build: add staging NODE_ENV (Uniswap#4187)

* refactor: move initializeAnalytics code to top-level

* expect that there's a node env per key

* remove more dev specific stuff

* module.exports

* remove locales

* fix

* service worker update

.env

@@ -1,3 +1,2 @@
 REACT_APP_INFURA_KEY="4bf032f2d38a4ed6bb975b80d6340847"
 REACT_APP_FORTMATIC_KEY="pk_live_357F77728B8EB880"
-REACT_APP_LOCALES="locales"

babel-plugin-macros.config.js

@@ -1,4 +1,4 @@
-const isDev = process.env.NODE_ENV !== 'production'
+const isDev = process.env.NODE_ENV === 'development'
 
 module.exports = {
   styledComponents: {

src/lib/i18n.tsx

@@ -79,7 +79,7 @@ const plurals: LocalePlural = {
 export async function dynamicActivate(locale: SupportedLocale) {
   i18n.loadLocaleData(locale, { plurals: () => plurals[locale] })
   try {
-    const catalog = await import(`${process.env.REACT_APP_LOCALES}/${locale}.js`)
+    const catalog = await import(`locales/${locale}.js`)
     // Bundlers will either export it as default or as a named export named default.
     i18n.load(locale, catalog.messages || catalog.default.messages)
   } catch {}

src/serviceWorkerRegistration.ts

@@ -93,7 +93,7 @@ function checkValidServiceWorker(swUrl: string, config?: Config) {
 }
 
 export function register(config?: Config) {
-  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
+  if (['production', 'staging'].includes(process.env.NODE_ENV) && 'serviceWorker' in navigator) {
     // The URL constructor is available in all browsers that support SW.
     const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href)
     if (publicUrl.origin !== window.location.origin) {