wallaby.js

'use strict'
let wallabify = require('wallabify')
let babelify = require('babelify')
let babel = require('babel')
let es6ToEs5Preprocessor = file => babel
      .transform(file.content, {sourceMap: true, filename: file.path, stage: 2})

let wallabyPostProcessor = wallabify({
  entryPatterns: ['./src/**/*.spec.js']
},
function (b) {
  b.transform(babelify, {
    extensions: ['.jsx', '.js']
  })
})

module.exports = function (wallaby) {
  return {
    files: [
      {pattern: 'node_modules/babel-polyfill/dist/polyfill.js', instrument: false},
      {pattern: 'src/utils/karma.polyfill.js', instrument: false},
      {pattern: 'src/**/*.js', load: false},
      {pattern: 'src/**/*.jsx', load: false},
      {pattern: 'src/**/*.json', instrument: false},
      {pattern: 'src/**/*.spec.js', ignore: true}
    ],

    tests: [
      {pattern: './src/**/*.spec.js', load: false}
    ],

    postprocessor: wallabyPostProcessor,

    testFramework: 'jasmine',

    setup: function () {
      // required to trigger tests loading
      window.__moduleBundler.loadTests()
    },

    preprocessors: {
      'src/**/*.js': es6ToEs5Preprocessor,
      'src/**/*.spec.js': es6ToEs5Preprocessor,
      'src/**/*.jsx': es6ToEs5Preprocessor
    },

    compilers: {
      'src/**/*.js': wallaby.compilers.babel({
        stage: 2
      }),
      'src/**/*.spec.js': wallaby.compilers.babel({
        stage: 2
      }),
      'src/**/*.jsx': wallaby.compilers.babel({
        stage: 2
      })
    },

    debug: true
  }
}

Also, are you using babel 5? I'm asking about the babel version because the boilerplate project you have referenced is using Babel 6. But you have configured your wallaby babel compiler as you are using babel 5 (passing stage: 2). If you are using babel 6 and you have .babelrc file, you need just this: compilers: {'src/**/*.js*': wallaby.compilers.babel()} (or pass correct babel 6 options, like presets, etc.).

@ArtemGovorov the project uses babel 5 and is shrink-wrapped. Unfortunately the boilerplate has since moved ahead and updated to babel 6. I will try to put up a sample repo with exactly the same setup my as my environment and ping you. Sorry about the confusion.

@nim23 Github doesn't send out notifications for being mentioned in a gist, so please share the link to the sample repo by creating an issue in our repo.