Both Grunt and gulp are task runners in JavaScript built on node. Grunt runs tasks by transforming files and saves as new ones in temporary folders. The output of one task is taken as input for another and on until itthe output reaches the destination folder. This involves a lot of I/O calls and many temporary files. Whereas gulp streams through the file system and does not require these temporary locations. Since it streams the data it also decreases the number of I/O calls and also improves performance. Grunt uses configuration files to perform tasks whereas gulp requires its build file to consist of code. In grunt, each plugin needs to be configured to match its input ___location to the previous plugin’s output. In gulp, the plugins are automatically pipe-lined.
