Run test suite in Node.js. Switch to using c8 for test coverage instead of istanbul; it seems to be the current recommended coverage package.

In order to run in Node, I had to add "type": "module" to the package.json. This had some knock-on effects, like I had to make import statements in the tests ECMAScript-compliant by adding file extensions. I then also had to rename config files that use CommonJS-style require() instead of import to the .cjs extension.

Author: yagni

.c8rc.json

@@ -0,0 +1,5 @@
+{
+    "include": ["src/"],
+    "reporter": ["html"],
+    "report-dir": "coverage"
+}

.eslintrc.js .eslintrc.cjs.eslintrc.js renamed to .eslintrc.cjs

@@ -1,5 +1,5 @@
 module.exports = {
-  'parser': 'babel-eslint',
+  'parser': '@babel/eslint-parser',
   'env': {
     'browser': true,
     'es6': true,

config/karma/karma-base.js config/karma/karma-base.cjsconfig/karma/karma-base.js renamed to config/karma/karma-base.cjs

@@ -1,5 +1,5 @@
 const path = require('path');
-const webpackConfig = require('../webpack');
+const webpackConfig = require('../webpack/index.cjs');
 
 /* eslint no-process-env:0 */
 process.env.CHROME_BIN = require('puppeteer').executablePath();
@@ -12,16 +12,13 @@ delete webpackConfig.output.library;
 webpackConfig.module.rules.push({
   test: /\.js$/,
   include: path.resolve('./src/'),
-  loader: 'babel-loader',
-  options: {
-    plugins: ['babel-plugin-istanbul']
-  }
+  loader: 'babel-loader'
 });
 
 module.exports = {
   basePath: '../../',
   frameworks: ['mocha'],
-  reporters: ['progress', 'coverage'],
+  reporters: ['progress'],
   files: [
     'test/**/*_test.js'
   ],
@@ -30,8 +27,7 @@ module.exports = {
     'karma-webpack',
     'karma-mocha',
     'karma-chrome-launcher',
-    'karma-firefox-launcher',
-    'karma-coverage'
+    'karma-firefox-launcher'
   ],
 
   preprocessors: {
@@ -48,15 +44,5 @@ module.exports = {
       timings: false,
       errorDetails: true
     }
-  },
-
-  coverageReporter: {
-    dir: './coverage',
-    reporters: [
-      {type: 'html', subdir: 'html'},
-      {type: 'lcov', subdir: '.'},
-      {type: 'text', subdir: '.', file: 'text.txt'},
-      {type: 'text-summary', subdir: '.', file: 'text-summary.txt'}
-    ]
   }
 };

config/karma/karma-chrome.js config/karma/karma-chrome.cjsconfig/karma/karma-chrome.js renamed to config/karma/karma-chrome.cjs

@@ -1,4 +1,4 @@
-const extendConfiguration = require('./karma-extend.js');
+const extendConfiguration = require('./karma-extend.cjs');
 
 module.exports = function (config) {
   'use strict';

config/karma/karma-coverage.js

@@ -1,4 +1,4 @@
-const baseConfig = require('./karma-base.js');
+const baseConfig = require('./karma-base.cjs');
 
 module.exports = function (extendedConfig) {
   'use strict';

config/karma/karma-coveralls.js

@@ -1,4 +1,4 @@
-const extendConfiguration = require('./karma-extend.js');
+const extendConfiguration = require('./karma-extend.cjs');
 
 module.exports = function (config) {
   'use strict';

config/karma/karma-extend.js config/karma/karma-extend.cjsconfig/karma/karma-extend.js renamed to config/karma/karma-extend.cjs

@@ -1,4 +1,4 @@
-const extendConfiguration = require('./karma-extend.js');
+const extendConfiguration = require('./karma-extend.cjs');
 
 module.exports = function (config) {
   'use strict';

config/karma/karma-firefox.js config/karma/karma-firefox.cjsconfig/karma/karma-firefox.js renamed to config/karma/karma-firefox.cjs

@@ -1,5 +1,5 @@
 const path = require('path');
 const env = process.env.ENV || 'dev';
-const config = require(`./webpack-${env}`);
+const config = require(`./webpack-${env}.cjs`);
 
 module.exports = config;