zapper: "96e0cc51-a62e-42ca-acee-910ea7d2a241",
  // The default tenderly dashboard for Yearn
  simulation: {
    dashboardUrl: "https://dashboard.tenderly.co/yearn/yearn-web",
    apiUrl: "https://simulate.yearn.network"
  },
  cache: {
    useCache: true,
    url: "https://cache.yearn.finance"
  },
  env: "production"
};
/**
 * [[Context]] is the configuration object passed around every function in
 * the SDK. It contains basic information on how to access the various services
 * that the SDK aggregates.
 *
 * [[Context]] **should not** be instantiated by users, as it's managed by
 * {@link Yearn.context}.
 */

var Context = /*#__PURE__*/function () {
  function Context(ctx) {
    this.ctx = Object.assign({}, DefaultContext, ctx);
    this.events = new EventEmitter().setMaxListeners(100);
    this.setProvider(ctx.provider);
  }
  /**
   * Change providers during executions for all services that require on-chain
   * interaction.
   * @param provider new provider(s)
   */


  var _proto = Context.prototype;

  _proto.setProvider = function setProvider(provider) {
    if (provider instanceof providers.JsonRpcProvider) {
      this.ctx.provider = {
        read: provider,
        write: provider
      };
    } else if (provider) {
      this.ctx.provider = provider;
    }

    this.events.emit(Context.PROVIDER, this.ctx.provider);
  };

  _createClass(Context, [{
    key: "provider",
    get: function get() {
      if (this.ctx.provider) return this.ctx.provider;
      throw new SdkError("provider must be undefined in Context for this feature to work.");
    }
  }, {
    key: "zapper",
    get: function get() {
      if (this.ctx.zapper) return encode({
        str: this.ctx.zapper + ":",
        encoding: "base64"
      });
      throw new SdkError("zapper must be undefined in Context for this feature to work.");
    }
  }, {
    key: "etherscan",
    get: function get() {
      if (this.ctx.etherscan) return this.ctx.etherscan;
      throw new SdkError("etherscan must be undefined in Context for this feature to work.");
    }
  }, {
    key: "addresses",
    get: function get() {
      return Object.assign({
        adapters: {}
      }, this.ctx.addresses);
    },
    set: function set(addresses) {
      this.ctx.addresses = addresses;
    }
  }, {
    key: "simulation",
    get: function get() {
      if (this.ctx.simulation) return this.ctx.simulation;
      throw new SdkError("simulation configuration must be defined in Context for this feature to work.");
    }
  }, {
    key: "cache",
    get: function get() {
      if (this.ctx.cache) return this.ctx.cache;
      throw new SdkError("cache must be defined in Context for this feature to work.");
    }
  }, {
    key: "subgraph",
    get: function get() {
      return this.ctx.subgraph;
    }
  }, {
    key: "partnerId",
    get: function get() {
      return this.ctx.partnerId;
    }
  }, {
    key: "locale",
    get: function get() {
      return this.ctx.locale || "en";
    }
  }, {
    key: "isDevelopment",
    get: function get() {
      return this.ctx.env !== "production";
    }
  }]);

  return Context;
}();
Context.PROVIDER = "refresh:provider";

var CachedFetcher = /*#__PURE__*/function () {
  function CachedFetcher(path, ctx, chainId) {
    this.path = path;
    this.ctx = ctx;
    this.chainId = chainId;
  }

  var _proto = CachedFetcher.prototype;

  _proto.fetch = /*#__PURE__*/function () {
    var _fetch = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee(queryParameters) {
      var _call$headers$get;

      var cached, path, call, timeout, _call, url, status, statusText, json, maxAgeMatches, maxAge, now;

      return runtime_1.wrap(function _callee$(_context) {
        while (1) {
          switch (_context.prev = _context.next) {
            case 0:
              if (!(!this.ctx.cache.useCache || !this.ctx.cache.url)) {
                _context.next = 2;
                break;
              }

              return _context.abrupt("return", undefined);

            case 2:
              cached = this.currentValue;

              if (!cached) {
                _context.next = 5;
                break;
              }

              return _context.abrupt("return", cached);

            case 5:
              path = this.ctx.cache.url + "/v1/chains/" + this.chainId + "/" + this.path;

              if (queryParameters) {
                path += "?" + queryParameters;
              }

              _context.prev = 7;
              timeout = 5000;
              _context.next = 11;
              return this.fetchWithTimeout(path, timeout);

            case 11:
              call = _context.sent;
              _context.next = 18;
              break;

            case 14:
              _context.prev = 14;
              _context.t0 = _context["catch"](7);
              console.warn("Call to cache at " + path + " timed out");
              return _context.abrupt("return", undefined);

            case 18:
              if (!(call.status !== 200)) {
                _context.next = 22;
                break;
              }

              _call = call, url = _call.url, status = _call.status, statusText = _call.statusText;
              console.warn("Call to cache failed at " + url + " (status " + status + " " + statusText + ")");
              return _context.abrupt("return", undefined);

            case 22:
              _context.next = 24;
              return call.json();

            case 24:
              json = _context.sent;

              if (json) {
                _context.next = 27;
                break;
              }

              return _context.abrupt("return", undefined);

            case 27:
              maxAgeMatches = (_call$headers$get = call.headers.get("cache-control")) == null ? void 0 : _call$headers$get.match(/max-age=(\d+)/);
              maxAge = maxAgeMatches ? parseInt(maxAgeMatches[1], 10) : 30;
              now = new Date().getTime();
              this.expiryDate = new Date(now + maxAge * 1000);
              this.cachedValue = json;
              return _context.abrupt("return", json);

            case 33:
            case "end":
              return _context.stop();
          }
        }
      }, _callee, this, [[7, 14]]);
    }));

    function fetch(_x) {
      return _fetch.apply(this, arguments);
    }

    return fetch;
  }();

  _proto.fetchWithTimeout = /*#__PURE__*/function () {
    var _fetchWithTimeout = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee2(url, timeout) {
      return runtime_1.wrap(function _callee2$(_context2) {
        while (1) {
          switch (_context2.prev = _context2.next) {
            case 0:
              return _context2.abrupt("return", Promise.race([fetch(url), new Promise(function (_, reject) {
                return setTimeout(function () {
                  return reject("timeout");
                }, timeout);
              })]));

            case 1:
            case "end":
              return _context2.stop();
          }
        }
      }, _callee2);
    }));

    function fetchWithTimeout(_x2, _x3) {
      return _fetchWithTimeout.apply(this, arguments);
    }

    return fetchWithTimeout;
  }();

  _createClass(CachedFetcher, [{
    key: "currentValue",
    get: function get() {
      if (!this.expiryDate) {
        return undefined;
      }

      var now = new Date();

      if (now < this.expiryDate && this.cachedValue) {
        return this.cachedValue;
      }

      return undefined;
    }
  }]);

  return CachedFetcher;
}();

var Service = function Service(chainId, ctx) {
  this.chainId = chainId;
  this.ctx = ctx;
  this.events = new Emittery();
};
var ServiceInterface = /*#__PURE__*/function (_Service) {
  _inheritsLoose(ServiceInterface, _Service);

  function ServiceInterface(yearn, chainId, ctx) {
    var _this;

    _this = _Service.call(this, chainId, ctx) || this;
    _this.yearn = yearn;
    return _this;
  }

  return ServiceInterface;
}(Service);
/**
 * Contract that supports two different providers to differentiate read and
 * write operations.
 */

var WrappedContract = function WrappedContract(address, abi, ctx) {
  var _this2 = this;

  this.address = address;
  this.abi = abi;
  this.read = new contracts.Contract(address, abi, ctx.provider.read);
  this.write = new contracts.Contract(address, abi, ctx.provider.write);
  ctx.events.on(Context.PROVIDER, function (provider) {
    _this2.read = new contracts.Contract(_this2.address, _this2.abi, provider.read);
    _this2.write = new contracts.Contract(_this2.address, _this2.abi, provider.write);
  });
};
var ContractAddressId;

(function (ContractAddressId) {
  ContractAddressId["oracle"] = "ORACLE";
  ContractAddressId["adapter_registry_v2"] = "REGISTRY_ADAPTER_V2_VAULTS";
  ContractAddressId["helper"] = "HELPER";
  ContractAddressId["allowlist"] = "ALLOW_LIST_REGISTRY";
  ContractAddressId["partner"] = "PARTNER_TRACKER";
  ContractAddressId["zapperZapIn"] = "ZAPPER_ZAP_IN";
  ContractAddressId["zapperZapOut"] = "ZAPPER_ZAP_OUT";
  ContractAddressId["portalsZapIn"] = "PORTALS_ZAP_IN";
  ContractAddressId["portalsZapOut"] = "PORTALS_ZAP_OUT";
  ContractAddressId["pickleZapIn"] = "PICKLE_ZAP_IN";
  ContractAddressId["yearnZapEth"] = "YEARN_ZAP_ETH";
  ContractAddressId["propertiesAggregator"] = "PROPERTIES_AGGREGATOR";
  ContractAddressId["cowProtocolRelayer"] = "COW_PROTOCOL_RELAYER";
  ContractAddressId["veYfiRegistry"] = "VEYFI_REGISTRY";
  ContractAddressId["veYfi"] = "VEYFI";
  ContractAddressId["claimRewardsZap"] = "CLAIM_REWARDS_ZAP";
  ContractAddressId["unused"] = "UNUSED";
})(ContractAddressId || (ContractAddressId = {}));
/**
 * A service that has a contract representation on chain.
 */


var ContractService = /*#__PURE__*/function (_Service2) {
  _inheritsLoose(ContractService, _Service2);

  function ContractService(chainId, ctx, addressProvider) {
    var _this3;

    _this3 = _Service2.call(this, chainId, ctx) || this;
    _this3.addressProvider = addressProvider;
    return _this3;
  }

  var _proto = ContractService.prototype;

  _proto._getContract = /*#__PURE__*/function () {
    var _getContract2 = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee(abi, contractId, ctx) {
      var address;
      return runtime_1.wrap(function _callee$(_context) {
        while (1) {
          switch (_context.prev = _context.next) {
            case 0:
              if (!(contractId === ContractAddressId.unused)) {
                _context.next = 2;
                break;
              }

              throw new Error("Trying to get the contract instance on the generic class.");

            case 2:
              _context.prev = 2;
              _context.next = 5;
              return this.addressProvider.addressById(contractId);

            case 5:
              address = _context.sent;
              return _context.abrupt("return", new WrappedContract(address, abi, ctx));

            case 9:
              _context.prev = 9;
              _context.t0 = _context["catch"](2);
              console.error("Contract address for " + contractId + " is missing from the Address Provider");
              throw _context.t0;

            case 13:
            case "end":
              return _context.stop();
          }
        }
      }, _callee, this, [[2, 9]]);
    }));

    function _getContract(_x, _x2, _x3) {
      return _getContract2.apply(this, arguments);
    }

    return _getContract;
  }();

  return ContractService;
}(Service);
ContractService.abi = [];
ContractService.contractId = ContractAddressId.unused;

/**
 * Supported chains in the yearn ecosystem.
 */
var Chains = {
  1: "ethereum",
  10: "optimism",
  250: "fantom",
  1337: "ethereum",
  42161: "arbitrum",
  2300: "bomb",
  56: "bsc"
};
var isEthereum = function isEthereum(chainId) {
  return chainId === 1 || chainId === 1337;
};
var isOptimism = function isOptimism(chainId) {
  return chainId === 10;
};
var allSupportedChains = /*#__PURE__*/Object.keys(Chains).map(function (key) {
  return Number(key);
});
var ETH_ADDRESS = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE";
var ZERO_ADDRESS = "0x0000000000000000000000000000000000000000";
var NATIVE_TOKEN_ADDRESS = ZERO_ADDRESS;
var NETWORK_SETTINGS = {
  1: {
    id: "ethereum",
    name: "Ethereum",
    chainId: 1,
    rpcUrl: "https://mainnet.infura.io/v3/9aa3d95b3bc440fa88ea12eaa4456161",
    nativeCurrency: {
      name: "Ethereum",
      symbol: "ETH",
      decimals: 18,
      address: ETH_ADDRESS
    },
    wrappedTokenAddress: "0xC02aaA39b223FE8D0A0e5C4F27