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-rw-r--r--packages/instant/src/constants.ts1
-rw-r--r--packages/instant/src/util/asset.ts21
-rw-r--r--packages/instant/src/util/buy_quote_updater.ts7
-rw-r--r--packages/instant/test/util/asset.test.ts43
4 files changed, 66 insertions, 6 deletions
diff --git a/packages/instant/src/constants.ts b/packages/instant/src/constants.ts
index 22f0cb6a4..67558c84a 100644
--- a/packages/instant/src/constants.ts
+++ b/packages/instant/src/constants.ts
@@ -16,6 +16,7 @@ export const ONE_SECOND_MS = 1000;
export const ONE_MINUTE_MS = ONE_SECOND_MS * 60;
export const GIT_SHA = process.env.GIT_SHA;
export const NODE_ENV = process.env.NODE_ENV;
+export const SLIPPAGE_PERCENTAGE = 0.2;
export const NPM_PACKAGE_VERSION = process.env.NPM_PACKAGE_VERSION;
export const DEFAULT_UNKOWN_ASSET_NAME = '???';
export const ACCOUNT_UPDATE_INTERVAL_TIME_MS = ONE_SECOND_MS * 5;
diff --git a/packages/instant/src/util/asset.ts b/packages/instant/src/util/asset.ts
index faaeb7c22..b009a327f 100644
--- a/packages/instant/src/util/asset.ts
+++ b/packages/instant/src/util/asset.ts
@@ -1,8 +1,10 @@
-import { AssetBuyerError } from '@0x/asset-buyer';
+import { AssetBuyerError, InsufficientAssetLiquidityError } from '@0x/asset-buyer';
import { AssetProxyId, ObjectMap } from '@0x/types';
+import { BigNumber } from '@0x/utils';
+import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
-import { DEFAULT_UNKOWN_ASSET_NAME } from '../constants';
+import { BIG_NUMBER_ZERO, DEFAULT_UNKOWN_ASSET_NAME } from '../constants';
import { assetDataNetworkMapping } from '../data/asset_data_network_mapping';
import { Asset, AssetMetaData, ERC20Asset, Network, ZeroExInstantError } from '../types';
@@ -111,6 +113,21 @@ export const assetUtils = {
assetBuyerErrorMessage: (asset: ERC20Asset, error: Error): string | undefined => {
if (error.message === AssetBuyerError.InsufficientAssetLiquidity) {
const assetName = assetUtils.bestNameForAsset(asset, 'of this asset');
+ if (
+ error instanceof InsufficientAssetLiquidityError &&
+ error.amountAvailableToFill.greaterThan(BIG_NUMBER_ZERO)
+ ) {
+ const unitAmountAvailableToFill = Web3Wrapper.toUnitAmount(
+ error.amountAvailableToFill,
+ asset.metaData.decimals,
+ );
+ const roundedUnitAmountAvailableToFill = unitAmountAvailableToFill.round(2, BigNumber.ROUND_DOWN);
+
+ if (roundedUnitAmountAvailableToFill.greaterThan(BIG_NUMBER_ZERO)) {
+ return `There are only ${roundedUnitAmountAvailableToFill} ${assetName} available to buy`;
+ }
+ }
+
return `Not enough ${assetName} available`;
} else if (error.message === AssetBuyerError.InsufficientZrxLiquidity) {
return 'Not enough ZRX available';
diff --git a/packages/instant/src/util/buy_quote_updater.ts b/packages/instant/src/util/buy_quote_updater.ts
index 6191c92e3..37974e71c 100644
--- a/packages/instant/src/util/buy_quote_updater.ts
+++ b/packages/instant/src/util/buy_quote_updater.ts
@@ -5,6 +5,7 @@ import * as _ from 'lodash';
import { Dispatch } from 'redux';
import { oc } from 'ts-optchain';
+import { SLIPPAGE_PERCENTAGE } from '../constants';
import { Action, actions } from '../redux/actions';
import { AffiliateInfo, ERC20Asset, QuoteFetchOrigin } from '../types';
import { analytics } from '../util/analytics';
@@ -33,8 +34,12 @@ export const buyQuoteUpdater = {
}
const feePercentage = oc(options.affiliateInfo).feePercentage();
let newBuyQuote: BuyQuote | undefined;
+ const slippagePercentage = SLIPPAGE_PERCENTAGE;
try {
- newBuyQuote = await assetBuyer.getBuyQuoteAsync(asset.assetData, baseUnitValue, { feePercentage });
+ newBuyQuote = await assetBuyer.getBuyQuoteAsync(asset.assetData, baseUnitValue, {
+ feePercentage,
+ slippagePercentage,
+ });
} catch (error) {
const errorMessage = assetUtils.assetBuyerErrorMessage(asset, error);
diff --git a/packages/instant/test/util/asset.test.ts b/packages/instant/test/util/asset.test.ts
index fc4e4e2e4..402a556d5 100644
--- a/packages/instant/test/util/asset.test.ts
+++ b/packages/instant/test/util/asset.test.ts
@@ -1,5 +1,6 @@
-import { AssetBuyerError } from '@0x/asset-buyer';
+import { AssetBuyerError, BigNumber, InsufficientAssetLiquidityError } from '@0x/asset-buyer';
import { AssetProxyId, ObjectMap } from '@0x/types';
+import { Web3Wrapper } from '@0x/web3-wrapper';
import { Asset, AssetMetaData, ERC20Asset, ERC20AssetMetaData, Network, ZeroExInstantError } from '../../src/types';
import { assetUtils } from '../../src/util/asset';
@@ -19,6 +20,16 @@ const ZRX_ASSET: ERC20Asset = {
const META_DATA_MAP: ObjectMap<AssetMetaData> = {
[ZRX_ASSET_DATA]: ZRX_META_DATA,
};
+const WAX_ASSET: ERC20Asset = {
+ assetData: '0xf47261b000000000000000000000000039bb259f66e1c59d5abef88375979b4d20d98022',
+ metaData: {
+ assetProxyId: AssetProxyId.ERC20,
+ decimals: 8,
+ primaryColor: '#EDB740',
+ symbol: 'wax',
+ name: 'WAX',
+ },
+};
describe('assetDataUtil', () => {
describe('bestNameForAsset', () => {
@@ -47,13 +58,39 @@ describe('assetDataUtil', () => {
});
});
describe('assetBuyerErrorMessage', () => {
- it('should return message for InsufficientAssetLiquidity', () => {
+ it('should return message for generic InsufficientAssetLiquidity error', () => {
const insufficientAssetError = new Error(AssetBuyerError.InsufficientAssetLiquidity);
expect(assetUtils.assetBuyerErrorMessage(ZRX_ASSET, insufficientAssetError)).toEqual(
'Not enough ZRX available',
);
});
- it('should return message for InsufficientAssetLiquidity', () => {
+ describe('InsufficientAssetLiquidityError', () => {
+ it('should return custom message for token w/ 18 decimals', () => {
+ const amountAvailable = Web3Wrapper.toBaseUnitAmount(new BigNumber(20.059), 18);
+ expect(
+ assetUtils.assetBuyerErrorMessage(ZRX_ASSET, new InsufficientAssetLiquidityError(amountAvailable)),
+ ).toEqual('There are only 20.05 ZRX available to buy');
+ });
+ it('should return custom message for token w/ 18 decimals and small amount available', () => {
+ const amountAvailable = Web3Wrapper.toBaseUnitAmount(new BigNumber(0.01), 18);
+ expect(
+ assetUtils.assetBuyerErrorMessage(ZRX_ASSET, new InsufficientAssetLiquidityError(amountAvailable)),
+ ).toEqual('There are only 0.01 ZRX available to buy');
+ });
+ it('should return custom message for token w/ 8 decimals', () => {
+ const amountAvailable = Web3Wrapper.toBaseUnitAmount(new BigNumber(3), 8);
+ expect(
+ assetUtils.assetBuyerErrorMessage(WAX_ASSET, new InsufficientAssetLiquidityError(amountAvailable)),
+ ).toEqual('There are only 3 WAX available to buy');
+ });
+ it('should return generic message when amount available rounds to zero', () => {
+ const amountAvailable = Web3Wrapper.toBaseUnitAmount(new BigNumber(0.002), 18);
+ expect(
+ assetUtils.assetBuyerErrorMessage(ZRX_ASSET, new InsufficientAssetLiquidityError(amountAvailable)),
+ ).toEqual('Not enough ZRX available');
+ });
+ });
+ it('should return message for InsufficientZrxLiquidity', () => {
const insufficientZrxError = new Error(AssetBuyerError.InsufficientZrxLiquidity);
expect(assetUtils.assetBuyerErrorMessage(ZRX_ASSET, insufficientZrxError)).toEqual(
'Not enough ZRX available',
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 20:17:10 +0800