Migrate @emotion/serialize to TypeScript (#2543)

* [serialize]: Convert to Typescript

* fix: Some tests

* chore: Revert unrelated change

* chore: Revert code behaviour changes

* chore: Revert toString method addition

* chore: Changeset

* fix: Add missing return of ComponentSelector

* fix: Export missing interfaces

* small tweaks

* fix stuff

Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>

.changeset/healthy-elephants-serve.md

@@ -0,0 +1,5 @@
+---
+'@emotion/serialize': minor
+---
+
+Source code has been migrated to TypeScript. From now on type declarations will be emitted based on that, instead of being hand-written.

packages/css/types/tests-create-instance.ts

@@ -5,7 +5,7 @@ const emotion0 = createEmotion({ key: 'bar' })
 // $ExpectType Emotion
 const emotion1 = createEmotion({
   key: 'foo',
-  container: document.head!,
+  container: document.head,
   nonce: 'fasefw'
 })
 

packages/serialize/package.json

@@ -4,7 +4,7 @@
   "description": "serialization utils for emotion",
   "main": "dist/emotion-serialize.cjs.js",
   "module": "dist/emotion-serialize.esm.js",
-  "types": "types/index.d.ts",
+  "types": "dist/emotion-serialize.cjs.d.ts",
   "license": "MIT",
   "repository": "https://github.com/emotion-js/emotion/tree/main/packages/serialize",
   "publishConfig": {
@@ -26,8 +26,7 @@
   },
   "files": [
     "src",
-    "dist",
-    "types/*.d.ts"
+    "dist"
   ],
   "browser": {
     "./dist/emotion-serialize.cjs.js": "./dist/emotion-serialize.browser.cjs.js",