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-rw-r--r--packages/asset-buyer/src/asset_buyer.ts19
-rw-r--r--packages/asset-buyer/src/constants.ts4
2 files changed, 11 insertions, 12 deletions
diff --git a/packages/asset-buyer/src/asset_buyer.ts b/packages/asset-buyer/src/asset_buyer.ts
index fa1118e18..76b96427e 100644
--- a/packages/asset-buyer/src/asset_buyer.ts
+++ b/packages/asset-buyer/src/asset_buyer.ts
@@ -21,11 +21,6 @@ import { assert } from './utils/assert';
import { buyQuoteCalculator } from './utils/buy_quote_calculator';
import { orderFetcherResponseProcessor } from './utils/order_fetcher_response_processor';
-const SLIPPAGE_PERCENTAGE = 0.2; // 20% slippage protection, possibly move this into request interface
-const DEFAULT_ORDER_REFRESH_INTERVAL_MS = 10000; // 10 seconds
-const DEFAULT_FEE_PERCENTAGE = 0;
-const ETHER_TOKEN_DECIMALS = 18;
-
export class AssetBuyer {
public readonly provider: Provider;
public readonly assetData: string;
@@ -50,7 +45,7 @@ export class AssetBuyer {
orders: SignedOrder[],
feeOrders: SignedOrder[] = [],
networkId: number = constants.MAINNET_NETWORK_ID,
- orderRefreshIntervalMs: number = DEFAULT_ORDER_REFRESH_INTERVAL_MS,
+ orderRefreshIntervalMs: number = constants.DEFAULT_ORDER_REFRESH_INTERVAL_MS,
): AssetBuyer {
assert.isWeb3Provider('provider', provider);
assert.doesConformToSchema('orders', orders, schemas.signedOrdersSchema);
@@ -80,7 +75,7 @@ export class AssetBuyer {
assetData: string,
sraApiUrl: string,
networkId: number = constants.MAINNET_NETWORK_ID,
- orderRefreshIntervalMs: number = DEFAULT_ORDER_REFRESH_INTERVAL_MS,
+ orderRefreshIntervalMs: number = constants.DEFAULT_ORDER_REFRESH_INTERVAL_MS,
): AssetBuyer {
assert.isWeb3Provider('provider', provider);
assert.isHexString('assetData', assetData);
@@ -106,7 +101,7 @@ export class AssetBuyer {
tokenAddress: string,
sraApiUrl: string,
networkId: number = constants.MAINNET_NETWORK_ID,
- orderRefreshIntervalMs: number = DEFAULT_ORDER_REFRESH_INTERVAL_MS,
+ orderRefreshIntervalMs: number = constants.DEFAULT_ORDER_REFRESH_INTERVAL_MS,
): AssetBuyer {
assert.isWeb3Provider('provider', provider);
assert.isETHAddressHex('tokenAddress', tokenAddress);
@@ -138,7 +133,7 @@ export class AssetBuyer {
assetData: string,
orderFetcher: OrderFetcher,
networkId: number = constants.MAINNET_NETWORK_ID,
- orderRefreshIntervalMs: number = DEFAULT_ORDER_REFRESH_INTERVAL_MS,
+ orderRefreshIntervalMs: number = constants.DEFAULT_ORDER_REFRESH_INTERVAL_MS,
) {
assert.isWeb3Provider('provider', provider);
assert.isString('assetData', assetData);
@@ -165,7 +160,7 @@ export class AssetBuyer {
*/
public async getBuyQuoteAsync(
assetBuyAmount: BigNumber,
- feePercentage: number = DEFAULT_FEE_PERCENTAGE,
+ feePercentage: number = constants.DEFAULT_FEE_PERCENTAGE,
forceOrderRefresh: boolean = false,
): Promise<BuyQuote> {
assert.isBigNumber('assetBuyAmount', assetBuyAmount);
@@ -196,7 +191,7 @@ export class AssetBuyer {
ordersAndFillableAmounts,
assetBuyAmount,
feePercentage,
- SLIPPAGE_PERCENTAGE,
+ constants.DEFAULT_SLIPPAGE_PERCENTAGE,
);
return buyQuote;
}
@@ -244,7 +239,7 @@ export class AssetBuyer {
// TODO: critical
// update the forwarder wrapper to take in feePercentage as a number instead of a BigNumber, verify with Amir that this is being done correctly
const feePercentageBigNumber = !_.isUndefined(feePercentage)
- ? Web3Wrapper.toBaseUnitAmount(new BigNumber(1), ETHER_TOKEN_DECIMALS).mul(feePercentage)
+ ? Web3Wrapper.toBaseUnitAmount(new BigNumber(1), constants.ETHER_TOKEN_DECIMALS).mul(feePercentage)
: constants.ZERO_AMOUNT;
const txHash = await this._contractWrappers.forwarder.marketBuyOrdersWithEthAsync(
orders,
diff --git a/packages/asset-buyer/src/constants.ts b/packages/asset-buyer/src/constants.ts
index 5785e705b..e20bcc6ed 100644
--- a/packages/asset-buyer/src/constants.ts
+++ b/packages/asset-buyer/src/constants.ts
@@ -4,4 +4,8 @@ export const constants = {
ZERO_AMOUNT: new BigNumber(0),
NULL_ADDRESS: '0x0000000000000000000000000000000000000000',
MAINNET_NETWORK_ID: 1,
+ DEFAULT_SLIPPAGE_PERCENTAGE: 0.2, // 20% slippage protection
+ DEFAULT_ORDER_REFRESH_INTERVAL_MS: 10000, // 10 seconds
+ DEFAULT_FEE_PERCENTAGE: 0,
+ ETHER_TOKEN_DECIMALS: 18,
};