Try fixing deps to next

examples/demo/package.json

@@ -12,13 +12,13 @@
         "fetch-mock": "~6.3.0",
         "json-graphql-server": "~2.1.3",
         "proxy-polyfill": "^0.3.0",
-        "ra-data-fakerest": "^3.0.0",
-        "ra-data-graphql-simple": "^3.0.0",
-        "ra-data-simple-rest": "^3.0.0",
-        "ra-i18n-polyglot": "^3.0.0",
-        "ra-input-rich-text": "^3.0.0",
-        "ra-language-english": "^3.0.0",
-        "ra-language-french": "^3.0.0",
+        "ra-data-fakerest": "next",
+        "ra-data-graphql-simple": "next",
+        "ra-data-simple-rest": "next",
+        "ra-i18n-polyglot": "next",
+        "ra-input-rich-text": "next",
+        "ra-language-english": "next",
+        "ra-language-french": "next",
         "react": "^16.9.0",
         "react-admin": "^3.0.0",
         "react-app-polyfill": "^1.0.4",
@@ -54,4 +54,4 @@
         "source-map-explorer": "^2.0.0",
         "typescript": "^4.0.2"
     }
-}
+}

examples/simple/package.json

@@ -37,11 +37,11 @@
         "@babel/polyfill": "^7.10.4",
         "@material-ui/core": "^4.10.0",
         "@material-ui/icons": "^4.9.1",
-        "ra-data-fakerest": "^3.0.0",
-        "ra-i18n-polyglot": "^3.0.0",
-        "ra-input-rich-text": "^3.0.0",
-        "ra-language-english": "^3.0.0",
-        "ra-language-french": "^3.0.0",
+        "ra-data-fakerest": "next",
+        "ra-i18n-polyglot": "next",
+        "ra-input-rich-text": "next",
+        "ra-language-english": "next",
+        "ra-language-french": "next",
         "react": "^16.9.0",
         "react-admin": "^3.0.0",
         "react-dom": "^16.9.0"

examples/tutorial/package.json

@@ -4,7 +4,7 @@
     "private": true,
     "dependencies": {
         "@material-ui/core": "^4.10.0",
-        "ra-data-json-server": "^3.0.0",
+        "ra-data-json-server": "next",
         "react": "^16.9.0",
         "react-admin": "^3.0.0",
         "react-dom": "^16.9.0",
@@ -21,4 +21,4 @@
         "not ie <= 11",
         "not op_mini all"
     ]
-}
+}

packages/ra-data-fakerest/package.json

@@ -44,6 +44,6 @@
         "rimraf": "^2.6.3"
     },
     "peerDependencies": {
-        "ra-core": "^3.0.0"
+        "ra-core": "next"
     }
 }

packages/ra-data-graphql-simple/package.json

@@ -36,11 +36,11 @@
         "graphql-tag": "^2.10.1",
         "lodash": "~4.17.5",
         "pluralize": "~7.0.0",
-        "ra-data-graphql": "^3.9.0-beta.1"
+        "ra-data-graphql": "next"
     },
     "peerDependencies": {
         "graphql": "^14.1.1",
-        "ra-core": "^3.0.0"
+        "ra-core": "next"
     },
     "devDependencies": {
         "cross-env": "^5.2.0",

packages/ra-data-graphql/package.json

@@ -40,7 +40,7 @@
     },
     "peerDependencies": {
         "graphql": "^14.1.1",
-        "ra-core": "^3.0.0"
+        "ra-core": "next"
     },
     "devDependencies": {
         "cross-env": "^5.2.0",

packages/ra-data-json-server/package.json

@@ -26,7 +26,7 @@
     },
     "dependencies": {
         "query-string": "^5.1.1",
-        "ra-core": "^3.9.0-beta.1"
+        "ra-core": "next"
     },
     "devDependencies": {
         "cross-env": "^5.2.0",

packages/ra-data-simple-rest/package.json

@@ -32,6 +32,6 @@
         "rimraf": "^2.6.3"
     },
     "peerDependencies": {
-        "ra-core": "^3.0.0"
+        "ra-core": "next"
     }
 }

packages/ra-i18n-polyglot/package.json

@@ -26,7 +26,7 @@
     },
     "dependencies": {
         "node-polyglot": "^2.2.2",
-        "ra-core": "^3.9.0-beta.1"
+        "ra-core": "next"
     },
     "devDependencies": {
         "cross-env": "^5.2.0",

packages/ra-input-rich-text/package.json

@@ -40,8 +40,8 @@
         "watch": "tsc --outDir esm --module es2015 --watch"
     },
     "peerDependencies": {
-        "ra-core": "^3.0.0",
-        "ra-ui-materialui": "^4.3.3",
+        "ra-core": "next",
+        "ra-ui-materialui": "next",
         "react": "^16.9.0",
         "react-dom": "^16.9.0"
     },

packages/ra-language-english/package.json

@@ -22,7 +22,7 @@
         "watch": "tsc --outDir esm --module es2015 --watch"
     },
     "dependencies": {
-        "ra-core": "^3.9.0-beta.1"
+        "ra-core": "next"
     },
     "keywords": [
         "react",

packages/ra-language-french/package.json

@@ -16,7 +16,7 @@
         "watch": "tsc --outDir esm --module es2015 --watch"
     },
     "dependencies": {
-        "ra-core": "^3.9.0-beta.1"
+        "ra-core": "next"
     },
     "keywords": [
         "react",

packages/ra-ui-materialui/package.json

@@ -38,7 +38,7 @@
         "final-form": "^4.20.0",
         "final-form-arrays": "^3.0.1",
         "ignore-styles": "~5.0.1",
-        "ra-core": "^3.9.0-beta.1",
+        "ra-core": "next",
         "react": "^16.9.0",
         "react-dom": "^16.9.0",
         "react-final-form": "^6.5.0",
@@ -56,7 +56,7 @@
         "@material-ui/styles": "^4.3.3",
         "final-form": "^4.18.5",
         "final-form-arrays": "^3.0.1",
-        "ra-core": "^3.0.0",
+        "ra-core": "next",
         "react": "^16.9.0",
         "react-dom": "^16.9.0",
         "react-final-form": "^6.3.3",

packages/react-admin/package.json

@@ -40,10 +40,10 @@
         "connected-react-router": "^6.5.2",
         "final-form": "^4.18.5",
         "final-form-arrays": "^3.0.1",
-        "ra-core": "^3.9.0-beta.1",
-        "ra-i18n-polyglot": "^3.9.0-beta.1",
-        "ra-language-english": "^3.9.0-beta.1",
-        "ra-ui-materialui": "^3.9.0-beta.1",
+        "ra-core": "next",
+        "ra-i18n-polyglot": "next",
+        "ra-language-english": "next",
+        "ra-ui-materialui": "next",
         "react-final-form": "^6.3.3",
         "react-final-form-arrays": "^3.1.1",
         "react-redux": "^7.1.0",