[core] Hoist duplicated dependencies

package.json

@@ -41,6 +41,8 @@
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "^4.0.0-alpha.54",
     "@material-ui/monorepo": "https://github.com/mui-org/material-ui.git#next",
+    "@rollup/plugin-node-resolve": "^8.0.1",
+    "@rollup/plugin-replace": "^2.3.3",
     "@testing-library/react": "^10.4.8",
     "@types/enzyme": "^3.10.5",
     "@types/enzyme-adapter-react-16": "^1.0.6",
@@ -89,6 +91,13 @@
     "pretty-format-v24": "npm:pretty-format@24",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
+    "rollup": "^2.6.1",
+    "rollup-plugin-cleaner": "^1.0.0",
+    "rollup-plugin-command": "^1.1.3",
+    "rollup-plugin-dts": "^1.4.7",
+    "rollup-plugin-sourcemaps": "^0.6.2",
+    "rollup-plugin-terser": "^5.3.0",
+    "rollup-plugin-typescript2": "^0.27.1",
     "sinon": "^9.0.2",
     "stylelint": "^13.3.3",
     "stylelint-config-recommended": "^3.0.0",

packages/grid/data-grid/package.json

@@ -38,15 +38,7 @@
     "tslib": "^2.0.0"
   },
   "devDependencies": {
-    "@material-ui/x-grid-modules": "^4.0.0-alpha.2",
-    "@rollup/plugin-node-resolve": "^8.0.1",
-    "rollup": "^2.6.1",
-    "rollup-plugin-cleaner": "^1.0.0",
-    "rollup-plugin-command": "^1.1.3",
-    "rollup-plugin-dts": "^1.4.7",
-    "rollup-plugin-sourcemaps": "^0.6.2",
-    "rollup-plugin-terser": "^5.3.0",
-    "rollup-plugin-typescript2": "^0.27.1"
+    "@material-ui/x-grid-modules": "^4.0.0-alpha.2"
   },
   "peerDependencies": {
     "@material-ui/core": "^4.9.12",

packages/grid/x-grid-data-generator/package.json

@@ -33,15 +33,6 @@
   },
   "devDependencies": {
     "@types/node": "^14.0.13",
-    "rollup": "^2.6.1",
-    "rollup-plugin-cleaner": "^1.0.0",
-    "rollup-plugin-commonjs": "^10.1.0",
-    "rollup-plugin-css-only": "^2.0.0",
-    "rollup-plugin-dts": "^1.4.7",
-    "rollup-plugin-postcss": "^3.1.2",
-    "rollup-plugin-sourcemaps": "^0.6.2",
-    "rollup-plugin-terser": "^5.3.0",
-    "rollup-plugin-typescript2": "^0.27.1",
     "tslib": "^2.0.0"
   },
   "peerDependencies": {

packages/grid/x-grid-data-generator/rollup.config.js

@@ -2,9 +2,7 @@ import typescript from 'rollup-plugin-typescript2';
 import cleaner from 'rollup-plugin-cleaner';
 import sourceMaps from 'rollup-plugin-sourcemaps';
 import { terser } from 'rollup-plugin-terser';
-import css from 'rollup-plugin-css-only';
 import commonjs from 'rollup-plugin-commonjs';
-import postcss from 'rollup-plugin-postcss';
 import dts from 'rollup-plugin-dts';
 import pkg from './package.json';
 
@@ -33,9 +31,7 @@ export default [
           targets: ['./dist/'],
         }),
       typescript(),
-      css({ output: 'dist/demo-style.css' }),
       commonjs(),
-      postcss(),
       !production && sourceMaps(),
       production && terser(),
     ],

packages/grid/x-grid/package.json

@@ -30,16 +30,7 @@
   },
   "devDependencies": {
     "@material-ui/x-grid-modules": "^4.0.0-alpha.2",
-    "@material-ui/x-license": "^4.0.0-alpha.2",
-    "@rollup/plugin-node-resolve": "^8.0.1",
-    "@rollup/plugin-replace": "^2.3.3",
-    "rollup": "^2.6.1",
-    "rollup-plugin-cleaner": "^1.0.0",
-    "rollup-plugin-command": "^1.1.3",
-    "rollup-plugin-dts": "^1.4.7",
-    "rollup-plugin-sourcemaps": "^0.6.2",
-    "rollup-plugin-terser": "^5.3.0",
-    "rollup-plugin-typescript2": "^0.27.1"
+    "@material-ui/x-license": "^4.0.0-alpha.2"
   },
   "peerDependencies": {
     "@material-ui/core": "^4.9.12",