Switch from yarn to pnpm

Author: htunnicliff

.gitignore

@@ -112,9 +112,5 @@ dist
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
 
-# yarn v2
-.yarn/cache
-.yarn/unplugged
-.yarn/build-state.yml
-.yarn/install-state.gz
-.pnp.*
+yarn.lock
+package-lock.json

package.json

@@ -36,8 +36,7 @@
     "build": "rimraf dist && tsc",
     "type-check": "tsc --pretty --noEmit",
     "test": "jest",
-    "preversion": "yarn test",
-    "version": "yarn build"
+    "version": "pnpm test && pnpm build"
   },
   "devDependencies": {
     "@babel/core": "^7.17.5",
@@ -67,7 +66,6 @@
     "next": ">=10"
   },
   "volta": {
-    "node": "16.13.2",
-    "yarn": "1.22.17"
+    "node": "16.13.2"
   }
 }