Task failing out with "Cannot read property 'src' of undefined" error about grunt-contrib-concat

[CasperAlant]

I ran into the same issue. In my case it was because I accidentally installed grunt-concat instead of grunt-contrib-concat. Uninstalling grunt-concat fixed the issue.

[tkellen]

Run npm cache clean and reinstall grunt and you should be good to go.

On Nov 15, 2012, at 1:37 PM, Matt Dawson [email protected] wrote:

Hi all -

I've been successfully running contrib-concat version 0.1.0 on a project.
When upgrading to 0.1.1, I'm suddenly getting the error

Warning: Cannot read property 'src' of undefined Use --force to continue.

when running my concat targets. The config I'm using for concat can be
found here: https://gist.github.com/4080345

Matt

—
Reply to this email directly or view it on
GitHubhttps://github.com//issues/1.

[mathiasbynens]

I’m having the same issue. Running npm cache clean and reinstalling grunt (npm uninstall grunt && npm install grunt) didn’t make a difference.

[tkellen]

We just released a new version of Grunt on monday. Have you seen:
http://gruntjs.com/getting-started
?

[mathiasbynens]

In my case it was caused by still using Task#file (pre-0.4.0 style) instead of iterating over Task#files: http://gruntjs.com/api/inside-tasks#inside-multi-tasks

[vergissberlin]

This issue should be almost alive. I have the same problem with a fresh install:

concat: {
            options: {
                separator: ';',
                stripBanners: true,
                banner: '/*! <%= pkg.name %> - v<%= pkg.version %> - ' +
                '<%= grunt.template.today("yyyy-mm-dd") %> */',
                footer: '\n/*! <%= pkg.name %> - v<%= pkg.version %> - ' +
                '<%= grunt.template.today("yyyy-mm-dd") %> */\n'
            },
            dev: {
                files: {
                    'appChrome/js/Vendor.min.js': [
                        'app/Vendor/firebase/firebase.js',
                        'app/Vendor/jquery/dist/jquery.js',
                        'app/Vendor/jasmine/lib/jasmine-core/jasmine.js',
                        'app/Vendor/jasmine-jquery/lib/jasmine-jquery.js',
                        'app/Vendor/jasmine-jstd-adapter/src/JasmineAdapter.js',
                        'app/Vendor/mootools-core/dist/mootools-core.min.js'
                    ],
                    'appWeb/js/Vendor.min.js': [
                        'app/Vendor/firebase/firebase.js',
                        'app/Vendor/jquery/dist/jquery.min.js',
                        'app/Vendor/jasmine/lib/jasmine-core/jasmine.js',
                        'app/Vendor/jasmine-jquery/lib/jasmine-jquery.js',
                        'app/Vendor/jasmine-jstd-adapter/src/JasmineAdapter.js',
                        'app/Vendor/pnotify/*.js'
                    ]
                }
            },
            prod: {
                files: {
                    'appChrome/js/Vendor.min.js': [
                        'app/Vendor/firebase/firebase.js',
                        'app/Vendor/jquery/dist/jquery.js',
                        'app/Vendor/mootools-core/dist/mootools-core.js'
                    ],
                    'appWeb/js/Vendor.min.js': [
                        'app/Vendor/firebase/firebase.js',
                        'app/Vendor/jquery/dist/jquery.js',
                        'app/Vendor/pnotify/*.js'
                    ]
                }
            }
        },