Check Javascript file Merge is enable using Magento 2 by isMergeJsFiles() from the ConfigInterface.
To Merge JavaScript files in Magento 2 via admin panel,
Go To Admin panel,
Click Stores -> Settings -> Configuration from the left sidebar.
Click on Advanced -> Select Developer Tab,
Open the JavaScript Settings section,
Choose Yes from the Merge JavaScript Files.
Click Save Config from the top right. Continue reading “How to check JavScript merge is enabled programmatically Magento 2?”