Event tracking for Token Detection V2 (#14441)

app/scripts/controllers/detect-tokens.js

@@ -6,6 +6,9 @@ import { MINUTE } from '../../../shared/constants/time';
 import { MAINNET_CHAIN_ID } from '../../../shared/constants/network';
 import { isTokenDetectionEnabledForNetwork } from '../../../shared/modules/network.utils';
 import { isEqualCaseInsensitive } from '../../../shared/modules/string-utils';
+import { TOKEN_STANDARDS } from '../../../ui/helpers/constants/common';
+import { ASSET_TYPES } from '../../../shared/constants/transaction';
+import { EVENT, EVENT_NAMES } from '../../../shared/constants/metametrics';
 
 // By default, poll every 3 minutes
 const DEFAULT_INTERVAL = MINUTE * 3;
@@ -26,6 +29,7 @@ export default class DetectTokensController {
    * @param config.tokenList
    * @param config.tokensController
    * @param config.assetsContractController
+   * @param config.trackMetaMetricsEvent
    */
   constructor({
     interval = DEFAULT_INTERVAL,
@@ -35,6 +39,7 @@ export default class DetectTokensController {
     tokenList,
     tokensController,
     assetsContractController = null,
+    trackMetaMetricsEvent,
   } = {}) {
     this.assetsContractController = assetsContractController;
     this.tokensController = tokensController;
@@ -51,6 +56,7 @@ export default class DetectTokensController {
     this.detectedTokens = process.env.TOKEN_DETECTION_V2
       ? this.tokensController?.state.detectedTokens
       : [];
+    this._trackMetaMetricsEvent = trackMetaMetricsEvent;
 
     preferences?.store.subscribe(({ selectedAddress, useTokenDetection }) => {
       if (
@@ -162,6 +168,7 @@ export default class DetectTokensController {
 
       let tokensWithBalance = [];
       if (process.env.TOKEN_DETECTION_V2) {
+        const eventTokensDetails = [];
         if (result) {
           const nonZeroTokenAddresses = Object.keys(result);
           for (const nonZeroTokenAddress of nonZeroTokenAddresses) {
@@ -172,6 +179,9 @@ export default class DetectTokensController {
               iconUrl,
               aggregators,
             } = tokenList[nonZeroTokenAddress];
+
+            eventTokensDetails.push(`${symbol} - ${address}`);
+
             tokensWithBalance.push({
               address,
               symbol,
@@ -180,7 +190,17 @@ export default class DetectTokensController {
               aggregators,
             });
           }
+
           if (tokensWithBalance.length > 0) {
+            this._trackMetaMetricsEvent({
+              event: EVENT_NAMES.TOKEN_DETECTED,
+              category: EVENT.CATEGORIES.WALLET,
+              properties: {
+                tokens: eventTokensDetails,
+                token_standard: TOKEN_STANDARDS.ERC20,
+                asset_type: ASSET_TYPES.TOKEN,
+              },
+            });
             await this.tokensController.addDetectedTokens(tokensWithBalance);
           }
         }

app/scripts/controllers/metametrics.js

@@ -571,6 +571,7 @@ export default class MetaMetricsController {
       [TRAITS.OPENSEA_API_ENABLED]: metamaskState.openSeaEnabled,
       [TRAITS.THREE_BOX_ENABLED]: metamaskState.threeBoxSyncingAllowed,
       [TRAITS.THEME]: metamaskState.theme || 'default',
+      [TRAITS.TOKEN_DETECTION_ENABLED]: metamaskState.useTokenDetection,
     };
 
     if (!this.previousTraits) {

app/scripts/controllers/metametrics.test.js

@@ -682,6 +682,7 @@ describe('MetaMetricsController', function () {
         threeBoxSyncingAllowed: false,
         useCollectibleDetection: false,
         theme: 'default',
+        useTokenDetection: true,
       });
 
       assert.deepEqual(traits, {
@@ -696,6 +697,7 @@ describe('MetaMetricsController', function () {
         [TRAITS.OPENSEA_API_ENABLED]: true,
         [TRAITS.THREE_BOX_ENABLED]: false,
         [TRAITS.THEME]: 'default',
+        [TRAITS.TOKEN_DETECTION_ENABLED]: true,
       });
     });
 
@@ -717,6 +719,7 @@ describe('MetaMetricsController', function () {
         threeBoxSyncingAllowed: false,
         useCollectibleDetection: false,
         theme: 'default',
+        useTokenDetection: true,
       });
 
       const updatedTraits = metaMetricsController._buildUserTraitsObject({
@@ -737,6 +740,7 @@ describe('MetaMetricsController', function () {
         threeBoxSyncingAllowed: false,
         useCollectibleDetection: false,
         theme: 'default',
+        useTokenDetection: true,
       });
 
       assert.deepEqual(updatedTraits, {
@@ -765,6 +769,7 @@ describe('MetaMetricsController', function () {
         threeBoxSyncingAllowed: false,
         useCollectibleDetection: true,
         theme: 'default',
+        useTokenDetection: true,
       });
 
       const updatedTraits = metaMetricsController._buildUserTraitsObject({
@@ -783,6 +788,7 @@ describe('MetaMetricsController', function () {
         threeBoxSyncingAllowed: false,
         useCollectibleDetection: true,
         theme: 'default',
+        useTokenDetection: true,
       });
 
       assert.equal(updatedTraits, null);

app/scripts/controllers/transactions/index.test.js

@@ -1470,7 +1470,7 @@ describe('Transaction Controller', function () {
             gas_edit_type: 'none',
             network: '42',
             referrer: ORIGIN_METAMASK,
-            source: 'user',
+            source: EVENT.SOURCE.TRANSACTION.USER,
             type: TRANSACTION_TYPES.SIMPLE_SEND,
             account_type: 'MetaMask',
             asset_type: ASSET_TYPES.NATIVE,
@@ -1549,7 +1549,7 @@ describe('Transaction Controller', function () {
             gas_edit_type: 'none',
             network: '42',
             referrer: ORIGIN_METAMASK,
-            source: 'user',
+            source: EVENT.SOURCE.TRANSACTION.USER,
             type: TRANSACTION_TYPES.SIMPLE_SEND,
             account_type: 'MetaMask',
             asset_type: ASSET_TYPES.NATIVE,
@@ -1638,7 +1638,7 @@ describe('Transaction Controller', function () {
             gas_edit_type: 'none',
             network: '42',
             referrer: 'other',
-            source: 'dapp',
+            source: EVENT.SOURCE.TRANSACTION.DAPP,
             type: TRANSACTION_TYPES.SIMPLE_SEND,
             account_type: 'MetaMask',
             asset_type: ASSET_TYPES.NATIVE,
@@ -1719,7 +1719,7 @@ describe('Transaction Controller', function () {
             gas_edit_type: 'none',
             network: '42',
             referrer: 'other',
-            source: 'dapp',
+            source: EVENT.SOURCE.TRANSACTION.DAPP,
             type: TRANSACTION_TYPES.SIMPLE_SEND,
             account_type: 'MetaMask',
             asset_type: ASSET_TYPES.NATIVE,
@@ -1800,7 +1800,7 @@ describe('Transaction Controller', function () {
           gas_edit_type: 'none',
           network: '42',
           referrer: 'other',
-          source: 'dapp',
+          source: EVENT.SOURCE.TRANSACTION.DAPP,
           type: TRANSACTION_TYPES.SIMPLE_SEND,
           account_type: 'MetaMask',
           asset_type: ASSET_TYPES.NATIVE,
@@ -1859,7 +1859,7 @@ describe('Transaction Controller', function () {
         properties: {
           network: '42',
           referrer: 'other',
-          source: 'dapp',
+          source: EVENT.SOURCE.TRANSACTION.DAPP,
           type: TRANSACTION_TYPES.SIMPLE_SEND,
           chain_id: '0x2a',
           eip_1559_version: '0',
@@ -1936,7 +1936,7 @@ describe('Transaction Controller', function () {
           gas_edit_type: 'none',
           network: '42',
           referrer: 'other',
-          source: 'dapp',
+          source: EVENT.SOURCE.TRANSACTION.DAPP,
           type: TRANSACTION_TYPES.SIMPLE_SEND,
           account_type: 'MetaMask',
           asset_type: ASSET_TYPES.NATIVE,

app/scripts/lib/rpc-method-middleware/handlers/add-ethereum-chain.js

@@ -265,7 +265,7 @@ async function addEthereumChainHandler(
         network: firstValidRPCUrl,
         symbol: ticker,
         block_explorer_url: firstValidBlockExplorerUrl,
-        source: 'dapp',
+        source: EVENT.SOURCE.TRANSACTION.DAPP,
       },
     });
 

app/scripts/metamask-controller.js

@@ -713,6 +713,9 @@ export default class MetamaskController extends EventEmitter {
           network: this.networkController,
           keyringMemStore: this.keyringController.memStore,
           tokenList: this.tokenListController,
+          trackMetaMetricsEvent: this.metaMetricsController.trackEvent.bind(
+            this.metaMetricsController,
+          ),
         }))
       : (this.detectTokensController = new DetectTokensController({
           preferences: this.preferencesController,

shared/constants/metametrics.js

@@ -178,6 +178,8 @@
  * @property {'three_box_enabled'} THREE_BOX_ENABLED - when 3box feature is
  *  toggled we identify the 3box_enabled trait
  * @property {'theme'} THEME - when the user's theme changes we identify the theme trait
+ * @property {'token_detection_enabled'} TOKEN_DETECTION_ENABLED - when token detection feature is toggled we
+ * identify the token_detection_enabled trait
  */
 
 /**
@@ -197,6 +199,7 @@ export const TRAITS = {
   OPENSEA_API_ENABLED: 'opensea_api_enabled',
   THREE_BOX_ENABLED: 'three_box_enabled',
   THEME: 'theme',
+  TOKEN_DETECTION_ENABLED: 'token_detection_enabled',
 };
 
 /**
@@ -222,6 +225,7 @@ export const TRAITS = {
  * @property {boolean} [three_box_enabled] - does the user have 3box sync
  *  enabled?
  * @property {string} [theme] - which theme the user has selected
+ * @property {boolean} [token_detection_enabled] - does the user have token detection is enabled?
  */
 
 // Mixpanel converts the zero address value to a truly anonymous event, which
@@ -265,10 +269,15 @@ export const REJECT_NOTFICIATION_CLOSE_SIG =
  */
 
 export const EVENT_NAMES = {
-  SIGNATURE_REQUESTED: 'Signature Requested',
   ENCRYPTION_PUBLIC_KEY_REQUESTED: 'Encryption Public Key Requested',
   DECRYPTION_REQUESTED: 'Decryption Requested',
   PERMISSIONS_REQUESTED: 'Permissions Requested',
+  SIGNATURE_REQUESTED: 'Signature Requested',
+  TOKEN_ADDED: 'Token Added',
+  TOKEN_DETECTED: 'Token Detected',
+  TOKEN_HIDDEN: 'Token Hidden',
+  TOKEN_IMPORT_CANCELED: 'Token Import Canceled',
+  TOKEN_IMPORT_CLICKED: 'Token Import Clicked',
 };
 
 export const EVENT = {
@@ -288,4 +297,25 @@ export const EVENT = {
     TRANSACTIONS: 'Transactions',
     WALLET: 'Wallet',
   },
+  SOURCE: {
+    SWAPS: {
+      MAIN_VIEW: 'Main View',
+      TOKEN_VIEW: 'Token View',
+    },
+    TRANSACTION: {
+      USER: 'user',
+      DAPP: 'dapp',
+    },
+    TOKEN: {
+      CUSTOM: 'custom',
+      DETECTED: 'detected',
+      DAPP: 'dapp',
+      LIST: 'list',
+    },
+  },
+  LOCATION: {
+    TOKEN_DETECTION: 'token_detection',
+    TOKEN_MENU: 'token_menu',
+    TOKEN_DETAILS: 'token_details',
+  },
 };

ui/components/app/asset-list/detetcted-tokens-link/detected-tokens-link.js

@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { useContext } from 'react';
 import { useSelector } from 'react-redux';
 import PropTypes from 'prop-types';
 import classNames from 'classnames';
@@ -7,11 +7,32 @@ import Box from '../../../ui/box/box';
 import Button from '../../../ui/button';
 import { useI18nContext } from '../../../../hooks/useI18nContext';
 import { getDetectedTokensInCurrentNetwork } from '../../../../selectors';
+import { MetaMetricsContext } from '../../../../contexts/metametrics';
+import {
+  EVENT,
+  EVENT_NAMES,
+} from '../../../../../shared/constants/metametrics';
 
 const DetectedTokensLink = ({ className = '', setShowDetectedTokens }) => {
   const t = useI18nContext();
+  const trackEvent = useContext(MetaMetricsContext);
+
   const detectedTokens = useSelector(getDetectedTokensInCurrentNetwork);
+  const detectedTokensDetails = detectedTokens.map(
+    ({ address, symbol }) => `${symbol} - ${address}`,
+  );
 
+  const onClick = () => {
+    setShowDetectedTokens(true);
+    trackEvent({
+      event: EVENT_NAMES.TOKEN_IMPORT_CLICKED,
+      category: EVENT.CATEGORIES.WALLET,
+      properties: {
+        source: EVENT.SOURCE.TOKEN.DETECTED,
+        tokens: detectedTokensDetails,
+      },
+    });
+  };
   return (
     <Box
       className={classNames('detected-tokens-link', className)}
@@ -20,7 +41,7 @@ const DetectedTokensLink = ({ className = '', setShowDetectedTokens }) => {
       <Button
         type="link"
         className="detected-tokens-link__link"
-        onClick={() => setShowDetectedTokens(true)}
+        onClick={onClick}
       >
         {t('numberOfNewTokensDetected', [detectedTokens.length])}
       </Button>

ui/components/app/asset-list/detetcted-tokens-link/detected-tokens-link.stories.js

@@ -0,0 +1,28 @@
+import React from 'react';
+import { Provider } from 'react-redux';
+
+import testData from '../../../../../.storybook/test-data';
+import configureStore from '../../../../store/store';
+import DetectedTokensLink from './detected-tokens-link';
+
+const store = configureStore(testData);
+
+export default {
+  title: 'Components/App/AssetList/DetectedTokensLink',
+  decorators: [(story) => <Provider store={store}>{story()}</Provider>],
+  id: __filename,
+  argTypes: {
+    setShowDetectedTokens: { control: 'func' },
+  },
+  args: {
+    setShowDetectedTokens: 'setShowDetectedTokensSpy',
+  },
+};
+
+const Template = (args) => {
+  return <DetectedTokensLink {...args} />;
+};
+
+export const DefaultStory = Template.bind({});
+
+DefaultStory.storyName = 'Default';

ui/components/app/asset-list/detetcted-tokens-link/detected-tokens-link.test.js

@@ -0,0 +1,32 @@
+import * as React from 'react';
+import {
+  renderWithProvider,
+  screen,
+  fireEvent,
+} from '../../../../../test/jest';
+import configureStore from '../../../../store/store';
+import testData from '../../../../../.storybook/test-data';
+
+import DetectedTokensLink from './detected-tokens-link';
+
+describe('DetectedTokensLink', () => {
+  let setShowDetectedTokensSpy;
+  const args = {};
+
+  beforeEach(() => {
+    setShowDetectedTokensSpy = jest.fn();
+    args.setShowDetectedTokens = setShowDetectedTokensSpy;
+  });
+
+  it('should render number of tokens detected link', () => {
+    const store = configureStore(testData);
+    renderWithProvider(<DetectedTokensLink {...args} />, store);
+
+    expect(
+      screen.getByText('3 new tokens found in this account'),
+    ).toBeInTheDocument();
+
+    fireEvent.click(screen.getByText('3 new tokens found in this account'));
+    expect(setShowDetectedTokensSpy).toHaveBeenCalled();
+  });
+});

ui/components/app/detected-token/detected-token-selection-popover/detected-token-selection-popover.js

@@ -1,8 +1,13 @@
-import React from 'react';
+import React, { useContext } from 'react';
 import PropTypes from 'prop-types';
 import { useSelector } from 'react-redux';
 
 import { useI18nContext } from '../../../../hooks/useI18nContext';
+import { MetaMetricsContext } from '../../../../contexts/metametrics';
+import {
+  EVENT,
+  EVENT_NAMES,
+} from '../../../../../shared/constants/metametrics';
 import { getDetectedTokensInCurrentNetwork } from '../../../../selectors';
 
 import Popover from '../../../ui/popover';
@@ -19,6 +24,7 @@ const DetectedTokenSelectionPopover = ({
   sortingBasedOnTokenSelection,
 }) => {
   const t = useI18nContext();
+  const trackEvent = useContext(MetaMetricsContext);
 
   const detectedTokens = useSelector(getDetectedTokensInCurrentNetwork);
   const { selected: selectedTokens = [] } = sortingBasedOnTokenSelection(
@@ -31,6 +37,17 @@ const DetectedTokenSelectionPopover = ({
 
   const onClose = () => {
     setShowDetectedTokens(false);
+    const eventTokensDetails = detectedTokens.map(
+      ({ address, symbol }) => `${symbol} - ${address}`,
+    );
+    trackEvent({
+      event: EVENT_NAMES.TOKEN_IMPORT_CANCELED,
+      category: EVENT.CATEGORIES.WALLET,
+      properties: {
+        source: EVENT.SOURCE.TOKEN.DETECTED,
+        tokens: eventTokensDetails,
+      },
+    });
   };
 
   const footer = (

ui/components/app/detected-token/detected-token.js

@@ -1,4 +1,4 @@
-import React, { useState } from 'react';
+import React, { useState, useContext } from 'react';
 import PropTypes from 'prop-types';
 import { useSelector, useDispatch } from 'react-redux';
 import { chain } from 'lodash';
@@ -9,7 +9,11 @@ import {
   setNewTokensImported,
 } from '../../../store/actions';
 import { getDetectedTokensInCurrentNetwork } from '../../../selectors';
+import { MetaMetricsContext } from '../../../contexts/metametrics';
 
+import { TOKEN_STANDARDS } from '../../../helpers/constants/common';
+import { ASSET_TYPES } from '../../../../shared/constants/transaction';
+import { EVENT, EVENT_NAMES } from '../../../../shared/constants/metametrics';
 import DetectedTokenSelectionPopover from './detected-token-selection-popover/detected-token-selection-popover';
 import DetectedTokenIgnoredPopover from './detected-token-ignored-popover/detected-token-ignored-popover';
 
@@ -26,8 +30,10 @@ const sortingBasedOnTokenSelection = (tokensDetected) => {
       .value()
   );
 };
+
 const DetectedToken = ({ setShowDetectedTokens }) => {
   const dispatch = useDispatch();
+  const trackEvent = useContext(MetaMetricsContext);
 
   const detectedTokens = useSelector(getDetectedTokensInCurrentNetwork);
 
@@ -42,21 +48,49 @@ const DetectedToken = ({ setShowDetectedTokens }) => {
     setShowDetectedTokenIgnoredPopover,
   ] = useState(false);
 
+  const importSelectedTokens = async (selectedTokens) => {
+    selectedTokens.forEach((importedToken) => {
+      trackEvent({
+        event: EVENT_NAMES.TOKEN_ADDED,
+        category: EVENT.CATEGORIES.WALLET,
+        sensitiveProperties: {
+          token_symbol: importedToken.symbol,
+          token_contract_address: importedToken.address,
+          token_decimal_precision: importedToken.decimals,
+          source: EVENT.SOURCE.TOKEN.DETECTED,
+          token_standard: TOKEN_STANDARDS.ERC20,
+          asset_type: ASSET_TYPES.TOKEN,
+        },
+      });
+    });
+    await dispatch(importTokens(selectedTokens));
+    const tokenSymbols = selectedTokens.map(({ symbol }) => symbol);
+    dispatch(setNewTokensImported(tokenSymbols.join(', ')));
+  };
+
   const handleClearTokensSelection = async () => {
-    // create a lodash chain on this object
     const {
-      selected: selectedTokens,
-      deselected: deSelectedTokens,
+      selected: selectedTokens = [],
+      deselected: deSelectedTokens = [],
     } = sortingBasedOnTokenSelection(tokensListDetected);
 
     if (deSelectedTokens.length < detectedTokens.length) {
-      await dispatch(ignoreTokens(deSelectedTokens));
-      await dispatch(importTokens(selectedTokens));
-      const tokenSymbols = selectedTokens.map(({ symbol }) => symbol);
-      dispatch(setNewTokensImported(tokenSymbols.join(', ')));
-    } else {
-      await dispatch(ignoreTokens(deSelectedTokens));
+      await importSelectedTokens(selectedTokens);
     }
+    const tokensDetailsList = deSelectedTokens.map(
+      ({ symbol, address }) => `${symbol} - ${address}`,
+    );
+    trackEvent({
+      event: EVENT_NAMES.TOKEN_HIDDEN,
+      category: EVENT.CATEGORIES.WALLET,
+      sensitiveProperties: {
+        tokens: tokensDetailsList,
+        location: EVENT.LOCATION.TOKEN_DETECTION,
+        token_standard: TOKEN_STANDARDS.ERC20,
+        asset_type: ASSET_TYPES.TOKEN,
+      },
+    });
+    await dispatch(ignoreTokens(deSelectedTokens));
     setShowDetectedTokens(false);
   };
 
@@ -71,17 +105,14 @@ const DetectedToken = ({ setShowDetectedTokens }) => {
   };
 
   const onImport = async () => {
-    // create a lodash chain on this object
-    const { selected: selectedTokens } = sortingBasedOnTokenSelection(
+    const { selected: selectedTokens = [] } = sortingBasedOnTokenSelection(
       tokensListDetected,
     );
 
     if (selectedTokens.length < detectedTokens.length) {
       setShowDetectedTokenIgnoredPopover(true);
     } else {
-      const tokenSymbols = selectedTokens.map(({ symbol }) => symbol);
-      await dispatch(importTokens(selectedTokens));
-      dispatch(setNewTokensImported(tokenSymbols.join(', ')));
+      await importSelectedTokens(selectedTokens);
       setShowDetectedTokens(false);
     }
   };

ui/components/app/wallet-overview/eth-overview.js

@@ -136,7 +136,7 @@ const EthOverview = ({ className }) => {
                   event: 'Swaps Opened',
                   category: EVENT.CATEGORIES.SWAPS,
                   properties: {
-                    source: 'Main View',
+                    source: EVENT.SOURCE.SWAPS.MAIN_VIEW,
                     active_currency: 'ETH',
                   },
                 });

ui/components/app/wallet-overview/token-overview.js

@@ -120,7 +120,7 @@ const TokenOverview = ({ className, token }) => {
                   event: 'Swaps Opened',
                   category: EVENT.CATEGORIES.SWAPS,
                   properties: {
-                    source: 'Token View',
+                    source: EVENT.SOURCE.SWAPS.TOKEN_VIEW,
                     active_currency: token.symbol,
                   },
                 });

ui/pages/add-collectible/add-collectible.js

@@ -27,6 +27,7 @@ import { getCollectiblesDetectionNoticeDismissed } from '../../ducks/metamask/me
 import CollectiblesDetectionNotice from '../../components/app/collectibles-detection-notice';
 import { MetaMetricsContext } from '../../contexts/metametrics';
 import { ASSET_TYPES } from '../../../shared/constants/transaction';
+import { EVENT, EVENT_NAMES } from '../../../shared/constants/metametrics';
 
 export default function AddCollectible() {
   const t = useI18nContext();
@@ -77,7 +78,7 @@ export default function AddCollectible() {
     );
 
     trackEvent({
-      event: 'Token Added',
+      event: EVENT_NAMES.TOKEN_ADDED,
       category: 'Wallet',
       sensitiveProperties: {
         token_contract_address: address,
@@ -85,7 +86,7 @@ export default function AddCollectible() {
         tokenId: tokenId.toString(),
         asset_type: ASSET_TYPES.COLLECTIBLE,
         token_standard: tokenDetails?.standard,
-        source: 'custom',
+        source: EVENT.SOURCE.TOKEN.CUSTOM,
       },
     });
 

ui/pages/confirm-add-suggested-token/confirm-add-suggested-token.js

@@ -14,7 +14,7 @@ import { isEqualCaseInsensitive } from '../../../shared/modules/string-utils';
 import { getSuggestedAssets } from '../../selectors';
 import { rejectWatchAsset, acceptWatchAsset } from '../../store/actions';
 import { TOKEN_STANDARDS } from '../../helpers/constants/common';
-import { EVENT } from '../../../shared/constants/metametrics';
+import { EVENT, EVENT_NAMES } from '../../../shared/constants/metametrics';
 import { ASSET_TYPES } from '../../../shared/constants/transaction';
 
 function getTokenName(name, symbol) {
@@ -115,14 +115,14 @@ const ConfirmAddSuggestedToken = () => {
         await dispatch(acceptWatchAsset(id));
 
         trackEvent({
-          event: 'Token Added',
+          event: EVENT_NAMES.TOKEN_ADDED,
           category: EVENT.CATEGORIES.WALLET,
           sensitiveProperties: {
             token_symbol: asset.symbol,
             token_contract_address: asset.address,
             token_decimal_precision: asset.decimals,
             unlisted: asset.unlisted,
-            source: 'dapp',
+            source: EVENT.SOURCE.TOKEN.DAPP,
             token_standard: TOKEN_STANDARDS.ERC20,
             asset_type: ASSET_TYPES.TOKEN,
           },

ui/pages/confirm-import-token/confirm-import-token.js

@@ -13,7 +13,8 @@ import { MetaMetricsContext } from '../../contexts/metametrics';
 import { getMostRecentOverviewPage } from '../../ducks/history/history';
 import { getPendingTokens } from '../../ducks/metamask/metamask';
 import { addTokens, clearPendingTokens } from '../../store/actions';
-import { EVENT } from '../../../shared/constants/metametrics';
+import { TOKEN_STANDARDS } from '../../helpers/constants/common';
+import { EVENT, EVENT_NAMES } from '../../../shared/constants/metametrics';
 import { ASSET_TYPES } from '../../../shared/constants/transaction';
 
 const getTokenName = (name, symbol) => {
@@ -37,15 +38,17 @@ const ConfirmImportToken = () => {
 
     addedTokenValues.forEach((pendingToken) => {
       trackEvent({
-        event: 'Token Added',
+        event: EVENT_NAMES.TOKEN_ADDED,
         category: EVENT.CATEGORIES.WALLET,
         sensitiveProperties: {
           token_symbol: pendingToken.symbol,
           token_contract_address: pendingToken.address,
           token_decimal_precision: pendingToken.decimals,
           unlisted: pendingToken.unlisted,
-          source: pendingToken.isCustom ? 'custom' : 'list',
-          token_standard: pendingToken.standard,
+          source: pendingToken.isCustom
+            ? EVENT.SOURCE.TOKEN.CUSTOM
+            : EVENT.SOURCE.TOKEN.LIST,
+          token_standard: TOKEN_STANDARDS.ERC20,
           asset_type: ASSET_TYPES.TOKEN,
         },
       });