Ensure dist is rebuilt before publish

Author: JakeSidSmith

package.json

@@ -14,7 +14,8 @@
     "prettier-check": "prettier --check '**/*.{ts,tsx,js,jsx}'",
     "prettier": "prettier --write '**/*.{ts,tsx,js,jsx}'",
     "tests": "jest",
-    "test": "npm run lint && npm run typecheck && npm run tests -- --runInBand --coverage"
+    "test": "npm run lint && npm run typecheck && npm run tests -- --runInBand --coverage",
+    "prepublishOnly": "npm run dist"
   },
   "repository": {
     "type": "git",