Fix tslint issues

packages/0x.js/src/0x.ts

@@ -61,7 +61,7 @@ export class ZeroEx {
      * ERC721 proxy smart contract.
      */
     public erc721Proxy: ERC721ProxyWrapper;
-    private _contractWrappers: ContractWrappers;
+    private readonly _contractWrappers: ContractWrappers;
     /**
      * Generates a pseudo-random 256-bit salt.
      * The salt can be included in a 0x order, ensuring that the order generates a unique orderHash

packages/0x.js/test/global_hooks.ts

@@ -7,7 +7,7 @@ before('migrate contracts', async function(): Promise<void> {
     // HACK: Since the migrations take longer then our global mocha timeout limit
     // we manually increase it for this before hook.
     const mochaTestTimeoutMs = 20000;
-    this.timeout(mochaTestTimeoutMs);
+    this.timeout(mochaTestTimeoutMs); // tslint:disable-line:no-invalid-this
     const txDefaults = {
         gas: devConstants.GAS_LIMIT,
         from: devConstants.TESTRPC_FIRST_ADDRESS,

packages/assert/src/index.ts

@@ -8,33 +8,33 @@ const HEX_REGEX = /^0x[0-9A-F]*$/i;
 export const assert = {
     isBigNumber(variableName: string, value: BigNumber): void {
         const isBigNumber = _.isObject(value) && (value as any).isBigNumber;
-        this.assert(isBigNumber, this.typeAssertionMessage(variableName, 'BigNumber', value));
+        assert.assert(isBigNumber, assert.typeAssertionMessage(variableName, 'BigNumber', value));
     },
     isValidBaseUnitAmount(variableName: string, value: BigNumber): void {
         assert.isBigNumber(variableName, value);
         const isNegative = value.lessThan(0);
-        this.assert(!isNegative, `${variableName} cannot be a negative number, found value: ${value.toNumber()}`);
+        assert.assert(!isNegative, `${variableName} cannot be a negative number, found value: ${value.toNumber()}`);
         const hasDecimals = value.decimalPlaces() !== 0;
-        this.assert(
+        assert.assert(
             !hasDecimals,
             `${variableName} should be in baseUnits (no decimals), found value: ${value.toNumber()}`,
         );
     },
     isString(variableName: string, value: string): void {
-        this.assert(_.isString(value), this.typeAssertionMessage(variableName, 'string', value));
+        assert.assert(_.isString(value), assert.typeAssertionMessage(variableName, 'string', value));
     },
     isFunction(variableName: string, value: any): void {
-        this.assert(_.isFunction(value), this.typeAssertionMessage(variableName, 'function', value));
+        assert.assert(_.isFunction(value), assert.typeAssertionMessage(variableName, 'function', value));
     },
     isHexString(variableName: string, value: string): void {
-        this.assert(
+        assert.assert(
             _.isString(value) && HEX_REGEX.test(value),
-            this.typeAssertionMessage(variableName, 'HexString', value),
+            assert.typeAssertionMessage(variableName, 'HexString', value),
         );
     },
     isETHAddressHex(variableName: string, value: string): void {
-        this.assert(_.isString(value), this.typeAssertionMessage(variableName, 'string', value));
-        this.assert(addressUtils.isAddress(value), this.typeAssertionMessage(variableName, 'ETHAddressHex', value));
+        assert.assert(_.isString(value), assert.typeAssertionMessage(variableName, 'string', value));
+        assert.assert(addressUtils.isAddress(value), assert.typeAssertionMessage(variableName, 'ETHAddressHex', value));
     },
     doesBelongToStringEnum(
         variableName: string,
@@ -51,17 +51,17 @@ export const assert = {
         );
     },
     hasAtMostOneUniqueValue(value: any[], errMsg: string): void {
-        this.assert(_.uniq(value).length <= 1, errMsg);
+        assert.assert(_.uniq(value).length <= 1, errMsg);
     },
     isNumber(variableName: string, value: number): void {
-        this.assert(_.isFinite(value), this.typeAssertionMessage(variableName, 'number', value));
+        assert.assert(_.isFinite(value), assert.typeAssertionMessage(variableName, 'number', value));
     },
     isBoolean(variableName: string, value: boolean): void {
-        this.assert(_.isBoolean(value), this.typeAssertionMessage(variableName, 'boolean', value));
+        assert.assert(_.isBoolean(value), assert.typeAssertionMessage(variableName, 'boolean', value));
     },
     isWeb3Provider(variableName: string, value: any): void {
         const isWeb3Provider = _.isFunction(value.send) || _.isFunction(value.sendAsync);
-        this.assert(isWeb3Provider, this.typeAssertionMessage(variableName, 'Provider', value));
+        assert.assert(isWeb3Provider, assert.typeAssertionMessage(variableName, 'Provider', value));
     },
     doesConformToSchema(variableName: string, value: any, schema: Schema, subSchemas?: Schema[]): void {
         if (_.isUndefined(value)) {
@@ -76,15 +76,15 @@ export const assert = {
         const msg = `Expected ${variableName} to conform to schema ${schema.id}
 Encountered: ${JSON.stringify(value, null, '\t')}
 Validation errors: ${validationResult.errors.join(', ')}`;
-        this.assert(!hasValidationErrors, msg);
+        assert.assert(!hasValidationErrors, msg);
     },
     isWebUri(variableName: string, value: any): void {
         const isValidUrl = !_.isUndefined(validUrl.isWebUri(value));
-        this.assert(isValidUrl, this.typeAssertionMessage(variableName, 'web uri', value));
+        assert.assert(isValidUrl, assert.typeAssertionMessage(variableName, 'web uri', value));
     },
     isUri(variableName: string, value: any): void {
         const isValidUri = !_.isUndefined(validUrl.isUri(value));
-        this.assert(isValidUri, this.typeAssertionMessage(variableName, 'uri', value));
+        assert.assert(isValidUri, assert.typeAssertionMessage(variableName, 'uri', value));
     },
     assert(condition: boolean, message: string): void {
         if (!condition) {

packages/assert/test/assert_test.ts

@@ -49,7 +49,7 @@ describe('Assertions', () => {
     });
     describe('#isFunction', () => {
         it('should not throw for valid input', () => {
-            const validInputs = [BigNumber, assert.isString];
+            const validInputs = [BigNumber, assert.isString.bind(assert)];
             validInputs.forEach(input => expect(assert.isFunction.bind(assert, variableName, input)).to.not.throw());
         });
         it('should throw for invalid input', () => {

packages/base-contract/src/index.ts

@@ -72,15 +72,13 @@ export class BaseContract {
         // 1. Optional param passed in to public method call
         // 2. Global config passed in at library instantiation
         // 3. Gas estimate calculation + safety margin
-        const removeUndefinedProperties = _.pickBy;
-        const txDataWithDefaults: TxData = {
+        const removeUndefinedProperties = _.pickBy.bind(_);
+        const txDataWithDefaults = {
             ...removeUndefinedProperties(txDefaults),
-            ...removeUndefinedProperties(txData as any),
-            // HACK: TS can't prove that T is spreadable.
-            // Awaiting https://github.com/Microsoft/TypeScript/pull/13288 to be merged
-        } as any;
+            ...removeUndefinedProperties(txData),
+        };
         if (_.isUndefined(txDataWithDefaults.gas) && !_.isUndefined(estimateGasAsync)) {
-            txDataWithDefaults.gas = await estimateGasAsync(txDataWithDefaults as any);
+            txDataWithDefaults.gas = await estimateGasAsync(txDataWithDefaults);
         }
         return txDataWithDefaults;
     }

packages/connect/src/http_client.ts

@@ -38,7 +38,7 @@ const OPTS_TO_QUERY_FIELD_MAP = {
  * that implement the standard relayer API v0
  */
 export class HttpClient implements Client {
-    private _apiEndpointUrl: string;
+    private readonly _apiEndpointUrl: string;
     /**
      * Format parameters to be appended to http requests into query string form
      */

packages/connect/src/utils/type_converters.ts

@@ -6,12 +6,12 @@ export const typeConverters = {
         const bids = _.get(orderbook, 'bids', []);
         const asks = _.get(orderbook, 'asks', []);
         return {
-            bids: bids.map((order: any) => this.convertOrderStringFieldsToBigNumber(order)),
-            asks: asks.map((order: any) => this.convertOrderStringFieldsToBigNumber(order)),
+            bids: bids.map((order: any) => typeConverters.convertOrderStringFieldsToBigNumber(order)),
+            asks: asks.map((order: any) => typeConverters.convertOrderStringFieldsToBigNumber(order)),
         };
     },
     convertOrderStringFieldsToBigNumber(order: any): any {
-        return this.convertStringsFieldsToBigNumbers(order, [
+        return typeConverters.convertStringsFieldsToBigNumbers(order, [
             'makerTokenAmount',
             'takerTokenAmount',
             'makerFee',

packages/connect/src/ws_orderbook_channel.ts

@@ -15,9 +15,9 @@ import { orderbookChannelMessageParser } from './utils/orderbook_channel_message
  * that implements the standard relayer API v0
  */
 export class WebSocketOrderbookChannel implements OrderbookChannel {
-    private _client: WebSocket.w3cwebsocket;
-    private _handler: OrderbookChannelHandler;
-    private _subscriptionOptsList: OrderbookChannelSubscriptionOpts[] = [];
+    private readonly _client: WebSocket.w3cwebsocket;
+    private readonly _handler: OrderbookChannelHandler;
+    private readonly _subscriptionOptsList: OrderbookChannelSubscriptionOpts[] = [];
     /**
      * Instantiates a new WebSocketOrderbookChannel instance
      * @param   client               A WebSocket client

packages/connect/test/ws_orderbook_channel_test.ts

@@ -29,7 +29,7 @@ describe('WebSocketOrderbookChannel', () => {
     const websocketUrl = 'ws://localhost:8080';
     const openClient = new WebSocket.w3cwebsocket(websocketUrl);
     Sinon.stub(openClient, 'readyState').get(() => WebSocket.w3cwebsocket.OPEN);
-    Sinon.stub(openClient, 'send').callsFake(_.noop);
+    Sinon.stub(openClient, 'send').callsFake(_.noop.bind(_));
     const openOrderbookChannel = new WebSocketOrderbookChannel(openClient, emptyOrderbookChannelHandler);
     const subscriptionOpts = {
         baseTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',

packages/contract-wrappers/test/global_hooks.ts

@@ -7,7 +7,7 @@ before('migrate contracts', async function(): Promise<void> {
     // HACK: Since the migrations take longer then our global mocha timeout limit
     // we manually increase it for this before hook.
     const mochaTestTimeoutMs = 50000;
-    this.timeout(mochaTestTimeoutMs);
+    this.timeout(mochaTestTimeoutMs); // tslint:disable-line:no-invalid-this
     const txDefaults = {
         gas: devConstants.GAS_LIMIT,
         from: devConstants.TESTRPC_FIRST_ADDRESS,

packages/contracts/test/utils/asset_wrapper.ts

@@ -17,7 +17,7 @@ interface ProxyIdToAssetWrappers {
  * the logic that uses it does not need to care what standard a token belongs to.
  */
 export class AssetWrapper {
-    private _proxyIdToAssetWrappers: ProxyIdToAssetWrappers;
+    private readonly _proxyIdToAssetWrappers: ProxyIdToAssetWrappers;
     constructor(assetWrappers: AbstractAssetWrapper[]) {
         this._proxyIdToAssetWrappers = {};
         _.each(assetWrappers, assetWrapper => {

packages/contracts/test/utils/erc20_wrapper.ts

@@ -13,11 +13,11 @@ import { ERC20BalancesByOwner } from './types';
 import { txDefaults } from './web3_wrapper';
 
 export class ERC20Wrapper {
-    private _tokenOwnerAddresses: string[];
-    private _contractOwnerAddress: string;
-    private _web3Wrapper: Web3Wrapper;
-    private _provider: Provider;
-    private _dummyTokenContracts: DummyERC20TokenContract[];
+    private readonly _tokenOwnerAddresses: string[];
+    private readonly _contractOwnerAddress: string;
+    private readonly _web3Wrapper: Web3Wrapper;
+    private readonly _provider: Provider;
+    private readonly _dummyTokenContracts: DummyERC20TokenContract[];
     private _proxyContract?: ERC20ProxyContract;
     private _proxyIdIfExists?: string;
     constructor(provider: Provider, tokenOwnerAddresses: string[], contractOwnerAddress: string) {

packages/contracts/test/utils/erc721_wrapper.ts

@@ -13,11 +13,11 @@ import { ERC721TokenIdsByOwner } from './types';
 import { txDefaults } from './web3_wrapper';
 
 export class ERC721Wrapper {
-    private _tokenOwnerAddresses: string[];
-    private _contractOwnerAddress: string;
-    private _web3Wrapper: Web3Wrapper;
-    private _provider: Provider;
-    private _dummyTokenContracts: DummyERC721TokenContract[];
+    private readonly _tokenOwnerAddresses: string[];
+    private readonly _contractOwnerAddress: string;
+    private readonly _web3Wrapper: Web3Wrapper;
+    private readonly _provider: Provider;
+    private readonly _dummyTokenContracts: DummyERC721TokenContract[];
     private _proxyContract?: ERC721ProxyContract;
     private _proxyIdIfExists?: string;
     private _initialTokenIdsByOwner: ERC721TokenIdsByOwner = {};

packages/contracts/test/utils/exchange_wrapper.ts

@@ -11,9 +11,9 @@ import { orderUtils } from './order_utils';
 import { OrderInfo, SignedTransaction } from './types';
 
 export class ExchangeWrapper {
-    private _exchange: ExchangeContract;
-    private _web3Wrapper: Web3Wrapper;
-    private _logDecoder: LogDecoder;
+    private readonly _exchange: ExchangeContract;
+    private readonly _web3Wrapper: Web3Wrapper;
+    private readonly _logDecoder: LogDecoder;
     constructor(exchangeContract: ExchangeContract, provider: Provider) {
         this._exchange = exchangeContract;
         this._web3Wrapper = new Web3Wrapper(provider);

packages/contracts/test/utils/forwarder_wrapper.ts

@@ -18,10 +18,10 @@ const ZERO_AMOUNT = new BigNumber(0);
 const INSUFFICENT_ORDERS_FOR_MAKER_AMOUNT = 'Unable to satisfy makerAssetFillAmount with provided orders';
 
 export class ForwarderWrapper {
-    private _web3Wrapper: Web3Wrapper;
-    private _forwarderContract: ForwarderContract;
-    private _logDecoder: LogDecoder;
-    private _zrxAddress: string;
+    private readonly _web3Wrapper: Web3Wrapper;
+    private readonly _forwarderContract: ForwarderContract;
+    private readonly _logDecoder: LogDecoder;
+    private readonly _zrxAddress: string;
     private static _createOptimizedSellOrders(signedOrders: SignedOrder[]): MarketSellOrders {
         const marketSellOrders = formatters.createMarketSellOrders(signedOrders, ZERO_AMOUNT);
         const assetDataId = assetProxyUtils.decodeAssetDataId(signedOrders[0].makerAssetData);

packages/contracts/test/utils/log_decoder.ts

@@ -15,9 +15,9 @@ import { artifacts } from './artifacts';
 import { constants } from './constants';
 
 export class LogDecoder {
-    private _web3Wrapper: Web3Wrapper;
-    private _contractAddress: string;
-    private _abiDecoder: AbiDecoder;
+    private readonly _web3Wrapper: Web3Wrapper;
+    private readonly _contractAddress: string;
+    private readonly _abiDecoder: AbiDecoder;
     public static wrapLogBigNumbers(log: any): any {
         const argNames = _.keys(log.args);
         for (const argName of argNames) {

packages/contracts/test/utils/match_order_tester.ts

@@ -14,10 +14,10 @@ chaiSetup.configure();
 const expect = chai.expect;
 
 export class MatchOrderTester {
-    private _exchangeWrapper: ExchangeWrapper;
-    private _erc20Wrapper: ERC20Wrapper;
-    private _erc721Wrapper: ERC721Wrapper;
-    private _feeTokenAddress: string;
+    private readonly _exchangeWrapper: ExchangeWrapper;
+    private readonly _erc20Wrapper: ERC20Wrapper;
+    private readonly _erc721Wrapper: ERC721Wrapper;
+    private readonly _feeTokenAddress: string;
 
     /// @dev Compares a pair of ERC20 balances and a pair of ERC721 token owners.
     /// @param expectedNewERC20BalancesByOwner Expected ERC20 balances.

packages/contracts/test/utils/multi_sig_wrapper.ts

@@ -10,9 +10,9 @@ import { constants } from './constants';
 import { LogDecoder } from './log_decoder';
 
 export class MultiSigWrapper {
-    private _multiSig: MultiSigWalletContract;
-    private _web3Wrapper: Web3Wrapper;
-    private _logDecoder: LogDecoder;
+    private readonly _multiSig: MultiSigWalletContract;
+    private readonly _web3Wrapper: Web3Wrapper;
+    private readonly _logDecoder: LogDecoder;
     constructor(multiSigContract: MultiSigWalletContract, provider: Provider) {
         this._multiSig = multiSigContract;
         this._web3Wrapper = new Web3Wrapper(provider);

packages/contracts/test/utils/order_factory.ts

@@ -6,8 +6,8 @@ import { constants } from './constants';
 import { signingUtils } from './signing_utils';
 
 export class OrderFactory {
-    private _defaultOrderParams: Partial<Order>;
-    private _privateKey: Buffer;
+    private readonly _defaultOrderParams: Partial<Order>;
+    private readonly _privateKey: Buffer;
     constructor(privateKey: Buffer, defaultOrderParams: Partial<Order>) {
         this._defaultOrderParams = defaultOrderParams;
         this._privateKey = privateKey;

packages/contracts/test/utils/order_factory_from_scenario.ts

@@ -24,13 +24,13 @@ const FIVE_UNITS_FIVE_DECIMALS = new BigNumber(500_000);
 const ONE_NFT_UNIT = new BigNumber(1);
 
 export class OrderFactoryFromScenario {
-    private _userAddresses: string[];
-    private _zrxAddress: string;
-    private _nonZrxERC20EighteenDecimalTokenAddresses: string[];
-    private _erc20FiveDecimalTokenAddresses: string[];
-    private _erc721Token: DummyERC721TokenContract;
-    private _erc721Balances: ERC721TokenIdsByOwner;
-    private _exchangeAddress: string;
+    private readonly _userAddresses: string[];
+    private readonly _zrxAddress: string;
+    private readonly _nonZrxERC20EighteenDecimalTokenAddresses: string[];
+    private readonly _erc20FiveDecimalTokenAddresses: string[];
+    private readonly _erc721Token: DummyERC721TokenContract;
+    private readonly _erc721Balances: ERC721TokenIdsByOwner;
+    private readonly _exchangeAddress: string;
     constructor(
         userAddresses: string[],
         zrxAddress: string,

packages/contracts/test/utils/simple_asset_balance_and_proxy_allowance_fetcher.ts

@@ -4,7 +4,7 @@ import { BigNumber } from '@0xproject/utils';
 import { AssetWrapper } from './asset_wrapper';
 
 export class SimpleAssetBalanceAndProxyAllowanceFetcher implements AbstractBalanceAndProxyAllowanceFetcher {
-    private _assetWrapper: AssetWrapper;
+    private readonly _assetWrapper: AssetWrapper;
     constructor(assetWrapper: AssetWrapper) {
         this._assetWrapper = assetWrapper;
     }

packages/contracts/test/utils/simple_order_filled_cancelled_fetcher.ts

@@ -4,8 +4,8 @@ import { BigNumber } from '@0xproject/utils';
 import { ExchangeWrapper } from './exchange_wrapper';
 
 export class SimpleOrderFilledCancelledFetcher implements AbstractOrderFilledCancelledFetcher {
-    private _exchangeWrapper: ExchangeWrapper;
-    private _zrxAssetData: string;
+    private readonly _exchangeWrapper: ExchangeWrapper;
+    private readonly _zrxAssetData: string;
     constructor(exchange: ExchangeWrapper, zrxAssetData: string) {
         this._exchangeWrapper = exchange;
         this._zrxAssetData = zrxAssetData;

packages/contracts/test/utils/token_registry_wrapper.ts

@@ -8,8 +8,8 @@ import { Token } from './types';
 import { constants } from './constants';
 
 export class TokenRegWrapper {
-    private _tokenReg: TokenRegistryContract;
-    private _web3Wrapper: Web3Wrapper;
+    private readonly _tokenReg: TokenRegistryContract;
+    private readonly _web3Wrapper: Web3Wrapper;
     constructor(tokenRegContract: TokenRegistryContract, provider: Provider) {
         this._tokenReg = tokenRegContract;
         this._web3Wrapper = new Web3Wrapper(provider);

packages/contracts/test/utils/transaction_factory.ts

@@ -15,9 +15,9 @@ const EIP712_ZEROEX_TRANSACTION_SCHEMA: EIP712Schema = {
 };
 
 export class TransactionFactory {
-    private _signerBuff: Buffer;
-    private _exchangeAddress: string;
-    private _privateKey: Buffer;
+    private readonly _signerBuff: Buffer;
+    private readonly _exchangeAddress: string;
+    private readonly _privateKey: Buffer;
     constructor(privateKey: Buffer, exchangeAddress: string) {
         this._privateKey = privateKey;
         this._exchangeAddress = exchangeAddress;

packages/contracts/test/utils/web3_wrapper.ts

@@ -51,8 +51,10 @@ export const provider = web3Factory.getRpcProvider(providerConfigs);
 const isCoverageEnabled = env.parseBoolean(EnvVars.SolidityCoverage);
 const isProfilerEnabled = env.parseBoolean(EnvVars.SolidityProfiler);
 const isRevertTraceEnabled = env.parseBoolean(EnvVars.SolidityRevertTrace);
-const enabledSubproviderCount = _.filter([isCoverageEnabled, isProfilerEnabled, isRevertTraceEnabled], _.identity)
-    .length;
+const enabledSubproviderCount = _.filter(
+    [isCoverageEnabled, isProfilerEnabled, isRevertTraceEnabled],
+    _.identity.bind(_),
+).length;
 if (enabledSubproviderCount > 1) {
     throw new Error(`Only one of coverage, profiler, or revert trace subproviders can be enabled at a time`);
 }

packages/dev-utils/src/blockchain_lifecycle.ts

@@ -10,8 +10,8 @@ import * as _ from 'lodash';
 const MINIMUM_BLOCKS = 3;
 
 export class BlockchainLifecycle {
-    private _web3Wrapper: Web3Wrapper;
-    private _snapshotIdsStack: number[];
+    private readonly _web3Wrapper: Web3Wrapper;
+    private readonly _snapshotIdsStack: number[];
     private _addresses: string[] = [];
     private _nodeType: NodeType | undefined;
     constructor(web3Wrapper: Web3Wrapper) {