refactor features config

configs/app/features/account.ts

@@ -1,3 +1,5 @@
+import type { Feature } from './types';
+
 import stripTrailingSlash from 'lib/stripTrailingSlash';
 
 import app from '../app';
@@ -25,9 +27,26 @@ const logoutUrl = (() => {
   }
 })();
 
-export default Object.freeze({
-  title: 'My account',
-  isEnabled: getEnvValue(process.env.NEXT_PUBLIC_IS_ACCOUNT_SUPPORTED) === 'true',
-  authUrl,
-  logoutUrl,
-});
+const title = 'My account';
+
+const config: Feature<{ authUrl: string; logoutUrl: string }> = (() => {
+  if (
+    getEnvValue(process.env.NEXT_PUBLIC_IS_ACCOUNT_SUPPORTED) === 'true' &&
+    authUrl &&
+    logoutUrl
+  ) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      authUrl,
+      logoutUrl,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/addressVerification.ts

@@ -1,14 +1,29 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 import account from './account';
 import verifiedTokens from './verifiedTokens';
 
 const adminServiceApiHost = getEnvValue(process.env.NEXT_PUBLIC_ADMIN_SERVICE_API_HOST);
 
-export default Object.freeze({
-  title: 'Address verification in "My account"',
-  isEnabled: account.isEnabled && verifiedTokens.isEnabled && Boolean(adminServiceApiHost),
-  api: {
-    endpoint: adminServiceApiHost,
-    basePath: '',
-  },
-});
+const title = 'Address verification in "My account"';
+
+const config: Feature<{ api: { endpoint: string; basePath: string } }> = (() => {
+  if (account.isEnabled && verifiedTokens.isEnabled && adminServiceApiHost) {
+    return Object.freeze({
+      title: 'Address verification in "My account"',
+      isEnabled: true,
+      api: {
+        endpoint: adminServiceApiHost,
+        basePath: '',
+      },
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/adsBanner.ts

@@ -1,3 +1,4 @@
+import type { Feature } from './types';
 import type { AdButlerConfig } from 'types/client/adButlerConfig';
 import type { AdBannerProviders } from 'types/client/adProviders';
 
@@ -10,14 +11,50 @@ const provider: AdBannerProviders = (() => {
   return envValue && SUPPORTED_AD_BANNER_PROVIDERS.includes(envValue) ? envValue : 'slise';
 })();
 
-export default Object.freeze({
-  title: 'Banner ads',
-  isEnabled: provider !== 'none',
-  provider,
+const title = 'Banner ads';
+
+type AdsBannerFeaturePayload = {
+  provider: Exclude<AdBannerProviders, 'adbutler' | 'none'>;
+} | {
+  provider: 'adbutler';
   adButler: {
     config: {
-      desktop: parseEnvJson<AdButlerConfig>(getEnvValue(process.env.NEXT_PUBLIC_AD_ADBUTLER_CONFIG_DESKTOP)) ?? undefined,
-      mobile: parseEnvJson<AdButlerConfig>(getEnvValue(process.env.NEXT_PUBLIC_AD_ADBUTLER_CONFIG_MOBILE)) ?? undefined,
-    },
-  },
-});
+      desktop: AdButlerConfig;
+      mobile: AdButlerConfig;
+    };
+  };
+}
+
+const config: Feature<AdsBannerFeaturePayload> = (() => {
+  if (provider === 'adbutler') {
+    const desktopConfig = parseEnvJson<AdButlerConfig>(getEnvValue(process.env.NEXT_PUBLIC_AD_ADBUTLER_CONFIG_DESKTOP));
+    const mobileConfig = parseEnvJson<AdButlerConfig>(getEnvValue(process.env.NEXT_PUBLIC_AD_ADBUTLER_CONFIG_MOBILE));
+
+    if (desktopConfig && mobileConfig) {
+      return Object.freeze({
+        title,
+        isEnabled: true,
+        provider,
+        adButler: {
+          config: {
+            desktop: desktopConfig,
+            mobile: mobileConfig,
+          },
+        },
+      });
+    }
+  } else if (provider !== 'none') {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      provider,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/adsText.ts

@@ -1,3 +1,4 @@
+import type { Feature } from './types';
 import type { AdTextProviders } from 'types/client/adProviders';
 
 import { getEnvValue } from '../utils';
@@ -9,8 +10,21 @@ const provider: AdTextProviders = (() => {
   return envValue && SUPPORTED_AD_BANNER_PROVIDERS.includes(envValue) ? envValue as AdTextProviders : 'coinzilla';
 })();
 
-export default Object.freeze({
-  title: 'Text ads',
-  isEnabled: provider !== 'none',
-  provider,
-});
+const title = 'Text ads';
+
+const config: Feature<{ provider: AdTextProviders }> = (() => {
+  if (provider !== 'none') {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      provider,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/beaconChain.ts

@@ -1,9 +1,27 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
-export default Object.freeze({
-  title: 'Beacon chain',
-  isEnabled: getEnvValue(process.env.NEXT_PUBLIC_HAS_BEACON_CHAIN) === 'true',
-  currency: {
-    symbol: getEnvValue(process.env.NEXT_PUBLIC_BEACON_CHAIN_CURRENCY_SYMBOL) || getEnvValue(process.env.NEXT_PUBLIC_NETWORK_CURRENCY_SYMBOL),
-  },
-});
+const title = 'Beacon chain';
+
+const config: Feature<{ currency: { symbol: string } }> = (() => {
+  if (getEnvValue(process.env.NEXT_PUBLIC_HAS_BEACON_CHAIN) === 'true') {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      currency: {
+        symbol:
+          getEnvValue(process.env.NEXT_PUBLIC_BEACON_CHAIN_CURRENCY_SYMBOL) ||
+          getEnvValue(process.env.NEXT_PUBLIC_NETWORK_CURRENCY_SYMBOL) ||
+          '', // maybe we need some other default value here
+      },
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/blockchainInteraction.ts

@@ -1,11 +1,15 @@
+import type { Feature } from './types';
+
 import chain from '../chain';
 import { getEnvValue } from '../utils';
 
 const walletConnectProjectId = getEnvValue(process.env.NEXT_PUBLIC_WALLET_CONNECT_PROJECT_ID);
 
-export default Object.freeze({
-  title: 'Blockchain interaction (writing to contract, etc.)',
-  isEnabled: Boolean(
+const title = 'Blockchain interaction (writing to contract, etc.)';
+
+const config: Feature<{ walletConnect: { projectId: string } }> = (() => {
+
+  if (
     // all chain parameters are required for wagmi provider
     // @wagmi/chains/dist/index.d.ts
     chain.id &&
@@ -14,9 +18,21 @@ export default Object.freeze({
     chain.currency.symbol &&
     chain.currency.decimals &&
     chain.rpcUrl &&
-    walletConnectProjectId,
-  ),
-  walletConnect: {
-    projectId: walletConnectProjectId ?? '',
-  },
-});
+    walletConnectProjectId
+  ) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      walletConnect: {
+        projectId: walletConnectProjectId,
+      },
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/csvExport.ts

@@ -1,11 +1,23 @@
-import { getEnvValue } from '../utils';
+import type { Feature } from './types';
 
-const reCaptchaSiteKey = getEnvValue(process.env.NEXT_PUBLIC_RE_CAPTCHA_APP_SITE_KEY);
+import services from '../services';
 
-export default Object.freeze({
-  title: 'Export data to CSV file',
-  isEnabled: Boolean(reCaptchaSiteKey),
-  reCaptcha: {
-    siteKey: reCaptchaSiteKey ?? '',
-  },
-});
+const title = 'Export data to CSV file';
+
+const config: Feature<{ reCaptcha: { siteKey: string }}> = (() => {
+  if (services.reCaptcha.siteKey) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      reCaptcha: {
+        siteKey: services.reCaptcha.siteKey,
+      },
+    });
+  }
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/googleAnalytics.ts

@@ -1,9 +1,24 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const propertyId = getEnvValue(process.env.NEXT_PUBLIC_GOOGLE_ANALYTICS_PROPERTY_ID);
 
-export default Object.freeze({
-  title: 'Google analytics',
-  isEnabled: Boolean(propertyId),
-  propertyId,
-});
+const title = 'Google analytics';
+
+const config: Feature<{ propertyId: string }> = (() => {
+  if (propertyId) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      propertyId,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/graphqlApiDocs.ts

@@ -1,9 +1,17 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const defaultTxHash = getEnvValue(process.env.NEXT_PUBLIC_GRAPHIQL_TRANSACTION);
 
-export default Object.freeze({
-  title: 'GraphQL API documentation',
-  isEnabled: true,
-  defaultTxHash,
-});
+const title = 'GraphQL API documentation';
+
+const config: Feature<{ defaultTxHash: string | undefined }> = (() => {
+  return Object.freeze({
+    title,
+    isEnabled: true,
+    defaultTxHash,
+  });
+})();
+
+export default config;

configs/app/features/marketplace.ts

@@ -1,12 +1,31 @@
+import type { Feature } from './types';
+
 import chain from '../chain';
 import { getEnvValue } from '../utils';
 
 const configUrl = getEnvValue(process.env.NEXT_PUBLIC_MARKETPLACE_CONFIG_URL);
-const submitForm = getEnvValue(process.env.NEXT_PUBLIC_MARKETPLACE_SUBMIT_FORM);
+const submitFormUrl = getEnvValue(process.env.NEXT_PUBLIC_MARKETPLACE_SUBMIT_FORM);
 
-export default Object.freeze({
-  title: 'Marketplace',
-  isEnabled: Boolean(chain.rpcUrl && configUrl && submitForm),
-  configUrl: configUrl ?? '',
-  submitFormUrl: submitForm ?? '',
-});
+const title = 'Marketplace';
+
+const config: Feature<{ configUrl: string; submitFormUrl: string }> = (() => {
+  if (
+    chain.rpcUrl &&
+    configUrl &&
+    submitFormUrl
+  ) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      configUrl,
+      submitFormUrl,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/mixpanel.ts

@@ -1,9 +1,24 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const projectToken = getEnvValue(process.env.NEXT_PUBLIC_MIXPANEL_PROJECT_TOKEN);
 
-export default Object.freeze({
-  title: 'Mixpanel analytics',
-  isEnabled: Boolean(projectToken),
-  projectToken: projectToken ?? '',
-});
+const title = 'Mixpanel analytics';
+
+const config: Feature<{ projectToken: string }> = (() => {
+  if (projectToken) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      projectToken,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/restApiDocs.ts

@@ -1,9 +1,24 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const specUrl = getEnvValue(process.env.NEXT_PUBLIC_API_SPEC_URL);
 
-export default Object.freeze({
-  title: 'REST API documentation',
-  isEnabled: Boolean(specUrl),
-  specUrl,
-});
+const title = 'REST API documentation';
+
+const config: Feature<{ specUrl: string }> = (() => {
+  if (specUrl) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      specUrl,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/rollup.ts

@@ -1,8 +1,30 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
-export default Object.freeze({
-  title: 'Rollup (L2) chain',
-  isEnabled: getEnvValue(process.env.NEXT_PUBLIC_IS_L2_NETWORK) === 'true',
-  L1BaseUrl: getEnvValue(process.env.NEXT_PUBLIC_L1_BASE_URL) ?? '',
-  withdrawalUrl: getEnvValue(process.env.NEXT_PUBLIC_L2_WITHDRAWAL_URL) ?? '',
-});
+const title = 'Rollup (L2) chain';
+
+const config: Feature<{ L1BaseUrl: string; withdrawalUrl: string }> = (() => {
+  const L1BaseUrl = getEnvValue(process.env.NEXT_PUBLIC_L1_BASE_URL);
+  const withdrawalUrl = getEnvValue(process.env.NEXT_PUBLIC_L2_WITHDRAWAL_URL);
+
+  if (
+    getEnvValue(process.env.NEXT_PUBLIC_IS_L2_NETWORK) === 'true' &&
+    L1BaseUrl &&
+    withdrawalUrl
+  ) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      L1BaseUrl,
+      withdrawalUrl,
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/sentry.ts

@@ -1,13 +1,27 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const dsn = getEnvValue(process.env.NEXT_PUBLIC_SENTRY_DSN);
 
-// TODO @tom2drum check sentry setup
-export default Object.freeze({
-  title: 'Sentry error monitoring',
-  isEnabled: Boolean(dsn),
-  dsn,
-  environment: getEnvValue(process.env.NEXT_PUBLIC_APP_ENV) || getEnvValue(process.env.NODE_ENV),
-  cspReportUrl: getEnvValue(process.env.SENTRY_CSP_REPORT_URI),
-  instance: getEnvValue(process.env.NEXT_PUBLIC_APP_INSTANCE),
-});
+const title = 'Sentry error monitoring';
+
+const config: Feature<{ dsn: string; environment: string | undefined; cspReportUrl: string | undefined; instance: string | undefined }> = (() => {
+  if (dsn) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      dsn,
+      environment: getEnvValue(process.env.NEXT_PUBLIC_APP_ENV) || getEnvValue(process.env.NODE_ENV),
+      cspReportUrl: getEnvValue(process.env.SENTRY_CSP_REPORT_URI),
+      instance: getEnvValue(process.env.NEXT_PUBLIC_APP_INSTANCE),
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/sol2uml.ts

@@ -1,12 +1,27 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const apiEndpoint = getEnvValue(process.env.NEXT_PUBLIC_VISUALIZE_API_HOST);
 
-export default Object.freeze({
-  title: 'Solidity to UML diagrams',
-  isEnabled: Boolean(apiEndpoint),
-  api: {
-    endpoint: apiEndpoint,
-    basePath: '',
-  },
-});
+const title = 'Solidity to UML diagrams';
+
+const config: Feature<{ api: { endpoint: string; basePath: string } }> = (() => {
+  if (apiEndpoint) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      api: {
+        endpoint: apiEndpoint,
+        basePath: '',
+      },
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/stats.ts

@@ -1,12 +1,27 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const apiEndpoint = getEnvValue(process.env.NEXT_PUBLIC_STATS_API_HOST);
 
-export default Object.freeze({
-  title: 'Blockchain statistics',
-  isEnabled: Boolean(apiEndpoint),
-  api: {
-    endpoint: apiEndpoint,
-    basePath: '',
-  },
-});
+const title = 'Blockchain statistics';
+
+const config: Feature<{ api: { endpoint: string; basePath: string } }> = (() => {
+  if (apiEndpoint) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      api: {
+        endpoint: apiEndpoint,
+        basePath: '',
+      },
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/types.ts

@@ -0,0 +1,10 @@
+type FeatureEnabled<Payload extends Record<string, unknown> = Record<string, never>> = { title: string; isEnabled: true } & Payload;
+type FeatureDisabled = { title: string; isEnabled: false };
+
+export type Feature<Payload extends Record<string, unknown> = Record<string, never>> = FeatureEnabled<Payload> | FeatureDisabled;
+
+// typescript cannot properly resolve unions in nested objects - https://github.com/microsoft/TypeScript/issues/18758
+// so we use this little helper where it is needed
+export const getFeaturePayload = <Payload extends Record<string, unknown>>(feature: Feature<Payload>): Payload | undefined => {
+  return feature.isEnabled ? feature : undefined;
+};

configs/app/features/verifiedTokens.ts

@@ -1,12 +1,27 @@
+import type { Feature } from './types';
+
 import { getEnvValue } from '../utils';
 
 const contractInfoApiHost = getEnvValue(process.env.NEXT_PUBLIC_CONTRACT_INFO_API_HOST);
 
-export default Object.freeze({
-  title: 'Verified tokens info',
-  isEnabled: Boolean(contractInfoApiHost),
-  api: {
-    endpoint: contractInfoApiHost,
-    basePath: '',
-  },
-});
+const title = 'Verified tokens info';
+
+const config: Feature<{ api: { endpoint: string; basePath: string } }> = (() => {
+  if (contractInfoApiHost) {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      api: {
+        endpoint: contractInfoApiHost,
+        basePath: '',
+      },
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/app/features/web3Wallet.ts

@@ -1,3 +1,4 @@
+import type { Feature } from './types';
 import type { WalletType } from 'types/client/wallets';
 
 import { getEnvValue } from '../utils';
@@ -12,12 +13,25 @@ const defaultWallet = ((): WalletType => {
   return envValue && SUPPORTED_WALLETS.includes(envValue) ? envValue : 'metamask';
 })();
 
-export default Object.freeze({
-  title: 'Web3 wallet integration (add token or network to the wallet)',
-  isEnabled: defaultWallet !== 'none',
-  defaultWallet,
-  addToken: {
-    isDisabled: getEnvValue(process.env.NEXT_PUBLIC_WEB3_DISABLE_ADD_TOKEN_TO_WALLET) === 'true',
-  },
-  addNetwork: {},
-});
+const title = 'Web3 wallet integration (add token or network to the wallet)';
+
+const config: Feature<{ defaultWallet: Exclude<WalletType, 'none'>; addToken: { isDisabled: boolean }}> = (() => {
+  if (defaultWallet !== 'none') {
+    return Object.freeze({
+      title,
+      isEnabled: true,
+      defaultWallet,
+      addToken: {
+        isDisabled: getEnvValue(process.env.NEXT_PUBLIC_WEB3_DISABLE_ADD_TOKEN_TO_WALLET) === 'true',
+      },
+      addNetwork: {},
+    });
+  }
+
+  return Object.freeze({
+    title,
+    isEnabled: false,
+  });
+})();
+
+export default config;

configs/sentry/react.ts

@@ -3,59 +3,70 @@ import { BrowserTracing } from '@sentry/tracing';
 
 import appConfig from 'configs/app';
 
-export const config: Sentry.BrowserOptions = {
-  environment: appConfig.features.sentry.environment,
-  dsn: appConfig.features.sentry.dsn,
-  release: process.env.NEXT_PUBLIC_GIT_TAG || process.env.NEXT_PUBLIC_GIT_COMMIT_SHA,
-  integrations: [ new BrowserTracing() ],
-  // We recommend adjusting this value in production, or using tracesSampler
-  // for finer control
-  tracesSampleRate: 1.0,
+const feature = appConfig.features.sentry;
 
-  // error filtering settings
-  // were taken from here - https://docs.sentry.io/platforms/node/guides/azure-functions/configuration/filtering/#decluttering-sentry
-  ignoreErrors: [
-    // Random plugins/extensions
-    'top.GLOBALS',
-    // See: http://blog.errorception.com/2012/03/tale-of-unfindable-js-error.html
-    'originalCreateNotification',
-    'canvas.contentDocument',
-    'MyApp_RemoveAllHighlights',
-    'http://tt.epicplay.com',
-    'Can\'t find variable: ZiteReader',
-    'jigsaw is not defined',
-    'ComboSearch is not defined',
-    'http://loading.retry.widdit.com/',
-    'atomicFindClose',
-    // Facebook borked
-    'fb_xd_fragment',
-    // ISP "optimizing" proxy - `Cache-Control: no-transform` seems to reduce this. (thanks @acdha)
-    // See http://stackoverflow.com/questions/4113268/how-to-stop-javascript-injection-from-vodafone-proxy
-    'bmi_SafeAddOnload',
-    'EBCallBackMessageReceived',
-    // See http://toolbar.conduit.com/Developer/HtmlAndGadget/Methods/JSInjection.aspx
-    'conduitPage',
-    // Generic error code from errors outside the security sandbox
-    'Script error.',
-  ],
-  denyUrls: [
-    // Facebook flakiness
-    /graph\.facebook\.com/i,
-    // Facebook blocked
-    /connect\.facebook\.net\/en_US\/all\.js/i,
-    // Woopra flakiness
-    /eatdifferent\.com\.woopra-ns\.com/i,
-    /static\.woopra\.com\/js\/woopra\.js/i,
-    // Chrome extensions
-    /extensions\//i,
-    /^chrome:\/\//i,
-    // Other plugins
-    /127\.0\.0\.1:4001\/isrunning/i, // Cacaoweb
-    /webappstoolbarba\.texthelp\.com\//i,
-    /metrics\.itunes\.apple\.com\.edgesuite\.net\//i,
-  ],
-};
+export const config: Sentry.BrowserOptions | undefined = (() => {
+  if (!feature.isEnabled) {
+    return;
+  }
+
+  return {
+    environment: feature.environment,
+    dsn: feature.dsn,
+    release: process.env.NEXT_PUBLIC_GIT_TAG || process.env.NEXT_PUBLIC_GIT_COMMIT_SHA,
+    integrations: [ new BrowserTracing() ],
+    // We recommend adjusting this value in production, or using tracesSampler
+    // for finer control
+    tracesSampleRate: 1.0,
+
+    // error filtering settings
+    // were taken from here - https://docs.sentry.io/platforms/node/guides/azure-functions/configuration/filtering/#decluttering-sentry
+    ignoreErrors: [
+      // Random plugins/extensions
+      'top.GLOBALS',
+      // See: http://blog.errorception.com/2012/03/tale-of-unfindable-js-error.html
+      'originalCreateNotification',
+      'canvas.contentDocument',
+      'MyApp_RemoveAllHighlights',
+      'http://tt.epicplay.com',
+      'Can\'t find variable: ZiteReader',
+      'jigsaw is not defined',
+      'ComboSearch is not defined',
+      'http://loading.retry.widdit.com/',
+      'atomicFindClose',
+      // Facebook borked
+      'fb_xd_fragment',
+      // ISP "optimizing" proxy - `Cache-Control: no-transform` seems to reduce this. (thanks @acdha)
+      // See http://stackoverflow.com/questions/4113268/how-to-stop-javascript-injection-from-vodafone-proxy
+      'bmi_SafeAddOnload',
+      'EBCallBackMessageReceived',
+      // See http://toolbar.conduit.com/Developer/HtmlAndGadget/Methods/JSInjection.aspx
+      'conduitPage',
+      // Generic error code from errors outside the security sandbox
+      'Script error.',
+    ],
+    denyUrls: [
+      // Facebook flakiness
+      /graph\.facebook\.com/i,
+      // Facebook blocked
+      /connect\.facebook\.net\/en_US\/all\.js/i,
+      // Woopra flakiness
+      /eatdifferent\.com\.woopra-ns\.com/i,
+      /static\.woopra\.com\/js\/woopra\.js/i,
+      // Chrome extensions
+      /extensions\//i,
+      /^chrome:\/\//i,
+      // Other plugins
+      /127\.0\.0\.1:4001\/isrunning/i, // Cacaoweb
+      /webappstoolbarba\.texthelp\.com\//i,
+      /metrics\.itunes\.apple\.com\.edgesuite\.net\//i,
+    ],
+  };
+})();
 
 export function configureScope(scope: Sentry.Scope) {
-  scope.setTag('app_instance', appConfig.features.sentry.instance);
+  if (!feature.isEnabled) {
+    return;
+  }
+  scope.setTag('app_instance', feature.instance);
 }

lib/api/resources.ts

@@ -1,3 +1,4 @@
+import { getFeaturePayload } from 'configs/app/features/types';
 import type {
   UserInfo,
   CustomAbis,
@@ -111,58 +112,58 @@ export const RESOURCES = {
   address_verification: {
     path: '/api/v1/chains/:chainId/verified-addresses:type',
     pathParams: [ 'chainId' as const, 'type' as const ],
-    endpoint: config.features.verifiedTokens.api.endpoint,
-    basePath: config.features.verifiedTokens.api.basePath,
+    endpoint: getFeaturePayload(config.features.verifiedTokens)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.verifiedTokens)?.api.basePath,
     needAuth: true,
   },
 
   verified_addresses: {
     path: '/api/v1/chains/:chainId/verified-addresses',
     pathParams: [ 'chainId' as const ],
-    endpoint: config.features.verifiedTokens.api.endpoint,
-    basePath: config.features.verifiedTokens.api.basePath,
+    endpoint: getFeaturePayload(config.features.verifiedTokens)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.verifiedTokens)?.api.basePath,
     needAuth: true,
   },
 
   token_info_applications_config: {
     path: '/api/v1/chains/:chainId/token-info-submissions/selectors',
     pathParams: [ 'chainId' as const ],
-    endpoint: config.features.addressVerification.api.endpoint,
-    basePath: config.features.addressVerification.api.basePath,
+    endpoint: getFeaturePayload(config.features.addressVerification)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.addressVerification)?.api.basePath,
     needAuth: true,
   },
 
   token_info_applications: {
     path: '/api/v1/chains/:chainId/token-info-submissions/:id?',
     pathParams: [ 'chainId' as const, 'id' as const ],
-    endpoint: config.features.addressVerification.api.endpoint,
-    basePath: config.features.addressVerification.api.basePath,
+    endpoint: getFeaturePayload(config.features.addressVerification)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.addressVerification)?.api.basePath,
     needAuth: true,
   },
 
   // STATS
   stats_counters: {
     path: '/api/v1/counters',
-    endpoint: config.features.stats.api.endpoint,
-    basePath: config.features.stats.api.basePath,
+    endpoint: getFeaturePayload(config.features.stats)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.stats)?.api.basePath,
   },
   stats_lines: {
     path: '/api/v1/lines',
-    endpoint: config.features.stats.api.endpoint,
-    basePath: config.features.stats.api.basePath,
+    endpoint: getFeaturePayload(config.features.stats)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.stats)?.api.basePath,
   },
   stats_line: {
     path: '/api/v1/lines/:id',
     pathParams: [ 'id' as const ],
-    endpoint: config.features.stats.api.endpoint,
-    basePath: config.features.stats.api.basePath,
+    endpoint: getFeaturePayload(config.features.stats)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.stats)?.api.basePath,
   },
 
   // VISUALIZATION
   visualize_sol2uml: {
     path: '/api/v1/solidity\\:visualize-contracts',
-    endpoint: config.features.sol2uml.api.endpoint,
-    basePath: config.features.sol2uml.api.basePath,
+    endpoint: getFeaturePayload(config.features.sol2uml)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.sol2uml)?.api.basePath,
   },
 
   // BLOCKS, TXS
@@ -345,8 +346,8 @@ export const RESOURCES = {
   token_verified_info: {
     path: '/api/v1/chains/:chainId/token-infos/:hash',
     pathParams: [ 'chainId' as const, 'hash' as const ],
-    endpoint: config.features.verifiedTokens.api.endpoint,
-    basePath: config.features.verifiedTokens.api.basePath,
+    endpoint: getFeaturePayload(config.features.verifiedTokens)?.api.endpoint,
+    basePath: getFeaturePayload(config.features.verifiedTokens)?.api.basePath,
   },
   token_counters: {
     path: '/api/v2/tokens/:hash/counters',

lib/csp/policies/ad.ts

@@ -19,7 +19,7 @@ export function ad(): CspDev.DirectiveDescriptor {
       'coinzillatag.com',
       'servedbyadbutler.com',
       `'sha256-${ Base64.stringify(sha256(connectAdbutler)) }'`,
-      `'sha256-${ Base64.stringify(sha256(placeAd)) }'`,
+      `'sha256-${ Base64.stringify(sha256(placeAd ?? '')) }'`,
       '*.slise.xyz',
     ],
     'img-src': [

lib/csp/policies/app.ts

@@ -1,5 +1,7 @@
 import type CspDev from 'csp-dev';
 
+import { getFeaturePayload } from 'configs/app/features/types';
+
 import config from 'configs/app';
 
 import { KEY_WORDS } from '../utils';
@@ -7,9 +9,8 @@ import { KEY_WORDS } from '../utils';
 const MAIN_DOMAINS = [
   `*.${ config.app.host }`,
   config.app.host,
-  config.features.sol2uml.api.endpoint,
+  getFeaturePayload(config.features.sol2uml)?.api.endpoint,
 ].filter(Boolean);
-// eslint-disable-next-line no-restricted-properties
 
 export function app(): CspDev.DirectiveDescriptor {
   return {
@@ -30,10 +31,10 @@ export function app(): CspDev.DirectiveDescriptor {
       // APIs
       config.api.endpoint,
       config.api.socket,
-      config.features.stats.api.endpoint,
-      config.features.sol2uml.api.endpoint,
-      config.features.verifiedTokens.api.endpoint,
-      config.features.addressVerification.api.endpoint,
+      getFeaturePayload(config.features.stats)?.api.endpoint,
+      getFeaturePayload(config.features.sol2uml)?.api.endpoint,
+      getFeaturePayload(config.features.verifiedTokens)?.api.endpoint,
+      getFeaturePayload(config.features.addressVerification)?.api.endpoint,
 
       // chain RPC server
       config.chain.rpcUrl,
@@ -108,10 +109,17 @@ export function app(): CspDev.DirectiveDescriptor {
       '*',
     ],
 
-    ...(config.features.sentry.isEnabled && config.features.sentry.cspReportUrl && !config.app.isDev ? {
-      'report-uri': [
-        config.features.sentry.cspReportUrl,
-      ],
-    } : {}),
+    ...((() => {
+      const sentryFeature = config.features.sentry;
+      if (!sentryFeature.isEnabled || !sentryFeature.cspReportUrl || config.app.isDev) {
+        return {};
+      }
+
+      return {
+        'report-uri': [
+          sentryFeature.cspReportUrl,
+        ],
+      };
+    })()),
   };
 }

lib/hooks/useConfigSentry.tsx

@@ -5,6 +5,10 @@ import { config, configureScope } from 'configs/sentry/react';
 
 export default function useConfigSentry() {
   React.useEffect(() => {
+    if (!config) {
+      return;
+    }
+
     // gotta init sentry in browser
     Sentry.init(config);
     Sentry.configureScope(configureScope);

lib/hooks/useIsAccountActionAllowed.tsx

@@ -14,6 +14,10 @@ export default function useIsAccountActionAllowed() {
   const loginUrl = useLoginUrl();
 
   return React.useCallback(() => {
+    if (!loginUrl) {
+      return false;
+    }
+
     if (!isAuth) {
       window.location.assign(loginUrl);
       return false;

lib/hooks/useLoginUrl.tsx

@@ -3,7 +3,11 @@ import { route } from 'nextjs-routes';
 
 import config from 'configs/app';
 
+const feature = config.features.account;
+
 export default function useLoginUrl() {
   const router = useRouter();
-  return config.features.account.authUrl + route({ pathname: '/auth/auth0', query: { path: router.asPath } });
+  return feature.isEnabled ?
+    feature.authUrl + route({ pathname: '/auth/auth0', query: { path: router.asPath } }) :
+    undefined;
 }

lib/hooks/useRedirectForInvalidAuthToken.tsx

@@ -18,7 +18,7 @@ export default function useRedirectForInvalidAuthToken() {
     if (errorStatus === 401) {
       const apiToken = cookies.get(cookies.NAMES.API_TOKEN);
 
-      if (apiToken) {
+      if (apiToken && loginUrl) {
         Sentry.captureException(new Error('Invalid api token'), { tags: { source: 'invalid_api_token' } });
         window.location.assign(loginUrl);
       }

lib/mixpanel/useInit.tsx

@@ -19,7 +19,8 @@ export default function useMixpanelInit() {
 
   React.useEffect(() => {
     isGoogleAnalyticsLoaded().then((isGALoaded) => {
-      if (!config.features.mixpanel.isEnabled) {
+      const feature = config.features.mixpanel;
+      if (!feature.isEnabled) {
         return;
       }
 
@@ -30,7 +31,7 @@ export default function useMixpanelInit() {
       };
       const isAuth = Boolean(cookies.get(cookies.NAMES.API_TOKEN));
 
-      mixpanel.init(config.features.mixpanel.projectToken, mixpanelConfig);
+      mixpanel.init(feature.projectToken, mixpanelConfig);
       mixpanel.register({
         'Chain id': config.chain.id,
         Environment: config.app.isDev ? 'Dev' : 'Prod',

lib/next/middlewares/account.ts

@@ -3,12 +3,12 @@ import { NextResponse } from 'next/server';
 import { route } from 'nextjs-routes';
 
 import config from 'configs/app';
-import { httpLogger } from 'lib/api/logger';
 import { DAY } from 'lib/consts';
 import * as cookies from 'lib/cookies';
 
 export function account(req: NextRequest) {
-  if (!config.features.account.isEnabled) {
+  const feature = config.features.account;
+  if (!feature.isEnabled) {
     return;
   }
 
@@ -24,7 +24,7 @@ export function account(req: NextRequest) {
     const isProfileRoute = req.nextUrl.pathname.includes('/auth/profile');
 
     if ((isAccountRoute || isProfileRoute)) {
-      const authUrl = config.features.account.authUrl + route({ pathname: '/auth/auth0', query: { path: req.nextUrl.pathname } });
+      const authUrl = feature.authUrl + route({ pathname: '/auth/auth0', query: { path: req.nextUrl.pathname } });
       return NextResponse.redirect(authUrl);
     }
   }
@@ -33,20 +33,11 @@ export function account(req: NextRequest) {
   if (req.cookies.get(cookies.NAMES.INVALID_SESSION)) {
     // if user has both cookies, make redirect to logout
     if (apiTokenCookie) {
-      // temporary solution
-      // TODO check app for integrity https://github.com/blockscout/frontend/issues/1028 and make typescript happy here
-      if (!config.features.account.logoutUrl) {
-        httpLogger.logger.error({
-          message: 'Logout URL is not configured',
-        });
-        return;
-      }
-
       // yes, we could have checked that the current URL is not the logout URL, but we hadn't
       // logout URL is always external URL in auth0.com sub-domain
       // at least we hope so
 
-      const res = NextResponse.redirect(config.features.account.logoutUrl);
+      const res = NextResponse.redirect(feature.logoutUrl);
       res.cookies.delete(cookies.NAMES.CONFIRM_EMAIL_PAGE_VIEWED); // reset cookie to show email verification page again
 
       return res;

lib/web3/useProvider.tsx

@@ -5,11 +5,13 @@ import 'wagmi/window';
 
 import config from 'configs/app';
 
+const feature = config.features.web3Wallet;
+
 export default function useProvider() {
   const [ provider, setProvider ] = React.useState<WindowProvider>();
 
   React.useEffect(() => {
-    if (!('ethereum' in window && window.ethereum) || !config.features.web3Wallet.isEnabled) {
+    if (!('ethereum' in window && window.ethereum) || !feature.isEnabled) {
       return;
     }
 
@@ -18,11 +20,11 @@ export default function useProvider() {
     const providers = Array.isArray(window.ethereum.providers) ? window.ethereum.providers : [ window.ethereum ];
 
     providers.forEach(async(provider) => {
-      if (config.features.web3Wallet.defaultWallet === 'coinbase' && provider.isCoinbaseWallet) {
+      if (feature.defaultWallet === 'coinbase' && provider.isCoinbaseWallet) {
         return setProvider(provider);
       }
 
-      if (config.features.web3Wallet.defaultWallet === 'metamask' && provider.isMetaMask) {
+      if (feature.defaultWallet === 'metamask' && provider.isMetaMask) {
         return setProvider(provider);
       }
     });

playwright/utils/buildApiUrl.ts

@@ -6,6 +6,6 @@ import { RESOURCES } from 'lib/api/resources';
 export default function buildApiUrl<R extends ResourceName>(resourceName: R, pathParams?: ResourcePathParams<R>) {
   const resource = RESOURCES[resourceName];
   const defaultApi = 'https://' + process.env.NEXT_PUBLIC_API_HOST + ':' + process.env.NEXT_PUBLIC_API_PORT;
-  const origin = 'endpoint' in resource ? resource.endpoint + resource.basePath : defaultApi;
+  const origin = 'endpoint' in resource && resource.endpoint ? resource.endpoint + (resource.basePath ?? '') : defaultApi;
   return origin + compile(resource.path)(pathParams);
 }

ui/apiDocs/SwaggerUI.tsx

@@ -13,6 +13,8 @@ import ContentLoader from 'ui/shared/ContentLoader';
 
 import 'swagger-ui-react/swagger-ui.css';
 
+const feature = config.features.restApiDocs;
+
 const DEFAULT_SERVER = 'blockscout.com/poa/core';
 
 const NeverShowInfoPlugin = () => {
@@ -65,10 +67,14 @@ const SwaggerUI = () => {
     return req;
   }, []);
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <Box sx={ swaggerStyle }>
       <SwaggerUIReact
-        url={ config.features.restApiDocs.specUrl }
+        url={ feature.specUrl }
         plugins={ [ NeverShowInfoPlugin ] }
         requestInterceptor={ reqInterceptor }
       />

ui/csvExport/CsvExportFormReCaptcha.tsx

@@ -42,7 +42,9 @@ const CsvExportFormReCaptcha = ({ formApi }: Props) => {
     formApi.setError('reCaptcha', { type: 'required' });
   }, [ formApi ]);
 
-  if (!config.features.csvExport.isEnabled) {
+  const feature = config.features.csvExport;
+
+  if (!feature.isEnabled) {
     return (
       <Alert status="error">
         CSV export is not available at the moment since reCaptcha is not configured for this application.
@@ -55,7 +57,7 @@ const CsvExportFormReCaptcha = ({ formApi }: Props) => {
     <ReCaptcha
       className="recaptcha"
       ref={ ref }
-      sitekey={ config.features.csvExport.reCaptcha.siteKey }
+      sitekey={ feature.reCaptcha.siteKey }
       onChange={ handleReCaptchaChange }
       onExpired={ handleReCaptchaExpire }
     />

ui/graphQL/GraphQL.tsx

@@ -8,6 +8,8 @@ import buildUrl from 'lib/api/buildUrl';
 import 'graphiql/graphiql.css';
 import isBrowser from 'lib/isBrowser';
 
+const feature = config.features.graphqlApiDocs;
+
 const graphQLStyle = {
   '.graphiql-container': {
     backgroundColor: 'unset',
@@ -31,9 +33,13 @@ const GraphQL = () => {
     }
   }, [ colorMode ]);
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   const initialQuery = `{
     transaction(
-      hash: "${ config.features.graphqlApiDocs.defaultTxHash }"
+      hash: "${ feature.defaultTxHash }"
     ) {
       hash
       blockNumber

ui/home/LatestDepositsItem.tsx

@@ -19,6 +19,8 @@ import HashStringShortenDynamic from 'ui/shared/HashStringShortenDynamic';
 import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 
+const feature = config.features.rollup;
+
 type Props = {
   item: L2DepositsItem;
   isLoading?: boolean;
@@ -28,9 +30,13 @@ const LatestTxsItem = ({ item, isLoading }: Props) => {
   const timeAgo = dayjs(item.l1_block_timestamp).fromNow();
   const isMobile = useIsMobile();
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   const l1BlockLink = (
     <LinkExternal
-      href={ config.features.rollup.L1BaseUrl +
+      href={ feature.L1BaseUrl +
         route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.l1_block_number.toString() } })
       }
       fontWeight={ 700 }
@@ -45,7 +51,7 @@ const LatestTxsItem = ({ item, isLoading }: Props) => {
 
   const l1TxLink = (
     <LinkExternal
-      href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
+      href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
       maxW="100%"
       display="inline-flex"
       alignItems="center"

ui/l2Deposits/DepositsListItem.tsx

@@ -16,18 +16,24 @@ import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 import ListItemMobileGrid from 'ui/shared/ListItemMobile/ListItemMobileGrid';
 
+const feature = config.features.rollup;
+
 type Props = { item: L2DepositsItem; isLoading?: boolean };
 
 const DepositsListItem = ({ item, isLoading }: Props) => {
   const timeAgo = dayjs(item.l1_block_timestamp).fromNow();
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <ListItemMobileGrid.Container>
 
       <ListItemMobileGrid.Label isLoading={ isLoading }>L1 block No</ListItemMobileGrid.Label>
       <ListItemMobileGrid.Value py="3px">
         <LinkExternal
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.l1_block_number.toString() } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.l1_block_number.toString() } }) }
           fontWeight={ 600 }
           display="flex"
           isLoading={ isLoading }
@@ -63,7 +69,7 @@ const DepositsListItem = ({ item, isLoading }: Props) => {
       <ListItemMobileGrid.Label isLoading={ isLoading }>L1 txn hash</ListItemMobileGrid.Label>
       <ListItemMobileGrid.Value py="3px">
         <LinkExternal
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
           maxW="100%"
           display="flex"
           overflow="hidden"
@@ -79,7 +85,7 @@ const DepositsListItem = ({ item, isLoading }: Props) => {
       <ListItemMobileGrid.Label isLoading={ isLoading }>L1 txn origin</ListItemMobileGrid.Label>
       <ListItemMobileGrid.Value py="3px">
         <LinkExternal
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/address/[hash]', query: { hash: item.l1_tx_origin } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/address/[hash]', query: { hash: item.l1_tx_origin } }) }
           maxW="100%"
           display="flex"
           overflow="hidden"

ui/l2Deposits/DepositsTableItem.tsx

@@ -15,16 +15,22 @@ import HashStringShorten from 'ui/shared/HashStringShorten';
 import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 
+const feature = config.features.rollup;
+
  type Props = { item: L2DepositsItem; isLoading?: boolean };
 
 const WithdrawalsTableItem = ({ item, isLoading }: Props) => {
   const timeAgo = dayjs(item.l1_block_timestamp).fromNow();
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <Tr>
       <Td verticalAlign="middle" fontWeight={ 600 }>
         <LinkExternal
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.l1_block_number.toString() } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.l1_block_number.toString() } }) }
           fontWeight={ 600 }
           display="inline-flex"
           isLoading={ isLoading }
@@ -56,7 +62,7 @@ const WithdrawalsTableItem = ({ item, isLoading }: Props) => {
       </Td>
       <Td verticalAlign="middle">
         <LinkExternal
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
           maxW="100%"
           display="inline-flex"
           overflow="hidden"
@@ -70,7 +76,7 @@ const WithdrawalsTableItem = ({ item, isLoading }: Props) => {
       </Td>
       <Td verticalAlign="middle">
         <LinkExternal
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/address/[hash]', query: { hash: item.l1_tx_origin } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/address/[hash]', query: { hash: item.l1_tx_origin } }) }
           maxW="100%"
           display="inline-flex"
           overflow="hidden"

ui/l2OutputRoots/OutputRootsListItem.tsx

@@ -14,11 +14,17 @@ import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 import ListItemMobileGrid from 'ui/shared/ListItemMobile/ListItemMobileGrid';
 
+const feature = config.features.rollup;
+
 type Props = { item: L2OutputRootsItem; isLoading?: boolean };
 
 const OutputRootsListItem = ({ item, isLoading }: Props) => {
   const timeAgo = dayjs(item.l1_timestamp).fromNow();
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <ListItemMobileGrid.Container>
 
@@ -53,7 +59,7 @@ const OutputRootsListItem = ({ item, isLoading }: Props) => {
           maxW="100%"
           display="flex"
           overflow="hidden"
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
           isLoading={ isLoading }
         >
           <Icon as={ txIcon } boxSize={ 6 } isLoading={ isLoading }/>

ui/l2OutputRoots/OutputRootsTableItem.tsx

@@ -14,11 +14,17 @@ import HashStringShortenDynamic from 'ui/shared/HashStringShortenDynamic';
 import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 
+const feature = config.features.rollup;
+
 type Props = { item: L2OutputRootsItem; isLoading?: boolean };
 
 const OutputRootsTableItem = ({ item, isLoading }: Props) => {
   const timeAgo = dayjs(item.l1_timestamp).fromNow();
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <Tr>
       <Td verticalAlign="middle">
@@ -47,7 +53,7 @@ const OutputRootsTableItem = ({ item, isLoading }: Props) => {
           <LinkExternal
             maxW="100%"
             display="inline-flex"
-            href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
+            href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
             isLoading={ isLoading }
           >
             <Icon as={ txIcon } boxSize={ 6 } isLoading={ isLoading }/>

ui/l2TxnBatches/TxnBatchesListItem.tsx

@@ -14,11 +14,17 @@ import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 import ListItemMobileGrid from 'ui/shared/ListItemMobile/ListItemMobileGrid';
 
+const feature = config.features.rollup;
+
 type Props = { item: L2TxnBatchesItem; isLoading?: boolean };
 
 const TxnBatchesListItem = ({ item, isLoading }: Props) => {
   const timeAgo = dayjs(item.l1_timestamp).fromNow();
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <ListItemMobileGrid.Container gridTemplateColumns="100px auto">
 
@@ -56,7 +62,7 @@ const TxnBatchesListItem = ({ item, isLoading }: Props) => {
         <LinkExternal
           fontWeight={ 600 }
           display="inline-flex"
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.epoch_number.toString() } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.epoch_number.toString() } }) }
           isLoading={ isLoading }
         >
           <Skeleton isLoaded={ !isLoading }>
@@ -72,7 +78,7 @@ const TxnBatchesListItem = ({ item, isLoading }: Props) => {
             <LinkExternal
               maxW="100%"
               display="inline-flex"
-              href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: hash } }) }
+              href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: hash } }) }
               key={ hash }
               isLoading={ isLoading }
             >

ui/l2TxnBatches/TxnBatchesTableItem.tsx

@@ -13,11 +13,17 @@ import HashStringShortenDynamic from 'ui/shared/HashStringShortenDynamic';
 import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 
+const feature = config.features.rollup;
+
 type Props = { item: L2TxnBatchesItem; isLoading?: boolean };
 
 const TxnBatchesTableItem = ({ item, isLoading }: Props) => {
   const timeAgo = dayjs(item.l1_timestamp).fromNow();
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <Tr>
       <Td>
@@ -47,7 +53,7 @@ const TxnBatchesTableItem = ({ item, isLoading }: Props) => {
       </Td>
       <Td>
         <LinkExternal
-          href={ config.features.rollup.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.epoch_number.toString() } }) }
+          href={ feature.L1BaseUrl + route({ pathname: '/block/[height_or_hash]', query: { height_or_hash: item.epoch_number.toString() } }) }
           fontWeight={ 600 }
           display="inline-flex"
           isLoading={ isLoading }
@@ -65,7 +71,7 @@ const TxnBatchesTableItem = ({ item, isLoading }: Props) => {
               maxW="100%"
               display="inline-flex"
               key={ hash }
-              href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: hash } }) }
+              href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: hash } }) }
               isLoading={ isLoading }
             >
               <Icon as={ txIcon } boxSize={ 6 } isLoading={ isLoading }/>

ui/l2Withdrawals/WithdrawalsListItem.tsx

@@ -16,12 +16,18 @@ import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 import ListItemMobileGrid from 'ui/shared/ListItemMobile/ListItemMobileGrid';
 
+const feature = config.features.rollup;
+
 type Props = { item: L2WithdrawalsItem; isLoading?: boolean };
 
 const WithdrawalsListItem = ({ item, isLoading }: Props) => {
   const timeAgo = item.l2_timestamp ? dayjs(item.l2_timestamp).fromNow() : null;
   const timeToEnd = item.challenge_period_end ? dayjs(item.challenge_period_end).fromNow(true) + ' left' : null;
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <ListItemMobileGrid.Container>
 
@@ -75,7 +81,7 @@ const WithdrawalsListItem = ({ item, isLoading }: Props) => {
       <ListItemMobileGrid.Label isLoading={ isLoading }>Status</ListItemMobileGrid.Label>
       <ListItemMobileGrid.Value>
         { item.status === 'Ready for relay' ?
-          <LinkExternal href={ config.features.rollup.withdrawalUrl }>{ item.status }</LinkExternal> :
+          <LinkExternal href={ feature.withdrawalUrl }>{ item.status }</LinkExternal> :
           <Skeleton isLoaded={ !isLoading } display="inline-block">{ item.status }</Skeleton> }
       </ListItemMobileGrid.Value>
 
@@ -84,7 +90,7 @@ const WithdrawalsListItem = ({ item, isLoading }: Props) => {
           <ListItemMobileGrid.Label isLoading={ isLoading }>L1 txn hash</ListItemMobileGrid.Label>
           <ListItemMobileGrid.Value py="3px">
             <LinkExternal
-              href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
+              href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
               maxW="100%"
               display="inline-flex"
               overflow="hidden"

ui/l2Withdrawals/WithdrawalsTableItem.tsx

@@ -15,12 +15,18 @@ import HashStringShorten from 'ui/shared/HashStringShorten';
 import LinkExternal from 'ui/shared/LinkExternal';
 import LinkInternal from 'ui/shared/LinkInternal';
 
+const feature = config.features.rollup;
+
  type Props = { item: L2WithdrawalsItem; isLoading?: boolean };
 
 const WithdrawalsTableItem = ({ item, isLoading }: Props) => {
   const timeAgo = item.l2_timestamp ? dayjs(item.l2_timestamp).fromNow() : 'N/A';
   const timeToEnd = item.challenge_period_end ? dayjs(item.challenge_period_end).fromNow(true) + ' left' : '';
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <Tr>
       <Td verticalAlign="middle" fontWeight={ 600 }>
@@ -55,14 +61,14 @@ const WithdrawalsTableItem = ({ item, isLoading }: Props) => {
       </Td>
       <Td verticalAlign="middle">
         { item.status === 'Ready for relay' ?
-          <LinkExternal href={ config.features.rollup.withdrawalUrl }>{ item.status }</LinkExternal> :
+          <LinkExternal href={ feature.withdrawalUrl }>{ item.status }</LinkExternal> :
           <Skeleton isLoaded={ !isLoading } display="inline-block">{ item.status }</Skeleton>
         }
       </Td>
       <Td verticalAlign="middle">
         { item.l1_tx_hash ? (
           <LinkExternal
-            href={ config.features.rollup.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
+            href={ feature.L1BaseUrl + route({ pathname: '/tx/[hash]', query: { hash: item.l1_tx_hash } }) }
             isLoading={ isLoading }
             display="inline-flex"
           >

ui/marketplace/useMarketplaceApps.tsx

@@ -9,6 +9,9 @@ import type { ResourceError } from 'lib/api/resources';
 import useApiFetch from 'lib/hooks/useFetch';
 import { MARKETPLACE_APP } from 'stubs/marketplace';
 
+const feature = config.features.marketplace;
+const configUrl = feature.isEnabled ? feature.configUrl : '';
+
 function isAppNameMatches(q: string, app: MarketplaceAppOverview) {
   return app.title.toLowerCase().includes(q.toLowerCase());
 }
@@ -23,11 +26,12 @@ export default function useMarketplaceApps(filter: string, selectedCategoryId: s
   const apiFetch = useApiFetch();
   const { isPlaceholderData, isError, error, data } = useQuery<unknown, ResourceError<unknown>, Array<MarketplaceAppOverview>>(
     [ 'marketplace-apps' ],
-    async() => apiFetch(config.features.marketplace.configUrl || ''),
+    async() => apiFetch(configUrl),
     {
       select: (data) => (data as Array<MarketplaceAppOverview>).sort((a, b) => a.title.localeCompare(b.title)),
       placeholderData: Array(9).fill(MARKETPLACE_APP),
       staleTime: Infinity,
+      enabled: feature.isEnabled,
     });
 
   const displayedApps = React.useMemo(() => {

ui/pages/Marketplace.tsx

@@ -9,6 +9,7 @@ import MarketplaceList from 'ui/marketplace/MarketplaceList';
 import FilterInput from 'ui/shared/filters/FilterInput';
 
 import useMarketplace from '../marketplace/useMarketplace';
+const feature = config.features.marketplace;
 
 const Marketplace = () => {
   const {
@@ -32,6 +33,10 @@ const Marketplace = () => {
     throw new Error('Unable to get apps list', { cause: error });
   }
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   const selectedApp = displayedApps.find(app => app.id === selectedAppId);
 
   return (
@@ -74,30 +79,28 @@ const Marketplace = () => {
         />
       ) }
 
-      { config.features.marketplace.isEnabled && (
-        <Skeleton
-          isLoaded={ !isPlaceholderData }
-          marginTop={{ base: 8, sm: 16 }}
-          display="inline-block"
+      <Skeleton
+        isLoaded={ !isPlaceholderData }
+        marginTop={{ base: 8, sm: 16 }}
+        display="inline-block"
+      >
+        <Link
+          fontWeight="bold"
+          display="inline-flex"
+          alignItems="baseline"
+          href={ feature.submitFormUrl }
+          isExternal
         >
-          <Link
-            fontWeight="bold"
-            display="inline-flex"
-            alignItems="baseline"
-            href={ config.features.marketplace.submitFormUrl }
-            isExternal
-          >
-            <Icon
-              as={ PlusIcon }
-              w={ 3 }
-              h={ 3 }
-              mr={ 2 }
-            />
+          <Icon
+            as={ PlusIcon }
+            w={ 3 }
+            h={ 3 }
+            mr={ 2 }
+          />
 
               Submit an app
-          </Link>
-        </Skeleton>
-      ) }
+        </Link>
+      </Skeleton>
     </>
   );
 };

ui/pages/MarketplaceApp.tsx

@@ -15,6 +15,9 @@ import getQueryParamString from 'lib/router/getQueryParamString';
 import ContentLoader from 'ui/shared/ContentLoader';
 import PageTitle from 'ui/shared/Page/PageTitle';
 
+const feature = config.features.marketplace;
+const configUrl = feature.isEnabled ? feature.configUrl : '';
+
 const IFRAME_SANDBOX_ATTRIBUTE = 'allow-forms allow-orientation-lock ' +
 'allow-pointer-lock allow-popups-to-escape-sandbox ' +
 'allow-same-origin allow-scripts ' +
@@ -33,7 +36,7 @@ const MarketplaceApp = () => {
   const { isLoading, isError, error, data } = useQuery<unknown, ResourceError<unknown>, MarketplaceAppOverview>(
     [ 'marketplace-apps', id ],
     async() => {
-      const result = await apiFetch<Array<MarketplaceAppOverview>, unknown>(config.features.marketplace.configUrl);
+      const result = await apiFetch<Array<MarketplaceAppOverview>, unknown>(configUrl);
       if (!Array.isArray(result)) {
         throw result;
       }
@@ -45,6 +48,9 @@ const MarketplaceApp = () => {
 
       return item;
     },
+    {
+      enabled: feature.isEnabled,
+    },
   );
 
   const [ isFrameLoading, setIsFrameLoading ] = useState(isLoading);

ui/pages/Withdrawals.tsx

@@ -16,6 +16,8 @@ import useQueryWithPages from 'ui/shared/pagination/useQueryWithPages';
 import WithdrawalsListItem from 'ui/withdrawals/WithdrawalsListItem';
 import WithdrawalsTable from 'ui/withdrawals/WithdrawalsTable';
 
+const feature = config.features.beaconChain;
+
 const Withdrawals = () => {
   const isMobile = useIsMobile();
 
@@ -61,7 +63,7 @@ const Withdrawals = () => {
       );
     }
 
-    if (countersQuery.isError) {
+    if (countersQuery.isError || !feature.isEnabled) {
       return null;
     }
 
@@ -69,7 +71,7 @@ const Withdrawals = () => {
     return (
       <Text mb={{ base: 6, lg: pagination.isVisible ? 0 : 6 }} lineHeight={{ base: '24px', lg: '32px' }}>
         { BigNumber(countersQuery.data.withdrawal_count).toFormat() } withdrawals processed
-        and { valueStr } { config.features.beaconChain.currency.symbol } withdrawn
+        and { valueStr } { feature.currency.symbol } withdrawn
       </Text>
     );
   })();

ui/shared/GoogleAnalytics.tsx

@@ -3,12 +3,14 @@ import React from 'react';
 
 import config from 'configs/app';
 
+const feature = config.features.googleAnalytics;
+
 const GoogleAnalytics = () => {
-  if (!config.features.googleAnalytics.isEnabled) {
+  if (!feature.isEnabled) {
     return null;
   }
 
-  const id = config.features.googleAnalytics.propertyId;
+  const id = feature.propertyId;
 
   return (
     <>

ui/shared/NetworkAddToWallet.tsx

@@ -6,6 +6,8 @@ import useToast from 'lib/hooks/useToast';
 import useProvider from 'lib/web3/useProvider';
 import { WALLETS_INFO } from 'lib/web3/wallets';
 
+const feature = config.features.web3Wallet;
+
 interface Props {
   className?: string;
 }
@@ -54,19 +56,13 @@ const NetworkAddToWallet = ({ className }: Props) => {
     }
   }, [ provider, toast ]);
 
-  if (!provider || !config.chain.rpcUrl) {
-    return null;
-  }
-
-  const defaultWallet = config.features.web3Wallet.defaultWallet;
-
-  if (defaultWallet === 'none') {
+  if (!provider || !config.chain.rpcUrl || !feature.isEnabled) {
     return null;
   }
 
   return (
     <Button variant="outline" size="sm" onClick={ handleClick } className={ className }>
-      <Icon as={ WALLETS_INFO[defaultWallet].icon } boxSize={ 5 } mr={ 2 }/>
+      <Icon as={ WALLETS_INFO[feature.defaultWallet].icon } boxSize={ 5 } mr={ 2 }/>
         Add { config.chain.name }
     </Button>
   );

ui/shared/Web3ModalProvider.tsx

@@ -8,10 +8,12 @@ import { configureChains, createConfig, WagmiConfig } from 'wagmi';
 
 import config from 'configs/app';
 
+const feature = config.features.blockchainInteraction;
+
 const getConfig = () => {
   try {
-    if (!config.features.blockchainInteraction.walletConnect.projectId) {
-      throw new Error('WalletConnect Project ID is not set');
+    if (!feature.isEnabled) {
+      throw new Error();
     }
 
     const currentChain: Chain = {
@@ -50,7 +52,7 @@ const getConfig = () => {
     ]);
     const wagmiConfig = createConfig({
       autoConnect: true,
-      connectors: w3mConnectors({ projectId: config.features.blockchainInteraction.walletConnect.projectId, chains }),
+      connectors: w3mConnectors({ projectId: feature.walletConnect.projectId, chains }),
       publicClient,
     });
     const ethereumClient = new EthereumClient(wagmiConfig, chains);
@@ -72,7 +74,7 @@ const Web3ModalProvider = ({ children, fallback }: Props) => {
   const modalZIndex = useToken<string>('zIndices', 'modal');
   const web3ModalTheme = useColorModeValue('light', 'dark');
 
-  if (!wagmiConfig || !ethereumClient || !config.features.blockchainInteraction.isEnabled) {
+  if (!wagmiConfig || !ethereumClient || !feature.isEnabled) {
     return typeof fallback === 'function' ? fallback() : (fallback || null);
   }
 
@@ -82,7 +84,7 @@ const Web3ModalProvider = ({ children, fallback }: Props) => {
         { children }
       </WagmiConfig>
       <Web3Modal
-        projectId={ config.features.blockchainInteraction.walletConnect.projectId }
+        projectId={ feature.walletConnect.projectId }
         ethereumClient={ ethereumClient }
         themeMode={ web3ModalTheme }
         themeVariables={{

ui/shared/ad/AdBanner.tsx

@@ -9,15 +9,17 @@ import AdbutlerBanner from './AdbutlerBanner';
 import CoinzillaBanner from './CoinzillaBanner';
 import SliseBanner from './SliseBanner';
 
+const feature = config.features.adsBanner;
+
 const AdBanner = ({ className, isLoading }: { className?: string; isLoading?: boolean }) => {
   const hasAdblockCookie = cookies.get(cookies.NAMES.ADBLOCK_DETECTED, useAppContext().cookies);
 
-  if (!config.features.adsBanner.isEnabled || hasAdblockCookie) {
+  if (!feature.isEnabled || hasAdblockCookie) {
     return null;
   }
 
   const content = (() => {
-    switch (config.features.adsBanner.provider) {
+    switch (feature.provider) {
       case 'adbutler':
         return <AdbutlerBanner/>;
       case 'coinzilla':
@@ -32,7 +34,7 @@ const AdBanner = ({ className, isLoading }: { className?: string; isLoading?: bo
       className={ className }
       isLoaded={ !isLoading }
       borderRadius="none"
-      maxW={ config.features.adsBanner.provider === 'adbutler' ? config.features.adsBanner.adButler.config.desktop?.width : '728px' }
+      maxW={ feature.provider === 'adbutler' ? feature.adButler.config.desktop.width : '728px' }
       w="100%"
     >
       { content }

ui/shared/ad/AdbutlerBanner.tsx

@@ -8,10 +8,16 @@ import useIsMobile from 'lib/hooks/useIsMobile';
 import isBrowser from 'lib/isBrowser';
 import { connectAdbutler, placeAd, ADBUTLER_ACCOUNT } from 'ui/shared/ad/adbutlerScript';
 
+const feature = config.features.adsBanner;
+
 const AdbutlerBanner = ({ className }: { className?: string }) => {
   const router = useRouter();
   const isMobile = useIsMobile();
   React.useEffect(() => {
+    if (!feature.isEnabled || feature.provider !== 'adbutler') {
+      return;
+    }
+
     if (isBrowser() && window.AdButler) {
       const abkw = window.abkw || '';
       if (!window.AdButler.ads) {
@@ -19,8 +25,8 @@ const AdbutlerBanner = ({ className }: { className?: string }) => {
       }
       // eslint-disable-next-line @typescript-eslint/ban-ts-comment
       // @ts-ignore:
-      let plc = window[`plc${ config.features.adsBanner.adButler.config.mobile?.id }`] || 0;
-      const adButlerConfig = isMobile ? config.features.adsBanner.adButler.config.mobile : config.features.adsBanner.adButler.config.desktop;
+      let plc = window[`plc${ feature.adButler.config.mobile.id }`] || 0;
+      const adButlerConfig = isMobile ? feature.adButler.config.mobile : feature.adButler.config.desktop;
       const banner = document.getElementById('ad-banner');
       if (banner) {
         banner.innerHTML = '<' + 'div id="placement_' + adButlerConfig?.id + '_' + plc + '"></' + 'div>';
@@ -30,9 +36,9 @@ const AdbutlerBanner = ({ className }: { className?: string }) => {
       window.AdButler.ads.push({ handler: function(opt) {
         window.AdButler.register(
           ADBUTLER_ACCOUNT,
-          adButlerConfig?.id,
-          [ adButlerConfig?.width, adButlerConfig?.height ],
-          `placement_${ adButlerConfig?.id }_` + opt.place,
+          adButlerConfig.id,
+          [ adButlerConfig.width, adButlerConfig.height ],
+          `placement_${ adButlerConfig.id }_` + opt.place,
           opt,
         );
       }, opt: { place: plc++, keywords: abkw, domain: 'servedbyadbutler.com', click: 'CLICK_MACRO_PLACEHOLDER' } });

ui/shared/ad/adbutlerScript.ts

@@ -5,17 +5,25 @@ export const ADBUTLER_ACCOUNT = 182226;
 
 export const connectAdbutler = `if (!window.AdButler){(function(){var s = document.createElement("script"); s.async = true; s.type = "text/javascript";s.src = 'https://servedbyadbutler.com/app.js';var n = document.getElementsByTagName("script")[0]; n.parentNode.insertBefore(s, n);}());}`;
 
-export const placeAd = `
-var AdButler = AdButler || {}; AdButler.ads = AdButler.ads || [];
-  var abkw = window.abkw || '';
-  const isMobile = window.matchMedia("only screen and (max-width: 1000px)").matches;
-  if (isMobile) {
-      var plc${ config.features.adsBanner.adButler.config.mobile?.id } = window.plc${ config.features.adsBanner.adButler.config.mobile?.id } || 0;
-      document.getElementById('ad-banner').innerHTML = '<'+'div id="placement_${ config.features.adsBanner.adButler.config.mobile?.id }_'+plc${ config.features.adsBanner.adButler.config.mobile?.id }+'"></'+'div>';
-      AdButler.ads.push({handler: function(opt){ AdButler.register(${ ADBUTLER_ACCOUNT }, ${ config.features.adsBanner.adButler.config.mobile?.id }, [${ config.features.adsBanner.adButler.config.mobile?.width },${ config.features.adsBanner.adButler.config.mobile?.height }], 'placement_${ config.features.adsBanner.adButler.config.mobile?.id }_'+opt.place, opt); }, opt: { place: plc${ config.features.adsBanner.adButler.config.mobile?.id }++, keywords: abkw, domain: 'servedbyadbutler.com', click:'CLICK_MACRO_PLACEHOLDER' }});
-  } else {
-      var plc${ config.features.adsBanner.adButler.config.desktop?.id } = window.plc${ config.features.adsBanner.adButler.config.desktop?.id } || 0;
-      document.getElementById('ad-banner').innerHTML = '<'+'div id="placement_${ config.features.adsBanner.adButler.config.desktop?.id }_'+plc${ config.features.adsBanner.adButler.config.desktop?.id }+'"></'+'div>';
-      AdButler.ads.push({handler: function(opt){ AdButler.register(${ ADBUTLER_ACCOUNT }, ${ config.features.adsBanner.adButler.config.desktop?.id }, [${ config.features.adsBanner.adButler.config.desktop?.width },${ config.features.adsBanner.adButler.config.desktop?.height }], 'placement_${ config.features.adsBanner.adButler.config.desktop?.id }_'+opt.place, opt); }, opt: { place: plc${ config.features.adsBanner.adButler.config.desktop?.id }++, keywords: abkw, domain: 'servedbyadbutler.com', click:'CLICK_MACRO_PLACEHOLDER' }});
+export const placeAd = (() => {
+  const feature = config.features.adsBanner;
+
+  if (!feature.isEnabled || feature.provider !== 'adbutler') {
+    return;
   }
-`;
+
+  return `
+    var AdButler = AdButler || {}; AdButler.ads = AdButler.ads || [];
+    var abkw = window.abkw || '';
+    const isMobile = window.matchMedia("only screen and (max-width: 1000px)").matches;
+    if (isMobile) {
+        var plc${ feature.adButler.config.mobile.id } = window.plc${ feature.adButler.config.mobile.id } || 0;
+        document.getElementById('ad-banner').innerHTML = '<'+'div id="placement_${ feature.adButler.config.mobile.id }_'+plc${ feature.adButler.config.mobile.id }+'"></'+'div>';
+        AdButler.ads.push({handler: function(opt){ AdButler.register(${ ADBUTLER_ACCOUNT }, ${ feature.adButler.config.mobile.id }, [${ feature.adButler.config.mobile.width },${ feature.adButler.config.mobile.height }], 'placement_${ feature.adButler.config.mobile.id }_'+opt.place, opt); }, opt: { place: plc${ feature.adButler.config.mobile.id }++, keywords: abkw, domain: 'servedbyadbutler.com', click:'CLICK_MACRO_PLACEHOLDER' }});
+    } else {
+        var plc${ feature.adButler.config.desktop.id } = window.plc${ feature.adButler.config.desktop.id } || 0;
+        document.getElementById('ad-banner').innerHTML = '<'+'div id="placement_${ feature.adButler.config.desktop.id }_'+plc${ feature.adButler.config.desktop.id }+'"></'+'div>';
+        AdButler.ads.push({handler: function(opt){ AdButler.register(${ ADBUTLER_ACCOUNT }, ${ feature.adButler.config.desktop.id }, [${ feature.adButler.config.desktop.width },${ feature.adButler.config.desktop.height }], 'placement_${ feature.adButler.config.desktop.id }_'+opt.place, opt); }, opt: { place: plc${ feature.adButler.config.desktop.id }++, keywords: abkw, domain: 'servedbyadbutler.com', click:'CLICK_MACRO_PLACEHOLDER' }});
+    }
+  `;
+})();

ui/shared/address/AddressAddToWallet.tsx

@@ -8,6 +8,8 @@ import useToast from 'lib/hooks/useToast';
 import useProvider from 'lib/web3/useProvider';
 import { WALLETS_INFO } from 'lib/web3/wallets';
 
+const feature = config.features.web3Wallet;
+
 interface Props {
   className?: string;
   token: TokenInfo;
@@ -64,16 +66,14 @@ const AddressAddToWallet = ({ className, token, isLoading }: Props) => {
     return <Skeleton className={ className } boxSize={ 6 } borderRadius="base"/>;
   }
 
-  const defaultWallet = config.features.web3Wallet.defaultWallet;
-
-  if (defaultWallet === 'none') {
+  if (!feature.isEnabled) {
     return null;
   }
 
   return (
-    <Tooltip label={ `Add token to ${ WALLETS_INFO[defaultWallet].name }` }>
+    <Tooltip label={ `Add token to ${ WALLETS_INFO[feature.defaultWallet].name }` }>
       <Box className={ className } display="inline-flex" cursor="pointer" onClick={ handleClick }>
-        <Icon as={ WALLETS_INFO[defaultWallet].icon } boxSize={ 6 }/>
+        <Icon as={ WALLETS_INFO[feature.defaultWallet].icon } boxSize={ 6 }/>
       </Box>
     </Tooltip>
   );

ui/snippets/profileMenu/ProfileMenuContent.tsx

@@ -8,6 +8,8 @@ import useNavItems from 'lib/hooks/useNavItems';
 import getDefaultTransitionProps from 'theme/utils/getDefaultTransitionProps';
 import NavLink from 'ui/snippets/navigation/NavLink';
 
+const feature = config.features.account;
+
 type Props = {
   data?: UserInfo;
 };
@@ -16,6 +18,10 @@ const ProfileMenuContent = ({ data }: Props) => {
   const { accountNavItems, profileItem } = useNavItems();
   const primaryTextColor = useColorModeValue('blackAlpha.800', 'whiteAlpha.800');
 
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <Box>
       { (data?.name || data?.nickname) && (
@@ -46,7 +52,7 @@ const ProfileMenuContent = ({ data }: Props) => {
         </VStack>
       </Box>
       <Box mt={ 2 } pt={ 3 } borderTopColor="divider" borderTopWidth="1px" { ...getDefaultTransitionProps() }>
-        <Button size="sm" width="full" variant="outline" as="a" href={ config.features.account.logoutUrl }>Sign Out</Button>
+        <Button size="sm" width="full" variant="outline" as="a" href={ feature.logoutUrl }>Sign Out</Button>
       </Box>
     </Box>
   );

ui/snippets/profileMenu/ProfileMenuDesktop.tsx

@@ -19,7 +19,7 @@ const ProfileMenuDesktop = () => {
   }, [ data, error?.status, isLoading ]);
 
   const buttonProps: Partial<ButtonProps> = (() => {
-    if (hasMenu) {
+    if (hasMenu || !loginUrl) {
       return {};
     }
 

ui/snippets/profileMenu/ProfileMenuMobile.tsx

@@ -21,7 +21,7 @@ const ProfileMenuMobile = () => {
   }, [ data, error?.status, isLoading ]);
 
   const buttonProps: Partial<ButtonProps> = (() => {
-    if (hasMenu) {
+    if (hasMenu || !loginUrl) {
       return {};
     }
 

ui/withdrawals/WithdrawalsListItem.tsx

@@ -16,6 +16,8 @@ import CurrencyValue from 'ui/shared/CurrencyValue';
 import LinkInternal from 'ui/shared/LinkInternal';
 import ListItemMobileGrid from 'ui/shared/ListItemMobile/ListItemMobileGrid';
 
+const feature = config.features.beaconChain;
+
 type Props = ({
   item: WithdrawalsItem;
   view: 'list';
@@ -28,6 +30,10 @@ type Props = ({
 }) & { isLoading?: boolean };
 
 const WithdrawalsListItem = ({ item, isLoading, view }: Props) => {
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <ListItemMobileGrid.Container gridTemplateColumns="100px auto">
 
@@ -85,7 +91,7 @@ const WithdrawalsListItem = ({ item, isLoading, view }: Props) => {
 
           <ListItemMobileGrid.Label isLoading={ isLoading }>Value</ListItemMobileGrid.Label>
           <ListItemMobileGrid.Value>
-            <CurrencyValue value={ item.amount } currency={ config.features.beaconChain.currency.symbol } isLoading={ isLoading }/>
+            <CurrencyValue value={ item.amount } currency={ feature.currency.symbol } isLoading={ isLoading }/>
           </ListItemMobileGrid.Value>
         </>
       ) }

ui/withdrawals/WithdrawalsTable.tsx

@@ -10,6 +10,8 @@ import { default as Thead } from 'ui/shared/TheadSticky';
 
 import WithdrawalsTableItem from './WithdrawalsTableItem';
 
+const feature = config.features.beaconChain;
+
  type Props = {
    top: number;
    isLoading?: boolean;
@@ -25,6 +27,10 @@ import WithdrawalsTableItem from './WithdrawalsTableItem';
  });
 
 const WithdrawalsTable = ({ items, isLoading, top, view = 'list' }: Props) => {
+  if (!feature.isEnabled) {
+    return null;
+  }
+
   return (
     <Table variant="simple" size="sm" style={{ tableLayout: 'auto' }} minW="950px">
       <Thead top={ top }>
@@ -34,7 +40,7 @@ const WithdrawalsTable = ({ items, isLoading, top, view = 'list' }: Props) => {
           { view !== 'block' && <Th w="25%">Block</Th> }
           { view !== 'address' && <Th w="25%">To</Th> }
           { view !== 'block' && <Th w="25%">Age</Th> }
-          <Th w="25%">{ `Value ${ config.features.beaconChain.currency.symbol }` }</Th>
+          <Th w="25%">{ `Value ${ feature.currency.symbol }` }</Th>
         </Tr>
       </Thead>
       <Tbody>