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authorLeonid <logvinov.leon@gmail.com>2017-06-10 20:11:22 +0800
committerGitHub <noreply@github.com>2017-06-10 20:11:22 +0800
commit2a97091ecbce55ab5b5ac0b9b125c076a265743f (patch)
tree0f28ace9b3eec7199bfec48378fd30bdaba19e2a
parent0e971fcc89735f2c0c681a43a53904890b965faa (diff)
parent1dd9af99e9d910c28f700725fd99684d7ae75cf7 (diff)
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Merge pull request #59 from 0xProject/addParamReturnComments
Add @param and @return comments to public methods
-rw-r--r--src/0x.js.ts58
-rw-r--r--src/contract_wrappers/exchange_wrapper.ts72
-rw-r--r--src/contract_wrappers/token_registry_wrapper.ts4
-rw-r--r--src/contract_wrappers/token_wrapper.ts29
4 files changed, 139 insertions, 24 deletions
diff --git a/src/0x.js.ts b/src/0x.js.ts
index 143ad8e1f..b1e4e25ff 100644
--- a/src/0x.js.ts
+++ b/src/0x.js.ts
@@ -23,6 +23,11 @@ import {orderSchema} from './schemas/order_schemas';
bigNumberConfigs.configure();
export class ZeroEx {
+ /**
+ * When creating an order without a specified taker or feeRecipient you must supply the Solidity
+ * address null type (as opposed to Javascripts `null`, `undefined` or empty string). We expose
+ * this constant for your convenience.
+ */
public static NULL_ADDRESS = constants.NULL_ADDRESS;
public exchange: ExchangeWrapper;
@@ -32,6 +37,10 @@ export class ZeroEx {
/**
* Verifies that the elliptic curve signature `signature` was generated
* by signing `dataHex` with the private key corresponding to the `signerAddressHex` address.
+ * @param dataHex The hex encoded data signed by the supplied signature.
+ * @param signature A JS object containing the elliptic curve signature parameters.
+ * @param signerAddressHex The hex encoded address that signed the dataHex, producing the supplied signature.
+ * @return Whether the signature is valid for the supplied signerAddressHex and dataHex.
*/
public static isValidSignature(dataHex: string, signature: ECSignature, signerAddressHex: string): boolean {
assert.isHexString('dataHex', dataHex);
@@ -53,9 +62,10 @@ export class ZeroEx {
}
}
/**
- * Generates pseudo-random 256 bit salt.
- * The salt is used to ensure that the 0x order generated has a unique orderHash that does
- * not collide with any other outstanding orders.
+ * Generates a pseudo-random 256-bit salt.
+ * The salt can be included in an 0x order, ensuring that the order generates a unique orderHash
+ * and will not collide with other outstanding orders that are identical in all other parameters.
+ * @return A pseudo-random 256-bit number that can be used as a salt.
*/
public static generatePseudoRandomSalt(): BigNumber.BigNumber {
// BigNumber.random returns a pseudo-random number between 0 & 1 with a passed in number of decimal places.
@@ -68,6 +78,9 @@ export class ZeroEx {
/**
* Checks if the supplied hex encoded order hash is valid.
* Note: Valid means it has the expected format, not that an order with the orderHash exists.
+ * Use this method when processing orderHashes submitted as user input.
+ * @param orderHashHex Hex encoded orderHash.
+ * @return Whether the supplied orderHashHex has the expected format.
*/
public static isValidOrderHash(orderHashHex: string): boolean {
// Since this method can be called to check if any arbitrary string conforms to an orderHash's
@@ -80,12 +93,15 @@ export class ZeroEx {
* A unit amount is defined as the amount of a token above the specified decimal places (integer part).
* E.g: If a currency has 18 decimal places, 1e18 or one quintillion of the currency is equivalent
* to 1 unit.
+ * @param amount The amount in baseUnits that you would like converted to units.
+ * @param decimals The number of decimal places the unit amount has.
+ * @return The amount in units.
*/
- public static toUnitAmount(amount: BigNumber.BigNumber, numDecimals: number): BigNumber.BigNumber {
+ public static toUnitAmount(amount: BigNumber.BigNumber, decimals: number): BigNumber.BigNumber {
assert.isBigNumber('amount', amount);
- assert.isNumber('numDecimals', numDecimals);
+ assert.isNumber('decimals', decimals);
- const aUnit = new BigNumber(10).pow(numDecimals);
+ const aUnit = new BigNumber(10).pow(decimals);
const unit = amount.div(aUnit);
return unit;
}
@@ -93,15 +109,24 @@ export class ZeroEx {
* A baseUnit is defined as the smallest denomination of a token. An amount expressed in baseUnits
* is the amount expressed in the smallest denomination.
* E.g: 1 unit of a token with 18 decimal places is expressed in baseUnits as 1000000000000000000
+ * @param amount The amount of units that you would like converted to baseUnits.
+ * @param decimals The number of decimal places the unit amount has.
+ * @return The amount in baseUnits.
*/
- public static toBaseUnitAmount(amount: BigNumber.BigNumber, numDecimals: number): BigNumber.BigNumber {
+ public static toBaseUnitAmount(amount: BigNumber.BigNumber, decimals: number): BigNumber.BigNumber {
assert.isBigNumber('amount', amount);
- assert.isNumber('numDecimals', numDecimals);
+ assert.isNumber('decimals', decimals);
- const unit = new BigNumber(10).pow(numDecimals);
+ const unit = new BigNumber(10).pow(decimals);
const baseUnitAmount = amount.times(unit);
return baseUnitAmount;
}
+ /**
+ * Instantiates a new ZeroEx instance that provides the public interface to the 0x.js library.
+ * @param web3 The Web3.js instance you would like the 0x.js library to use for interacting with
+ * the Ethereum network.
+ * @return An instance of the 0x.js ZeroEx class.
+ */
constructor(web3: Web3) {
this.web3Wrapper = new Web3Wrapper(web3);
this.token = new TokenWrapper(this.web3Wrapper);
@@ -109,7 +134,9 @@ export class ZeroEx {
this.tokenRegistry = new TokenRegistryWrapper(this.web3Wrapper);
}
/**
- * Sets a new provider for the web3 instance used by 0x.js
+ * Sets a new provider for the web3 instance used by 0x.js. Updating the provider will stop all
+ * subscriptions so you will need to re-subscribe to all events relevant to your app after this call.
+ * @param provider The Web3.Provider you would like the 0x.js library to use from now on.
*/
public async setProviderAsync(provider: Web3.Provider) {
this.web3Wrapper.setProvider(provider);
@@ -118,14 +145,17 @@ export class ZeroEx {
this.token.invalidateContractInstances();
}
/**
- * Get addresses via the supplied web3 instance available for sending transactions.
+ * Get addresses available throught the supplied web3 instance available for sending transactions.
+ * @return An array of Ethereum addresses available.
*/
public async getAvailableAddressesAsync(): Promise<string[]> {
const availableAddresses = await this.web3Wrapper.getAvailableAddressesAsync();
return availableAddresses;
}
/**
- * Computes the orderHash for a given order and returns it as a hex encoded string.
+ * Computes the orderHash for a supplied order.
+ * @param order A JS object that conforms to the Order or SignedOrder interface definitions.
+ * @return The resulting orderHash from hashing the supplied order.
*/
public async getOrderHashHexAsync(order: Order|SignedOrder): Promise<string> {
assert.doesConformToSchema('order', order, orderSchema);
@@ -137,6 +167,10 @@ export class ZeroEx {
/**
* Signs an orderHash and returns it's elliptic curve signature.
* This method currently supports TestRPC, Geth and Parity above and below V1.6.6
+ * @param orderHashHex Hex encoded orderHash to sign.
+ * @param signerAddress The hex encoded Ethereum address you wish to sign it with. This address
+ * must be available via the Web3.Provider supplied to 0x.js.
+ * @return A JS object containing the Elliptic curve signature parameters generated by signing the orderHashHex.
*/
public async signOrderHashAsync(orderHashHex: string, signerAddress: string): Promise<ECSignature> {
assert.isHexString('orderHashHex', orderHashHex);
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 65a873a9f..76f86e464 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -79,6 +79,9 @@ export class ExchangeWrapper extends ContractWrapper {
* Returns the unavailable takerAmount of an order. Unavailable amount is defined as the total
* amount that has been filled or cancelled. The remaining takerAmount can be calculated by
* subtracting the unavailable amount from the total order takerAmount.
+ * @param orderHashHex The hex encoded orderHash for which you would like to retrieve the
+ * unavailable takerAmount.
+ * @return The amount of the order (in taker tokens) that has either been filled or canceled.
*/
public async getUnavailableTakerAmountAsync(orderHashHex: string): Promise<BigNumber.BigNumber> {
assert.isValidOrderHash('orderHashHex', orderHashHex);
@@ -91,6 +94,8 @@ export class ExchangeWrapper extends ContractWrapper {
}
/**
* Retrieve the takerAmount of an order that has already been filled.
+ * @param orderHashHex The hex encoded orderHash for which you would like to retrieve the filled takerAmount.
+ * @return The amount of the order (in taker tokens) that has already been filled.
*/
public async getFilledTakerAmountAsync(orderHashHex: string): Promise<BigNumber.BigNumber> {
assert.isValidOrderHash('orderHashHex', orderHashHex);
@@ -103,6 +108,9 @@ export class ExchangeWrapper extends ContractWrapper {
}
/**
* Retrieve the takerAmount of an order that has been cancelled.
+ * @param orderHashHex The hex encoded orderHash for which you would like to retrieve the
+ * cancelled takerAmount.
+ * @return The amount of the order (in taker tokens) that has been cancelled.
*/
public async getCanceledTakerAmountAsync(orderHashHex: string): Promise<BigNumber.BigNumber> {
assert.isValidOrderHash('orderHashHex', orderHashHex);
@@ -119,7 +127,13 @@ export class ExchangeWrapper extends ContractWrapper {
* could arise where a users balance or allowance changes before the fillOrder executes. Because of this,
* we allow you to specify `shouldCheckTransfer`. If true, the smart contract will not throw if while
* executing, the parties do not have sufficient balances/allowances, preserving gas costs. Setting it to
- * false forgoes this check and causes the smart contract to throw instead.
+ * false forgoes this check and causes the smart contract to throw (using all the gas supplied) instead.
+ * @param signedOrder A JS object that conforms to the SignedOrder interface.
+ * @param takerTokenFillAmount The amount of the order (in taker tokens baseUnits) that you wish to fill.
+ * @param shouldCheckTransfer Whether or not you wish for the contract call to throw if upon
+ * execution the tokens cannot be transferred.
+ * @param takerAddress The user Ethereum address who would like to fill this order.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
*/
public async fillOrderAsync(signedOrder: SignedOrder, takerTokenFillAmount: BigNumber.BigNumber,
shouldCheckTransfer: boolean, takerAddress: string): Promise<void> {
@@ -164,6 +178,15 @@ export class ExchangeWrapper extends ContractWrapper {
* Sequentially and atomically fills signedOrders up to the specified takerTokenFillAmount.
* If the fill amount is reached - it succeeds and does not fill the rest of the orders.
* If fill amount is not reached - it fills as much of the fill amount as possible and succeeds.
+ * @param signedOrders The array of signedOrders that you would like to fill until
+ * takerTokenFillAmount is reached.
+ * @param takerTokenFillAmount The total amount of the takerTokens you would like to fill.
+ * @param shouldCheckTransfer Whether or not you wish for the contract call to throw if upon
+ * execution any of the tokens cannot be transferred. If set to false,
+ * the call will continue to fill subsequent signedOrders even when
+ * some cannot be filled.
+ * @param takerAddress The user Ethereum address who would like to fill these orders.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
*/
public async fillOrdersUpToAsync(signedOrders: SignedOrder[], takerTokenFillAmount: BigNumber.BigNumber,
shouldCheckTransfer: boolean, takerAddress: string): Promise<void> {
@@ -228,6 +251,13 @@ export class ExchangeWrapper extends ContractWrapper {
* Executes multiple fills atomically in a single transaction.
* If shouldCheckTransfer is set to true, it will continue filling subsequent orders even when earlier ones fail.
* When shouldCheckTransfer is set to false, if any fill fails, the entire batch fails.
+ * @param orderFillRequests An array of JS objects that conform to the OrderFillRequest interface.
+ * @param shouldCheckTransfer Whether or not you wish for the contract call to throw if upon
+ * execution any of the tokens cannot be transferred. If set to false,
+ * the call will continue to fill subsequent signedOrders even when some
+ * cannot be filled.
+ * @param takerAddress The user Ethereum address who would like to fill these orders.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
*/
public async batchFillOrderAsync(orderFillRequests: OrderFillRequest[],
shouldCheckTransfer: boolean, takerAddress: string): Promise<void> {
@@ -287,25 +317,30 @@ export class ExchangeWrapper extends ContractWrapper {
/**
* Attempts to fill a specific amount of an order. If the entire amount specified cannot be filled,
* the fill order is abandoned.
+ * @param signedOrder A JS object that conforms to the SignedOrder interface. The
+ * signedOrder you wish to fill.
+ * @param takerTokenFillAmount The total amount of the takerTokens you would like to fill.
+ * @param takerAddress The user Ethereum address who would like to fill this order.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
*/
- public async fillOrKillOrderAsync(signedOrder: SignedOrder, fillTakerAmount: BigNumber.BigNumber,
- takerAddress: string) {
+ public async fillOrKillOrderAsync(signedOrder: SignedOrder, takerTokenFillAmount: BigNumber.BigNumber,
+ takerAddress: string): Promise<void> {
assert.doesConformToSchema('signedOrder', signedOrder, signedOrderSchema);
- assert.isBigNumber('fillTakerAmount', fillTakerAmount);
+ assert.isBigNumber('takerTokenFillAmount', takerTokenFillAmount);
await assert.isSenderAddressAsync('takerAddress', takerAddress, this.web3Wrapper);
const exchangeInstance = await this.getExchangeContractAsync();
- await this.validateFillOrderAndThrowIfInvalidAsync(signedOrder, fillTakerAmount, takerAddress);
+ await this.validateFillOrderAndThrowIfInvalidAsync(signedOrder, takerTokenFillAmount, takerAddress);
await this.validateFillOrKillOrderAndThrowIfInvalidAsync(signedOrder, exchangeInstance.address,
- fillTakerAmount);
+ takerTokenFillAmount);
const [orderAddresses, orderValues] = ExchangeWrapper.getOrderAddressesAndValues(signedOrder);
const gas = await exchangeInstance.fillOrKill.estimateGas(
orderAddresses,
orderValues,
- fillTakerAmount,
+ takerTokenFillAmount,
signedOrder.ecSignature.v,
signedOrder.ecSignature.r,
signedOrder.ecSignature.s,
@@ -316,7 +351,7 @@ export class ExchangeWrapper extends ContractWrapper {
const response: ContractResponse = await exchangeInstance.fillOrKill(
orderAddresses,
orderValues,
- fillTakerAmount,
+ takerTokenFillAmount,
signedOrder.ecSignature.v,
signedOrder.ecSignature.r,
signedOrder.ecSignature.s,
@@ -330,9 +365,12 @@ export class ExchangeWrapper extends ContractWrapper {
/**
* Batch version of fillOrKill. Allows a taker to specify a batch of orders that will either be atomically
* filled (each to the specified fillAmount) or aborted.
+ * @param orderFillOrKillRequests An array of JS objects that conform to the OrderFillOrKillRequest interface.
+ * @param takerAddress The user Ethereum address who would like to fill there orders.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
*/
public async batchFillOrKillAsync(orderFillOrKillRequests: OrderFillOrKillRequest[],
- takerAddress: string) {
+ takerAddress: string): Promise<void> {
await assert.isSenderAddressAsync('takerAddress', takerAddress, this.web3Wrapper);
assert.doesConformToSchema('orderFillOrKillRequests', orderFillOrKillRequests, orderFillOrKillRequestsSchema);
const exchangeInstance = await this.getExchangeContractAsync();
@@ -382,6 +420,9 @@ export class ExchangeWrapper extends ContractWrapper {
}
/**
* Cancel a given fill amount of an order. Cancellations are cumulative.
+ * @param order A JS object that conforms to the Order or SignedOrder interface.
+ * The order you would like to cancel.
+ * @param takerTokenCancelAmount The amount (specified in taker tokens) that you would like to cancel.
*/
public async cancelOrderAsync(
order: Order|SignedOrder, takerTokenCancelAmount: BigNumber.BigNumber): Promise<void> {
@@ -415,13 +456,16 @@ export class ExchangeWrapper extends ContractWrapper {
/**
* Batch version of cancelOrderAsync. Atomically cancels multiple orders in a single transaction.
* All orders must be from the same maker.
+ * @param orderCancellationRequests An array of JS objects that conform to the OrderCancellationRequest
+ * interface.
*/
public async batchCancelOrderAsync(orderCancellationRequests: OrderCancellationRequest[]): Promise<void> {
const makers = _.map(orderCancellationRequests, cancellationRequest => cancellationRequest.order.maker);
assert.hasAtMostOneUniqueValue(makers, ExchangeContractErrs.MULTIPLE_MAKERS_IN_SINGLE_CANCEL_BATCH_DISALLOWED);
const maker = makers[0];
await assert.isSenderAddressAsync('maker', maker, this.web3Wrapper);
- assert.doesConformToSchema('orderCancellationRequests', orderCancellationRequests, orderCancellationRequestsSchema);
+ assert.doesConformToSchema('orderCancellationRequests', orderCancellationRequests,
+ orderCancellationRequestsSchema);
for (const cancellationRequest of orderCancellationRequests) {
await this.validateCancelOrderAndThrowIfInvalidAsync(
cancellationRequest.order, cancellationRequest.takerTokenCancelAmount,
@@ -461,9 +505,15 @@ export class ExchangeWrapper extends ContractWrapper {
}
/**
* Subscribe to an event type emitted by the Exchange smart contract
+ * @param eventName The exchange contract event you would like to subscribe to.
+ * @param subscriptionOpts Subscriptions options that let you configure the subscription.
+ * @param indexFilterValues A JS object where the keys are indexed args returned by the event and
+ * the value is the value you are interested in. E.g `{maker: aUserAddressHex}`
+ * @param callback The callback that will be called everytime a matching event is found.
*/
public async subscribeAsync(eventName: ExchangeEvents, subscriptionOpts: SubscriptionOpts,
- indexFilterValues: IndexFilterValues, callback: EventCallback) {
+ indexFilterValues: IndexFilterValues, callback: EventCallback):
+ Promise<void> {
const exchangeContract = await this.getExchangeContractAsync();
let createLogEvent: CreateContractEvent;
switch (eventName) {
diff --git a/src/contract_wrappers/token_registry_wrapper.ts b/src/contract_wrappers/token_registry_wrapper.ts
index 86bea1c5d..96346a7a4 100644
--- a/src/contract_wrappers/token_registry_wrapper.ts
+++ b/src/contract_wrappers/token_registry_wrapper.ts
@@ -13,6 +13,10 @@ export class TokenRegistryWrapper extends ContractWrapper {
public invalidateContractInstance(): void {
delete this.tokenRegistryContractIfExists;
}
+ /**
+ * Retrieves all the tokens currently listed in the Token Registry smart contract
+ * @return An array of JS objects that conform to the Token interface.
+ */
public async getTokensAsync(): Promise<Token[]> {
const tokenRegistryContract = await this.getTokenRegistryContractAsync();
diff --git a/src/contract_wrappers/token_wrapper.ts b/src/contract_wrappers/token_wrapper.ts
index 4412b1299..bb79cac47 100644
--- a/src/contract_wrappers/token_wrapper.ts
+++ b/src/contract_wrappers/token_wrapper.ts
@@ -20,7 +20,9 @@ export class TokenWrapper extends ContractWrapper {
this.tokenContractsByAddress = {};
}
/**
- * Returns an owner's ERC20 token balance.
+ * Retrieves an owner's ERC20 token balance.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param ownerAddress The hex encoded user Ethereum address whose balance you would like to check.
*/
public async getBalanceAsync(tokenAddress: string, ownerAddress: string): Promise<BigNumber.BigNumber> {
assert.isETHAddressHex('ownerAddress', ownerAddress);
@@ -36,6 +38,11 @@ export class TokenWrapper extends ContractWrapper {
/**
* Sets the spender's allowance to a specified number of baseUnits on behalf of the owner address.
* Equivalent to the ERC20 spec method `approve`.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param ownerAddress The hex encoded user Ethereum address who would like to set an allowance
+ * for spenderAddress.
+ * @param spenderAddress The hex encoded user Ethereum address who will be able to spend the set allowance.
+ * @param amountInBaseUnits The allowance amount you would like to set.
*/
public async setAllowanceAsync(tokenAddress: string, ownerAddress: string, spenderAddress: string,
amountInBaseUnits: BigNumber.BigNumber): Promise<void> {
@@ -57,6 +64,10 @@ export class TokenWrapper extends ContractWrapper {
}
/**
* Retrieves the owners allowance in baseUnits set to the spender's address.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param ownerAddress The hex encoded user Ethereum address whose allowance to spenderAddress
+ * you would like to retrieve.
+ * @param spenderAddress The hex encoded user Ethereum address who can spend the allowance you are fetching.
*/
public async getAllowanceAsync(tokenAddress: string, ownerAddress: string, spenderAddress: string) {
assert.isETHAddressHex('ownerAddress', ownerAddress);
@@ -71,6 +82,8 @@ export class TokenWrapper extends ContractWrapper {
}
/**
* Retrieves the owner's allowance in baseUnits set to the 0x proxy contract.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param ownerAddress The hex encoded user Ethereum address whose proxy contract allowance we are retrieving.
*/
public async getProxyAllowanceAsync(tokenAddress: string, ownerAddress: string) {
assert.isETHAddressHex('ownerAddress', ownerAddress);
@@ -83,6 +96,10 @@ export class TokenWrapper extends ContractWrapper {
/**
* Sets the 0x proxy contract's allowance to a specified number of a tokens' baseUnits on behalf
* of an owner address.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param ownerAddress The hex encoded user Ethereum address who is setting an allowance
+ * for the Proxy contract.
+ * @param amountInBaseUnits The allowance amount specified in baseUnits.
*/
public async setProxyAllowanceAsync(tokenAddress: string, ownerAddress: string,
amountInBaseUnits: BigNumber.BigNumber): Promise<void> {
@@ -95,6 +112,10 @@ export class TokenWrapper extends ContractWrapper {
}
/**
* Transfers `amountInBaseUnits` ERC20 tokens from `fromAddress` to `toAddress`.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param fromAddress The hex encoded user Ethereum address that will send the funds.
+ * @param toAddress The hex encoded user Ethereum address that will receive the funds.
+ * @param amountInBaseUnits The amount (specified in baseUnits) of the token to transfer.
*/
public async transferAsync(tokenAddress: string, fromAddress: string, toAddress: string,
amountInBaseUnits: BigNumber.BigNumber): Promise<void> {
@@ -118,6 +139,12 @@ export class TokenWrapper extends ContractWrapper {
* Transfers `amountInBaseUnits` ERC20 tokens from `fromAddress` to `toAddress`.
* Requires the fromAddress to have sufficient funds and to have approved an allowance of
* `amountInBaseUnits` for senderAddress.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param fromAddress The hex encoded user Ethereum address that will send the funds.
+ * @param toAddress The hex encoded user Ethereum address that will receive the funds.
+ * @param senderAddress The hex encoded user Ethereum address whose funds are being sent. The senderAddress
+ * must have set an allowance to the fromAddress before this call.
+ * @param amountInBaseUnits The amount (specified in baseUnits) of the token to transfer.
*/
public async transferFromAsync(tokenAddress: string, fromAddress: string, toAddress: string,
senderAddress: string, amountInBaseUnits: BigNumber.BigNumber):