5 files changed, 21 insertions, 12 deletions
diff --git a/packages/contracts/util/crypto.ts b/packages/contracts/util/crypto.ts
index 810072d2f..3661b3afd 100644
--- a/packages/contracts/util/crypto.ts
+++ b/packages/contracts/util/crypto.ts
@@ -18,7 +18,7 @@ export const crypto = {
     solSHA256(args: any[]): Buffer {
         return crypto._solHash(args, ABI.soliditySHA256);
     },
-    _solHash(args: any[], hashFunction: (types: string[], values: any[]) => Buffer) {
+    _solHash(args: any[], hashFunction: (types: string[], values: any[]) => Buffer): Buffer {
         const argTypes: string[] = [];
         _.each(args, (arg, i) => {
             const isNumber = _.isFinite(arg);
diff --git a/packages/contracts/util/formatters.ts b/packages/contracts/util/formatters.ts
index 8e0dfb09e..3e3b67495 100644
--- a/packages/contracts/util/formatters.ts
+++ b/packages/contracts/util/formatters.ts
@@ -9,7 +9,7 @@ export const formatters = {
         signedOrders: SignedOrder[],
         shouldThrowOnInsufficientBalanceOrAllowance: boolean,
         fillTakerTokenAmounts: BigNumber[] = [],
-    ) {
+    ): BatchFillOrders {
         const batchFill: BatchFillOrders = {
             orderAddresses: [],
             orderValues: [],
@@ -48,7 +48,7 @@ export const formatters = {
         signedOrders: SignedOrder[],
         shouldThrowOnInsufficientBalanceOrAllowance: boolean,
         fillTakerTokenAmount: BigNumber,
-    ) {
+    ): FillOrdersUpTo {
         const fillUpTo: FillOrdersUpTo = {
             orderAddresses: [],
             orderValues: [],
@@ -80,7 +80,7 @@ export const formatters = {
         });
         return fillUpTo;
     },
-    createBatchCancel(signedOrders: SignedOrder[], cancelTakerTokenAmounts: BigNumber[] = []) {
+    createBatchCancel(signedOrders: SignedOrder[], cancelTakerTokenAmounts: BigNumber[] = []): BatchCancelOrders {
         const batchCancel: BatchCancelOrders = {
             orderAddresses: [],
             orderValues: [],
diff --git a/packages/contracts/util/multi_sig_wrapper.ts b/packages/contracts/util/multi_sig_wrapper.ts
index 9f6dcec52..c66106b9a 100644
--- a/packages/contracts/util/multi_sig_wrapper.ts
+++ b/packages/contracts/util/multi_sig_wrapper.ts
@@ -11,7 +11,7 @@ import { TransactionDataParams } from './types';
 
 export class MultiSigWrapper {
     private _multiSig: MultiSigWalletContract;
-    public static encodeFnArgs(name: string, abi: AbiDefinition[], args: any[]) {
+    public static encodeFnArgs(name: string, abi: AbiDefinition[], args: any[]): string {
         const abiEntity = _.find(abi, { name }) as MethodAbi;
         if (_.isUndefined(abiEntity)) {
             throw new Error(`Did not find abi entry for name: ${name}`);
@@ -33,7 +33,7 @@ export class MultiSigWrapper {
         from: string,
         dataParams: TransactionDataParams,
         value: BigNumber = new BigNumber(0),
-    ) {
+    ): Promise<string> {
         const { name, abi, args = [] } = dataParams;
         const encoded = MultiSigWrapper.encodeFnArgs(name, abi, args);
         return this._multiSig.submitTransaction.sendTransactionAsync(destination, value, encoded, {
diff --git a/packages/contracts/util/signed_order_utils.ts b/packages/contracts/util/signed_order_utils.ts
index fc2f800cd..30a2814e7 100644
--- a/packages/contracts/util/signed_order_utils.ts
+++ b/packages/contracts/util/signed_order_utils.ts
@@ -6,6 +6,15 @@ import * as _ from 'lodash';
 
 import { crypto } from './crypto';
 
+interface OrderAddressesAndValues {
+    orderAddresses: string[];
+    orderValues: BigNumber[];
+}
+
+interface OrderCancel extends OrderAddressesAndValues {
+    cancelTakerTokenAmount: BigNumber;
+}
+
 export const signedOrderUtils = {
     createFill: (
         signedOrder: SignedOrder,
@@ -20,14 +29,14 @@ export const signedOrderUtils = {
         };
         return fill;
     },
-    createCancel(signedOrder: SignedOrder, cancelTakerTokenAmount?: BigNumber) {
+    createCancel(signedOrder: SignedOrder, cancelTakerTokenAmount?: BigNumber): OrderCancel {
         const cancel = {
             ...signedOrderUtils.getOrderAddressesAndValues(signedOrder),
             cancelTakerTokenAmount: cancelTakerTokenAmount || signedOrder.takerTokenAmount,
         };
         return cancel;
     },
-    getOrderAddressesAndValues(signedOrder: SignedOrder) {
+    getOrderAddressesAndValues(signedOrder: SignedOrder): OrderAddressesAndValues {
         return {
             orderAddresses: [
                 signedOrder.maker,
diff --git a/packages/contracts/util/token_registry_wrapper.ts b/packages/contracts/util/token_registry_wrapper.ts
index d78c8a64e..bed62fa53 100644
--- a/packages/contracts/util/token_registry_wrapper.ts
+++ b/packages/contracts/util/token_registry_wrapper.ts
@@ -9,7 +9,7 @@ export class TokenRegWrapper {
     constructor(tokenRegContract: TokenRegistryContract) {
         this._tokenReg = tokenRegContract;
     }
-    public async addTokenAsync(token: Token, from: string) {
+    public async addTokenAsync(token: Token, from: string): Promise<string> {
         const tx = this._tokenReg.addToken.sendTransactionAsync(
             token.address as string,
             token.name,
@@ -21,7 +21,7 @@ export class TokenRegWrapper {
         );
         return tx;
     }
-    public async getTokenMetaDataAsync(tokenAddress: string) {
+    public async getTokenMetaDataAsync(tokenAddress: string): Promise<Token> {
         const data = await this._tokenReg.getTokenMetaData.callAsync(tokenAddress);
         const token: Token = {
             address: data[0],
@@ -33,7 +33,7 @@ export class TokenRegWrapper {
         };
         return token;
     }
-    public async getTokenByNameAsync(tokenName: string) {
+    public async getTokenByNameAsync(tokenName: string): Promise<Token> {
         const data = await this._tokenReg.getTokenByName.callAsync(tokenName);
         const token: Token = {
             address: data[0],
@@ -45,7 +45,7 @@ export class TokenRegWrapper {
         };
         return token;
     }
-    public async getTokenBySymbolAsync(tokenSymbol: string) {
+    public async getTokenBySymbolAsync(tokenSymbol: string): Promise<Token> {
         const data = await this._tokenReg.getTokenBySymbol.callAsync(tokenSymbol);
         const token: Token = {
             address: data[0],