fix: allow typescript v4

* ignoring pnpm & webstorm files

* fix: allow typescript 4: issues/246

* Update package.json

Co-authored-by: Christian Kaisermann <[email protected]>

Author: btakita

Diff for: .gitignore

@@ -5,4 +5,6 @@ dist/
 .yarn/cache
 .yarn/unplugged
 .yarn/build-state.yml
-.pnp.*
+.pnp.*
+pnpm-lock.yaml
+.idea

Diff for: package.json

@@ -106,7 +106,7 @@
     "sass": "^1.26.8",
     "stylus": "^0.54.7",
     "svelte": "^3.23.0",
-    "typescript": "^3.9.5"
+    "typescript": "^3.9.5 || ^4.0.0"
   },
   "peerDependenciesMeta": {
     "@babel/core": {