Karma,Jasmine,JSPM, Babel base.preset error - karma-jasmine

Question

I am trying to use Karma, Jasmine, JSPM, and Babel all together. It seems I am getting an error I am not sure how to trace:
12 04 2016 19:59:04.407:ERROR [preprocessor.babel]: [BABEL] /Users/allen/work/twentytwenty.qualboard/src/TwentyTwenty.QualBoard.Web/wwwroot/config.js: Unknown option: base.preset. Check out http://babeljs.io/docs/usage/options/ for more info
It barks about config.js and the option base.preset. I am not sure why thought I have done a complete project search for base.preset and cannot find its existence.
Karma Config:
module.exports = function(config) {
config.set({
autoWatch: false,
babelPreprocessor: {
options: {
preset: ['es2015'],
sourceMap: 'inline',
},
},
basePath: '',
browsers: [
'PhantomJS',
],
colors: true,
concurrency: Infinity,
coverageReporter: {
type: 'html',
dir: 'converage/',
},
exclude: [],
files: [],
frameworks: [
'jspm',
'jasmine',
],
jspm: {
config: './wwwroot/config.js',
packages: './wwwroot/jspm_packages',
loadFiles: [
'test/**/*.js',
],
serveFiles: [
'test/**/*.js',
],
},
logLevel: config.LOG_INFO,
plugins: [
'karma-babel-preprocessor',
'karma-coverage',
'karma-jasmine',
'karma-jspm',
'karma-phantomjs-launcher',
'karma-spec-reporter',
],
port: 9876,
preprocessors: {
'./wwwroot/config.js': ['babel'],
'./wwwroot/aurelia/**/*.js': ['babel'],
'./wwwroot/test/**/*.js': ['babel', 'coverage'],
},
proxies: {
'/wwwroot/': '/TwentyTwenty.Qualboard.Web/wwwroot/',
'/jspm_packages/': '/wwwroot/jspm_packages',
},
reporters: [
'coverage',
'spec',
],
singleRun: true,
specReporter: {
maxLogLines: 1,
suppressErrorSummary: true,
suppressFailed: false,
suppressPassed: false,
supressSkipped: false,
},
});
};
My BabelRc:
{
"presets": ["es2015"]
}
I am starting Karma in the terminal by doing:
karma start
What am I missing?

Answer 1

You have a typo, it is presets and not preset:
babelPreprocessor: {
options: {
presets: ['es2015'],
sourceMap: 'inline',
},
}