improve logic for detecting new package version

Author: alex-titarenko

.github/workflows/release.yml

@@ -54,11 +54,7 @@ jobs:
           PACKAGE_VERSION="$(node -p -e "require('./package.json').version")"
           PACKAGE_NAME="$(node -p -e "require('./package.json').name")"
           FOUND_VERSION=$(npm view $PACKAGE_NAME versions | grep \'$PACKAGE_VERSION\')
-
-          if ! $FOUND_VERSION
-          then
-            echo "IS_NEW_VERSION=true" >> $GITHUB_ENV
-          fi
+          if ! [[ $FOUND_VERSION ]]; then echo "IS_NEW_VERSION=true" >> $GITHUB_ENV; fi
 
       - name: Publish package
         if: env.IS_NEW_VERSION == 'true'