gruntjs - Grunt index file not running -

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i trying index.html @ root of app (app/index.html) running grunt file inherited.

my grunt file follows:

module.exports = function(grunt) {  // 1. configuration goes here grunt.initconfig({     pkg: grunt.file.readjson('package.json'),     sass_directory_import: {         your_target: {             files: {                 src: ['css/sass/parts/_all.scss']             },         },     },     connect: {       server: {         options: {           port: 9000,           hostname: 'localhost',           base: ['./'],           keepalive: true,           open: {           target: 'http://localhost:9000'         }         }       }     },     sass: {         dist: {             options: {                 loadpath: require('node-bourbon').includepaths,                 sourcemap: true             },             files: {                 'css/style.css' : 'css/sass/style.scss',                 'css/style-ie.css' : 'css/sass/style-ie.scss'             }         },     },     watch: {          sass: {             files: 'css/sass/**/*.scss',             tasks: ['sass_directory_import','sass']         }     } });  // 3. tell grunt plan use plug-in. grunt.loadnpmtasks('grunt-sass'); grunt.loadnpmtasks('grunt-contrib-cssmin'); grunt.loadnpmtasks('grunt-contrib-concat'); grunt.loadnpmtasks('grunt-contrib-uglify'); grunt.loadnpmtasks('grunt-contrib-watch'); grunt.loadnpmtasks('grunt-sass-directory-import'); grunt.loadnpmtasks('grunt-contrib-connect');  // 4. tell grunt when type "grunt" terminal. grunt.registertask('default',['watch', 'connect:server']); grunt.registertask('build',['sass', 'uglify']);

};

i want index appear under port: http://localhost:9000 when run default watch task, sass files being watched changes , nothing else. how grunt run file under given port? have used gulp before , not finding grunt easy work with. there grunt server/connect task not have installed?


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