Support i18next 22, react-i18next 12 and move both to peer-deps

README.md

@@ -41,8 +41,8 @@ Now our Next.js app is fully translatable!
 
 ### 1. Installation
 
-```jsx
-yarn add next-i18next
+```bash
+yarn add next-i18next react-i18next i18next
 ```
 
 You need to also have `react` and `next` installed.

UPGRADING.md

@@ -0,0 +1,20 @@
+## Version 13.x
+
+From version 13, both `i18next` and `react-i18next` have been moved to peerDependencies.
+Be sure to install them in the consuming app or package by running:
+
+```bash
+yarn add react-i18next i18next
+pnpm add react-i18next i18next --save
+npm install react-i18next i18next --save
+```
+
+As of version 13.x, next-i18next supports i18next `^21.9.1 || ^22.0.1` range
+react-i18next from `^11.18.4`. It's possible for the consuming application to 
+select a specific supported version, ie `yarn add 'i18next@^21.10.0'`.
+
+> **Note**
+> If you're facing issues after upgrading, please first check that your dependencies 
+> are properly deduplicated (ie: `yarn why react-i18next -R`, `pnpm why -r react-i18next i18next`...)
+> or use `yarn dedupe --list`, `npx -y pnpm-dedpuplicate --list`, `npx -y yarn-deduplicate --list`.
+

examples/simple/package.json

@@ -9,10 +9,12 @@
     "start": "next start -p ${PORT:=3000}"
   },
   "dependencies": {
+    "i18next": "22.0.1",
     "next": "12.3.1",
     "next-i18next": "12.1.0",
     "prop-types": "15.8.1",
     "react": "18.2.0",
+    "react-i18next": "11.18.6",
     "react-dom": "18.2.0"
   }
 }

examples/ssg/package.json

@@ -15,9 +15,13 @@
     "downloadLocales": "locize download --project-id=0842ada9-1d1d-4d48-ab27-08f6a132f558 --ver=latest --clean=true --path=./public/locales"
   },
   "dependencies": {
+    "i18next": "22.0.1",
     "next": "12.3.1",
     "next-i18next": "12.1.0",
-    "next-language-detector": "1.0.2"
+    "next-language-detector": "1.0.2",
+    "react": "18.2.0",
+    "react-i18next": "11.18.6",
+    "react-dom": "18.2.0"
   },
   "devDependencies": {
     "eslint-config-next": "12.3.1",

package.json

@@ -117,10 +117,12 @@
     "eslint-plugin-typescript-sort-keys": "^2.1.0",
     "gh-release": "6.0.4",
     "husky": "^3.0.0",
+    "i18next": "^22.0.1",
     "jest": "^26.6.3",
     "next": "^12.2.5",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
+    "react-i18next": "^11.18.6",
     "start-server-and-test": "^1.14.0",
     "typescript": "^4.7.4"
   },
@@ -129,13 +131,13 @@
     "@types/hoist-non-react-statics": "^3.3.1",
     "core-js": "^3",
     "hoist-non-react-statics": "^3.3.2",
-    "i18next": "^21.9.1",
-    "i18next-fs-backend": "^1.1.5",
-    "react-i18next": "^11.18.4"
+    "i18next-fs-backend": "^1.1.5"
   },
   "peerDependencies": {
+    "i18next": "^21.9.1 || ^22.0.1",
     "next": ">= 10.0.0",
-    "react": ">= 16.8.0"
+    "react": "16.8.0",
+    "react-i18next": "^11.18.4"
   },
   "resolutions": {
     "i18next": ">=21.8.14",