fix: Remove magic __DEV__ global (#151)

packages/use-intl/src/core/createBaseTranslator.tsx

@@ -24,7 +24,9 @@ function resolvePath(
 ) {
   if (!messages) {
     throw new Error(
-      __DEV__ ? `No messages available at \`${namespace}\`.` : undefined
+      process.env.NODE_ENV !== 'production'
+        ? `No messages available at \`${namespace}\`.`
+        : undefined
     );
   }
 
@@ -35,7 +37,7 @@ function resolvePath(
 
     if (part == null || next == null) {
       throw new Error(
-        __DEV__
+        process.env.NODE_ENV !== 'production'
           ? `Could not resolve \`${key}\` in ${
               namespace ? `\`${namespace}\`` : 'messages'
             }.`
@@ -89,7 +91,9 @@ export function getMessagesOrError<Messages extends AbstractIntlMessages>({
   try {
     if (!messages) {
       throw new Error(
-        __DEV__ ? `No messages were configured on the provider.` : undefined
+        process.env.NODE_ENV !== 'production'
+          ? `No messages were configured on the provider.`
+          : undefined
       );
     }
 
@@ -99,7 +103,7 @@ export function getMessagesOrError<Messages extends AbstractIntlMessages>({
 
     if (!retrievedMessages) {
       throw new Error(
-        __DEV__
+        process.env.NODE_ENV !== 'production'
           ? `No messages for namespace \`${namespace}\` found.`
           : undefined
       );
@@ -187,7 +191,7 @@ export default function createBaseTranslator<
         return getFallbackFromErrorAndNotify(
           key,
           IntlErrorCode.INSUFFICIENT_PATH,
-          __DEV__
+          process.env.NODE_ENV !== 'production'
             ? `Insufficient path specified for \`${key}\` in \`${
                 namespace ? `\`${namespace}\`` : 'messages'
               }\`.`
@@ -231,7 +235,7 @@ export default function createBaseTranslator<
 
       if (formattedMessage == null) {
         throw new Error(
-          __DEV__
+          process.env.NODE_ENV !== 'production'
             ? `Unable to format \`${key}\` in ${
                 namespace ? `namespace \`${namespace}\`` : 'messages'
               }`
@@ -274,7 +278,7 @@ export default function createBaseTranslator<
       return getFallbackFromErrorAndNotify(
         key,
         IntlErrorCode.INVALID_MESSAGE,
-        __DEV__
+        process.env.NODE_ENV !== 'production'
           ? `The message \`${key}\` in ${
               namespace ? `namespace \`${namespace}\`` : 'messages'
             } didn't resolve to a string. If you want to format rich text, use \`t.rich\` instead.`

packages/use-intl/src/core/createIntl.tsx

@@ -71,7 +71,7 @@ export default function createIntl({
       if (!options) {
         const error = new IntlError(
           IntlErrorCode.MISSING_FORMAT,
-          __DEV__
+          process.env.NODE_ENV !== 'production'
             ? `Format \`${formatName}\` is not available. You can configure it on the provider or provide custom options.`
             : undefined
         );
@@ -153,7 +153,7 @@ export default function createIntl({
           now = globalNow;
         } else {
           throw new Error(
-            __DEV__
+            process.env.NODE_ENV !== 'production'
               ? `The \`now\` parameter wasn't provided to \`formatRelativeTime\` and there was no global fallback configured on the provider.`
               : undefined
           );

packages/use-intl/src/core/createTranslatorImpl.tsx

@@ -67,7 +67,7 @@ export default function createTranslatorImpl<
     if (typeof result !== 'string') {
       const error = new IntlError(
         IntlErrorCode.FORMATTING_ERROR,
-        __DEV__
+        process.env.NODE_ENV !== 'production'
           ? "`createTranslator` only accepts functions for rich text formatting that receive and return strings.\n\nE.g. t.rich('rich', {b: (chunks) => `<b>${chunks}</b>`})"
           : undefined
       );

packages/use-intl/src/react/IntlProvider.tsx

@@ -24,7 +24,7 @@ export default function IntlProvider({
   messages,
   ...contextValues
 }: Props) {
-  if (__DEV__) {
+  if (process.env.NODE_ENV !== 'production') {
     // eslint-disable-next-line react-hooks/rules-of-hooks
     useEffect(() => {
       if (messages) {

packages/use-intl/src/react/useIntlContext.tsx

@@ -6,7 +6,7 @@ export default function useIntlContext() {
 
   if (!context) {
     throw new Error(
-      __DEV__
+      process.env.NODE_ENV !== 'production'
         ? 'No intl context found. Have you configured the provider?'
         : undefined
     );

packages/use-intl/test/core/createIntl.test.tsx

@@ -1,8 +1,6 @@
 import {parseISO} from 'date-fns';
 import {createIntl} from '../../src';
 
-(global as any).__DEV__ = true;
-
 const intl = createIntl({locale: 'en'});
 
 it('formats a date and time', () => {

packages/use-intl/test/core/createTranslator.test.tsx

@@ -1,8 +1,6 @@
 import React from 'react';
 import {createTranslator, IntlError, IntlErrorCode} from '../../src';
 
-(global as any).__DEV__ = true;
-
 const messages = {
   Home: {
     title: 'Hello world!',

packages/use-intl/test/react/useIntl.test.tsx

@@ -10,8 +10,6 @@ import {
   useIntl
 } from '../../src';
 
-(global as any).__DEV__ = true;
-
 function MockProvider(
   props: Partial<ComponentProps<typeof IntlProvider>> & {children: ReactNode}
 ) {

packages/use-intl/test/react/useLocale.test.tsx

@@ -2,8 +2,6 @@ import {render, screen} from '@testing-library/react';
 import React from 'react';
 import {IntlProvider, useLocale} from '../../src';
 
-(global as any).__DEV__ = true;
-
 it('returns the current locale', () => {
   function Component() {
     return <>{useLocale()}</>;

packages/use-intl/test/react/useNow.test.tsx

@@ -3,8 +3,6 @@ import {parseISO} from 'date-fns';
 import React from 'react';
 import {IntlProvider, useNow} from '../../src';
 
-(global as any).__DEV__ = true;
-
 it('returns the current time', () => {
   function Component() {
     return <p>{useNow().toISOString()}</p>;

packages/use-intl/test/react/useTimeZone.test.tsx

@@ -2,8 +2,6 @@ import {render, screen} from '@testing-library/react';
 import React from 'react';
 import {IntlProvider, useTimeZone} from '../../src';
 
-(global as any).__DEV__ = true;
-
 it('returns the time zone when it is configured', () => {
   function Component() {
     return <>{useTimeZone()}</>;

packages/use-intl/test/react/useTranslations.test.tsx

@@ -12,8 +12,6 @@ import {
   useTranslations
 } from '../../src';
 
-(global as any).__DEV__ = true;
-
 // Wrap the library to include a counter for parse
 // invocations for the cache test below.
 jest.mock('intl-messageformat', () => {

packages/use-intl/types/index.d.ts

@@ -1,5 +1,3 @@
-declare const __DEV__: boolean;
-
 // Temporarly copied here until the "es2020.intl" lib is published.
 
 declare namespace Intl {