chore(project): use karma-webpack for testing

* no need to transform test via browserify
* works 🍰

package.json

@@ -39,10 +39,6 @@
     "*.css"
   ],
   "devDependencies": {
-    "babel-core": "^6.26.0",
-    "babel-preset-env": "^1.6.1",
-    "babelify": "^8.0.0",
-    "browserify": "^14.5.0",
     "chai": "^4.1.2",
     "chai-match": "^1.1.1",
     "cpx": "^1.5.0",
@@ -52,7 +48,6 @@
     "execa": "^0.8.0",
     "jsondiffpatch": "^0.1.26",
     "karma": "^2.0.2",
-    "karma-browserify": "^5.3.0",
     "karma-chrome-launcher": "^2.1.1",
     "karma-env-preprocessor": "^0.1.1",
     "karma-firefox-launcher": "^1.0.1",
@@ -62,12 +57,14 @@
     "karma-safari-launcher": "^1.0.0",
     "karma-sinon-chai": "^1.3.2",
     "karma-spec-reporter": "0.0.31",
+    "karma-webpack": "^3.0.0",
     "mkdirp": "^0.5.1",
     "mocha": "^5.2.0",
     "mocha-test-container-support": "0.2.0",
     "npm-run-all": "^4.1.2",
     "phantomjs-prebuilt": "^2.1.12",
     "puppeteer": "^0.13.0",
+    "raw-loader": "^0.5.1",
     "rollup": "^0.57.1",
     "rollup-plugin-commonjs": "^9.1.0",
     "rollup-plugin-json": "^2.3.0",
@@ -77,8 +74,7 @@
     "rollup-plugin-uglify": "^3.0.0",
     "sinon": "^4.4.6",
     "sinon-chai": "^2.14.0",
-    "stringify": "^5.2.0",
-    "watchify": "^3.11.0"
+    "webpack": "^4.16.0"
   },
   "dependencies": {
     "bpmn-font": "^0.8.0",

test/config/karma.unit.js

@@ -32,17 +32,16 @@ module.exports = function(karma) {
     basePath: basePath,
 
     frameworks: [
-      'browserify',
       'mocha',
       'sinon-chai'
     ],
 
     files: [
-      'test/{spec,integration}/**/*Spec.js'
+      'test/suite.js'
     ],
 
     preprocessors: {
-      'test/{spec,integration}/**/*Spec.js': [ 'browserify', 'env' ]
+      'test/suite.js': [ 'webpack', 'env' ]
     },
 
     reporters: [ 'spec' ],
@@ -65,25 +64,29 @@ module.exports = function(karma) {
     singleRun: true,
     autoWatch: false,
 
-    // browserify configuration
-    browserify: {
-      debug: true,
-      paths: [ absoluteBasePath ],
-      transform: [
-        [ 'babelify', {
-          global: true,
-          babelrc: false,
-          presets: [ 'env' ]
-        } ],
-        [ 'stringify', {
-          global: true,
-          extensions: [
-            '.bpmn',
-            '.xml',
-            '.css'
+
+    webpack: {
+      mode: 'development',
+      module: {
+        rules: [
+          {
+            test: /\.css|\.bpmn$/,
+            use: 'raw-loader'
+          }
         ]
-        } ]
+      },
+      resolve: {
+        mainFields: [
+          'dev:module',
+          'browser',
+          'module',
+          'main'
+        ],
+        modules: [
+          'node_modules',
+          absoluteBasePath
         ]
       }
+    }
   });
 };

test/suite.js

@@ -0,0 +1,3 @@
+var allTests = require.context('.', true, /(spec|integration).*Spec\.js$/);
+
+allTests.keys().forEach(allTests);