component-limit.js

// example - valid: true
angular.module('myModule').controller('SomeController', function() {
    // ...
});

// example - valid: true
angular.module('myModule').directive('myDirective', function() {
    // ...
});

// example - valid: false, errorMessage: "There may be at most 1 AngularJS component per file, but found 2"
angular.module('myModule').controller('ControllerOne', function() {
    // ...
}).directive('directiveTwo', function() {
    // ...
});

// example - valid: true, options: [3]
angular.module('myModule').controller('ControllerOne', function() {
    // ...
}).directive('directiveTwo', function() {
    // ...
}).factory('serviceThree', function() {
    // ...
});

// example - valid: false, options: [3], errorMessage: "There may be at most 3 AngularJS components per file, but found 4"
angular.module('myModule').controller('ControllerOne', function() {
    // ...
}).directive('directiveTwo', function() {
    // ...
}).factory('serviceThree', function() {
    // ...
}).filter('filterFour', function() {
    // ...
});