[core] Add the download tracker package (#33899)

package.json

@@ -7,7 +7,7 @@
     "deduplicate": "node scripts/deduplicate.js",
     "benchmark:browser": "yarn workspace benchmark browser",
     "build:codesandbox": "lerna run --parallel --scope \"@mui/*\" build",
-    "release:version": "lerna version --no-changelog --no-push --no-git-tag-version",
+    "release:version": "lerna version --no-changelog --no-push --no-git-tag-version --force-publish=@mui/core-internal-download-tracker",
     "release:build": "lerna run --parallel --scope \"@mui/*\" build",
     "release:changelog": "node scripts/releaseChangelog",
     "release:publish": "lerna publish from-package --dist-tag latest --contents build",

packages/mui-core-internal-download-tracker/README.md

@@ -0,0 +1,5 @@
+# @mui/core-internal-download-tracker
+
+This package does not contain any code.
+It is used solely to track number of downloads of @mui/material and @mui/joy (the only packages that depend on it) and help us determine the number of users of @mui/base.
+Counting downloads is done by npm (as for every other package).

packages/mui-core-internal-download-tracker/index.js

@@ -0,0 +1 @@
+export default null;

packages/mui-core-internal-download-tracker/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "@mui/core-internal-download-tracker",
+  "version": "5.10.0",
+  "private": false,
+  "author": "MUI Team",
+  "description": "Internal package to track number of downloads of our design system libraries",
+  "main": "./index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/mui/material-ui.git",
+    "directory": "packages/mui-core-internal-download-tracker"
+  },
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/mui/material-ui/issues"
+  },
+  "homepage": "https://mui.com/",
+  "funding": {
+    "type": "opencollective",
+    "url": "https://opencollective.com/mui"
+  },
+  "scripts": {
+    "release": "npm publish ."
+  }
+}

packages/mui-joy/package.json

@@ -58,6 +58,7 @@
   "dependencies": {
     "@babel/runtime": "^7.17.2",
     "@mui/base": "5.0.0-alpha.92",
+    "@mui/core-internal-download-tracker": "5.10.0",
     "@mui/system": "^5.10.0",
     "@mui/types": "^7.1.5",
     "@mui/utils": "^5.9.3",

packages/mui-material/package.json

@@ -62,6 +62,7 @@
   "dependencies": {
     "@babel/runtime": "^7.17.2",
     "@mui/base": "5.0.0-alpha.92",
+    "@mui/core-internal-download-tracker": "5.10.0",
     "@mui/system": "^5.10.0",
     "@mui/types": "^7.1.5",
     "@mui/utils": "^5.9.3",