feat(npm): add experimental entrypoint (#3295)

* feat(npm): add experimental entrypoint

* chore: add changeset

---------

Co-authored-by: Josh Black <joshblack@users.noreply.github.com>

.changeset/tiny-melons-march.md

@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+Add @primer/react/experimental entrypoint as an alternative to drafts

experimental/package.json

@@ -0,0 +1,8 @@
+{
+  "_comment1": "this is required only for typescript. once this is fixed https://github.com/microsoft/TypeScript/issues/33079 we can remove this hack",
+  "name": "@primer/react/experimental",
+  "types": "../lib-esm/experimental/index.d.ts",
+  "main": "../lib-esm/experimental/index.js",
+  "type": "module",
+  "sideEffects": false
+}

package.json

@@ -9,6 +9,10 @@
       "import": "./lib-esm/index.js",
       "require": "./lib/index.js"
     },
+    "./experimental": {
+      "import": "./lib-esm/experimental/index.js",
+      "require": "./lib/experimental/index.js"
+    },
     "./drafts": {
       "import": "./lib-esm/drafts/index.js",
       "require": "./lib/drafts/index.js"

rollup.config.js

@@ -13,6 +13,9 @@ const input = new Set([
   // "."
   'src/index.ts',
 
+  // "./experimental"
+  'src/experimental/index.ts',
+
   // "./drafts"
   'src/drafts/index.ts',
 

src/experimental/index.ts

@@ -0,0 +1 @@
+export * from '../drafts'