Add integration tests for the JavaScript API

babel.config.js

@@ -1,3 +1,18 @@
+let presets;
+let plugins = [];
+
+try {
+  require.resolve('module:@react-native/babel-preset');
+  presets = ['module:@react-native/babel-preset'];
+} catch (err) {
+  presets = [
+    ['@babel/preset-env', { targets: { node: 'current' } }],
+    '@babel/preset-typescript',
+  ];
+  plugins = ['@babel/plugin-transform-flow-strip-types'];
+}
+
 module.exports = {
-  presets: ['module:@react-native/babel-preset'],
+  presets,
+  plugins,
 };

package.json

@@ -28,7 +28,7 @@
   "scripts": {
     "example": "yarn workspace react-native-phone-connectivity-example",
     "watch-example": "yarn workspace react-native-wear-connectivity-example",
-    "test": "jest",
+    "test": "jest --coverage",
     "typecheck": "tsc --noEmit",
     "lint": "eslint \"**/*.{js,ts,tsx}\"",
     "clean": "del-cli android/build example/android/build example/android/app/build example/ios/build lib",
@@ -98,6 +98,11 @@
     "modulePathIgnorePatterns": [
       "<rootDir>/example/node_modules",
       "<rootDir>/lib/"
+    ],
+    "collectCoverage": true,
+    "collectCoverageFrom": [
+      "src/**/*.{ts,tsx}",
+      "!src/**/*.d.ts"
     ]
   },
   "commitlint": {