SystemJS and KarmaJS: TypeError: System.import is not a function - karma-runner

Question

I am trying to get my project working with Karma and SystemJS. I am using the karma-systemjs plugin with karma.
I keep getting the error below about System.import.
I believe it is because SystemJS is not being loaded by the time the karma-systemjs plugin runs. Please tell me what I am doing wrong.
Project structure
SystemJS configuration (system.conf.js)
System.config({
baseUrl: '',
defaultJSExtensions: true,
map: {
'jquery': 'vendor/kendo/js/jquery.min.js',
'angular': 'vendor/kendo/js/angular.js',
'kendo': 'vendor/kendo/js/kendo.all.min.js',
'angular-mocks': 'vendor/bower_components/angular-mocks/angular-mocks.js',
'angular-ui-router': 'vendor/bower_components/angular-ui-router/release/angular-ui-router.min.js',
'angular-toastr': 'vendor/bower_components/angular-toastr/dist/angular-toastr.tpls.min.js',
'angular-local-storage': 'vendor/bower_components/angular-local-storage/dist/angular-local-storage.min.js'
},
paths: {
'systemjs': 'vendor/bower_components/system.js/dist/system.js',
'system-polyfills': 'vendor/bower_components/system.js/dist/system-polyfills.js'
},
meta: {
'vendor/kendo/js/jquery.min.js': {
format: 'global',
exports: '$'
},
'vendor/kendo/js/angular.js': {
format: 'global',
deps: [
'vendor/kendo/js/jquery.min.js'
],
exports: 'angular'
},
'vendor/kendo/js/kendo.all.min.js': {
format: 'global',
deps: [
'vendor/kendo/js/angular.js'
],
exports: 'kendo'
},
'vendor/bower_components/angular-ui-router/release/angular-ui-router.min.js': {
format: 'global',
deps: [
'vendor/kendo/js/angular.js'
]
},
'vendor/bower_components/angular-mocks/angular-mocks.js': {
format: 'global',
deps: [
'vendor/kendo/js/angular.js'
],
exports: 'angular.mock'
},
'vendor/bower_components/angular-toastr/dist/angular-toastr.tpls.min.js': {
format: 'global',
deps: [
'vendor/kendo/js/angular.js'
]
},
'vendor/bower_components/angular-local-storage/dist/angular-local-storage.min': {
format: 'global',
deps: [
'vendor/kendo/js/angular.js'
]
}
}
});
Promise.all([
System.import('kendo'),
System.import('angular-mocks'),
System.import('angular-ui-router'),
System.import('angular-toastr'),
System.import('angular-local-storage')
]).then(function () {
System.import('angular')
.then(function (angular) {
System.import('ng/app/app.module')
.then(function (app) {
angular.bootstrap(document, ['s9.app']);
}, function (err) {
console.log(err);
});
}, function (err) {
console.log(err);
});
});
//# sourceMappingURL=system.conf.js.map
karma.conf.js
// Karma configuration
var configure = function (config) {
config.set({
// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: '.',
transpiler: null,
// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: ['systemjs', 'jasmine'],
systemjs: {
// Path to your SystemJS configuration file
configFile: 'system.conf.js',
// Patterns for files that you want Karma to make available, but not loaded until a module
// requests them. eg. Third-party libraries.
serveFiles: [
'vendor/kendo/js/**/*.js',
'vendor/bower_components/**/*.js',
'ng/**/*.js',
'test/**/*Spec.js'
],
config: {
paths: {
'systemjs': 'vendor/bower_components/system.js/dist/system.js',
'system-polyfills': 'vendor/bower_components/system.js/dist/system-polyfills.js'
}
}
},
// list of files / patterns to load in the browser
files: [
{pattern: 'vendor/kendo/js/**/*.js', included: false},
{pattern: 'vendor/bower_components/**/*.js', included: false},
{pattern: 'ng/**/*.js', included: false},
{pattern: 'test/**/*Spec.js', included: false}
],
// list of files to exclude
exclude: [],
// preprocess matching files before serving them to the browser
// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
preprocessors: {},
// test results reporter to use
// possible values: 'dots', 'progress'
// available reporters: https://npmjs.org/browse/keyword/karma-reporter
reporters: ['progress'],
// web server port
port: 9876,
// enable / disable colors in the output (reporters and logs)
colors: true,
// level of logging
// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
logLevel: config.LOG_DEBUG,
// enable / disable watching file and executing tests whenever any file changes
autoWatch: true,
// start these browsers
// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
browsers: ['PhantomJS'],
// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: false,
// Concurrency level
// how many browser should be started simultaneous
concurrency: Infinity
});
};
module.exports = configure;
//# sourceMappingURL=karma.conf.js.map
Error

Answer 1

I fixed this by moving the bootstrap code out of the config code. Apparently when using the karma-systemjs plugin System.import is not available yet when this is called (although it is at normal runtime).
What I did: I moved the bootstrap code (i.e. Promise.all([....) into into a separate file called bootstrap.js (name is not important) and then in my index.html I added them in this order:
Also from this link (the karma system js plugin author says): https://github.com/rolaveric/karma-systemjs/issues/71
I see the problem. It's because you've got your bootstrapping code
(eg. System.import() calls) inside your SystemJS config file -
system.conf.js karma-systemjs expects just a simple System.config()
call that it can then intercept to find out where your transpiler and
polyfills are. It does this by evaluating your config file with a fake
System object which simply records whatever is passed to
System.config(). This fake object has no System.import() method, which
causes your error.
I'd recommend moving your bootstrapping code into a separate file (I
personally put it in a script tag with my HTML). Otherwise you'll run
into similar problems if you try to use systemjs-builder, and you
probably don't want angular.bootstrap() to be called at the start of
your unit tests.