chore: check GH_TOKEN is set in publish commands

package.json

@@ -18,9 +18,10 @@
     "packages-install": "lerna exec -- yarn install --frozen-lockfile",
     "packages-build": "lerna run build",
     "test:watch": "yarn test --watch --collect-coverage=false",
-    "publish": "lerna publish --conventional-commits --exact --create-release github",
-    "prerelease": "lerna publish --conventional-commits --conventional-prerelease --exact --create-release github",
-    "graduate": "lerna publish --conventional-commits --conventional-graduate --exact --create-release github",
+    "check-gh-token": ": \"${GH_TOKEN:?Please set GH_TOKEN to a GitHub personal token that can create releases.}\"",
+    "publish": "yarn check-gh-token && lerna publish --conventional-commits --exact --create-release github",
+    "prerelease": "yarn check-gh-token && lerna publish --conventional-commits --conventional-prerelease --exact --create-release github",
+    "graduate": "yarn check-gh-token && lerna publish --conventional-commits --conventional-graduate --exact --create-release github",
     "lint": "eslint .",
     "coveralls": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
     "integration": "jest --runInBand --config jest.integration.config.json --setupTestFrameworkScriptFile=./jest.integration.setup.js",