karma+webpack+typescript+mocha require is not defined - phantomjs

Question

I try to configure my environment to run tests on node.
This my my webpack.config.test.js
const serverConfig = {
module: {
loaders: [
{test: /\.tsx?$/, loader: 'ts-loader' }
]
},
target: 'node',
externals:[nodeExternals()],
resolve: {
extensions: ['.ts', '.tsx', '.js']
}
};
module.exports = serverConfig;
karma.config.js
// Karma configuration
// Generated on Tue Jun 27 2017 07:20:43 GMT-0500 (Hora est. Pacífico, Sudamérica)
const webpackConfig=require('./config/webpack/webpack.test');
module.exports = function(config) {
config.set({
basePath: '',
frameworks: ['mocha','es6-shim'],
plugins:[
require("karma-es6-shim"),
'karma-webpack',
'karma-jsdom-launcher',
'karma-mocha',
'karma-spec-reporter',
'karma-jsdom-launcher',
'karma-coverage',
'karma-chrome-launcher',
"karma-phantomjs-launcher",
'karma-htmlfile-reporter'
],
files: [
'test/**/*.spec.ts'
],
coverageReporter: {
webpackMiddleware: {
stats: "errors-only"
},
dir: 'build/coverage/',
reporters: [
{ type: 'html' },
{ type: 'text' },
{ type: 'text-summary' }
]
},
// list of files to exclude
exclude: [
],
preprocessors: {
'test/**/*.spec.ts':["webpack","coverage"]
},
webpack:webpackConfig,
reporters: ['spec','progress','html'],
htmlReporter: {
outputFile: 'tests/units.html',
// Optional
pageTitle: 'Unit Tests',
subPageTitle: 'A sample project description',
groupSuites: true,
useCompactStyle: true,
useLegacyStyle: true
},
// web server port
port: 9876,
colors: true,
autoWatch: true,
browsers: ['PhantomJS'],
singleRun: false,
concurrency: Infinity
})
}
test1
import { DBCONFIG } from './../src/config/db.config';
import { CONEXION } from './../src/config/database/mongo';
import { expect } from 'chai';
describe("#DATABASE",()=>{
it("Esta conectado",()=>{
CONEXION("hola",DBCONFIG.MONGO_URL_LOCAL)
.then(()=>{
expect(1).to.be("1");
})
.catch((e)=>{
expect(1).to.be(e);
})
})
});
test2
import { expect } from 'chai';
describe("#User",()=>{
it("use2r",()=>{
expect(1).to.equal("1");
})
})
When I run mocha + webpack with mocha-webpack, there is no problem the tests are running.
package.json
"test-server": "mocha-webpack --timeout 1000 --webpack-config config/webpack/webpack.test.js test/**/*.spec.ts",
"test":"karma start"
When I do it from karma depending on which browser I use to display the messages I throw similar errors, when I throw it with jsdom or PhantomJS I throw the following
require is not defined o Cannot find
Looking in git, the only answer that solved the problem, is to put in the processors of karma the following.
'test/**/*.spec.ts':["webpack","coverage"]
It is the same way and I have varied, but the error continues.