feat: Add client-side feature flag for Follow+Notes functionality (#3440

)

* feat: Add client-side feature flag for Follow+Notes functionality

Introduced a new client-side feature flag named followNotesEnabled as part of the implementation for the "Follow + Note" feature

- Implemented followNotesEnabled feature flag in index.js.

- Registered the flag with default true in deploy-config.js.

- Added flag to staging.tfvars and prod.tfvars with false default.

- Reformatted lines 16-17 in deploy-config.js for ESLint compliance.

* eslint fix

* terraform formatting fix

packages/client/public/deploy-config.js

@@ -13,8 +13,11 @@ window.APP_CONFIG.overrideFeatureFlag = (flagName, overrideValue) => {
   }
   overrides[flagName] = overrideValue;
   window.sessionStorage.setItem(storageKey, JSON.stringify(overrides));
-  console.log('New feature flag overrides in page session:',
-    window.sessionStorage.getItem(storageKey));
+  // Reformatted according to common ESLint rules
+  /* eslint-disable no-console */
+  // console.log('New feature flag overrides in page session:', window.sessionStorage.getItem(storageKey));
+  console.log(`New feature flag overrides in page session: ${window.sessionStorage.getItem(storageKey)}`);
+  /* eslint-enable no-console */
 };
 
 // For local development only. Register feature flags for Staging and Production by
@@ -23,6 +26,7 @@ window.APP_CONFIG.featureFlags = {
   newTerminologyEnabled: true,
   newGrantsDetailPageEnabled: true,
   shareTerminologyEnabled: true,
+  followNotesEnabled: true,
 };
 
 // Setting a GOOGLE_TAG_ID enables Google Analytics.

packages/client/src/helpers/featureFlags/index.js

@@ -11,3 +11,7 @@ export function newGrantsDetailPageEnabled() {
 export function shareTerminologyEnabled() {
   return getFeatureFlags().shareTerminologyEnabled === true;
 }
+
+export function followNotesEnabled() {
+  return getFeatureFlags().followNotesEnabled === true;
+}

terraform/prod.tfvars

@@ -51,6 +51,7 @@ website_feature_flags = {
   newTerminologyEnabled      = true,
   newGrantsDetailPageEnabled = true,
   shareTerminologyEnabled    = true,
+  followNotesEnabled         = false,
 }
 
 // Google Analytics Account ID: 233192355, Property ID: 321194851, Stream ID: 3802896350

terraform/staging.tfvars

@@ -50,6 +50,7 @@ website_feature_flags = {
   newTerminologyEnabled      = true,
   newGrantsDetailPageEnabled = true,
   shareTerminologyEnabled    = true,
+  followNotesEnabled         = false,
 }
 
 // Google Analytics Account ID: 233192355, Property ID: 429910307, Stream ID: 7590745080