create common config files folder

.gitignore

@@ -1,4 +1,5 @@
-node_modules
+node_modules/
+po/
 .idea
 .DS_Store
 .eslintcache

babel.config.js

@@ -1,4 +1,4 @@
-module.exports = {
-    presets: ['@babel/preset-env'],
-    plugins: ['@babel/plugin-proposal-object-rest-spread', '@babel/plugin-transform-runtime']
-};
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const baseConfig = require('./configs/babel.config.base');
+
+module.exports = baseConfig;

configs/babel.config.base.js

@@ -0,0 +1,8 @@
+module.exports = {
+    presets: ['@babel/preset-env', '@babel/preset-react', '@babel/preset-typescript'],
+    plugins: [
+        '@babel/plugin-proposal-object-rest-spread',
+        '@babel/plugin-transform-runtime',
+        'transform-require-context' // this plugin is here only to make Jest tests run
+    ]
+};

configs/jest.config.base.js

@@ -0,0 +1,14 @@
+module.exports = {
+    globals: {
+        FEATURE_FLAGS: ''
+    },
+    setupFilesAfterEnv: ['./rtl.setup.js'],
+    verbose: true,
+    moduleDirectories: ['node_modules'],
+    transform: {
+        '^.+\\.(js|tsx?)$': 'babel-jest'
+    },
+    collectCoverage: true,
+    collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}'],
+    transformIgnorePatterns: ['node_modules/(?!(proton-shared)/)']
+};

package.json

@@ -55,6 +55,7 @@
     "@babel/plugin-transform-runtime": "^7.6.2",
     "@typescript-eslint/eslint-plugin": "^1.13.0",
     "@typescript-eslint/parser": "^1.13.0",
+    "babel-plugin-transform-require-context": "^0.1.1",
     "eslint": "^6.7.2",
     "eslint-config-airbnb-base": "^14.0.0",
     "eslint-plugin-import": "^2.18.2",

tsconfig.json

@@ -1,3 +1,3 @@
 {
-    "extends": "./tsconfig.base.json"
+    "extends": "./configs/tsconfig.base.json"
 }