Run grunt build command on Travis CI - node.js

Question

I am using Travis CI to test and build my project and as part of it I want travis to run grunt build i have tried the following but have had no luck.
script: "grunt build"
script: "./node_modules/grunt build"
script: "./node_modules/grunt/grunt build"
script: "./node_modules/grunt/grunt.js build"

Answer 1

Have you made sure to install grunt-cli globally on your Travis node?
My Travis CI config looks like:
language: node_js
node_js:
- "0.8"
before_install: npm install -g grunt-cli
install: npm install
before_script: grunt build
And my package.json:
{
...
"scripts": {
"test": "grunt test"
},
...
}
I will explain the flow of steps that Travis will execute:
The first step to be executed is the before_install. My only prerequisite (besides node.js) is grunt-cli so I use this step to install it.
Next is the install step, in my case this will simply install my npm modules
The before script is then executed, running grunt build
Lastly Travis will look for scripts in the package.json, there I indicated the test step should run grunt test
I'd like to note that this is my own opinion on how to configure Travis. I'm certainly not inclining you should use exactly the same approach.

Answer 2

You likely miss in your travis.yml file:
before_script:
- npm install -g grunt-cli
Then "grunt whatever" should execute ok (assuming you do require grunt in your devDependencies in your package.json).
(see http://www.mattgoldspink.co.uk/2013/02/10/using-travis-ci-with-grunt-0-4-x/)

Answer 3

Make sure that you have grunt as part of your devDependencies. Here is a sample file: https://github.com/fraxedas/raspi-cloud/blob/master/package.json
"devDependencies": {
"grunt": "^0.4.5",
"grunt-contrib-jshint": "^0.11.2",
"grunt-contrib-watch": "^0.6.1"
}
Travis-ci will install grunt on the install step:
npm install
...
grunt#0.4.5 node_modules/grunt
...
In my case I wanted to run jshint with grunt.
Here is my travis.yml file: https://github.com/fraxedas/raspi-cloud/blob/master/.travis.yml
To integrate grunt all I needed was:
before_script: grunt jshint
You can change jshint by another command.

Answer 4

My .travis.yml looks like this:
It runs much faster than npm as NodeJSpackage manager, I'm using Yarnon this example. It installs yarn, grunt cli, rubyand sass.
Hopefully it helps.
language: node_js
node_js:
- "7.1.0"
before_install:
- npm install -g yarn
- yarn add global ruby
- gem install sass
install:
- yarn add global sass
- yarn add global grunt-cli
- yarn add yarn install
before_script: grunt