RN >= 0.59 support

Author: mppperez

README.md

@@ -12,7 +12,7 @@ or
 
 ## Usage
 
-### /rn-cli.config.js
+### /metro.config.js
 
 ```diff
  module.exports = {

package.json

@@ -10,6 +10,8 @@
     "@types/app-root-path": "^1.2.4",
     "@types/babel-core": "^6.25.3",
     "@types/babel-generator": "^6.25.1",
+    "babel-traverse": "^6.26.0",
+    "babylon": "^6.18.0",
     "@types/node": "^9.3.0",
     "@types/semver": "^5.4.0",
     "app-root-path": "^2.0.1",

src/getMetroTransformer.ts

@@ -44,7 +44,9 @@ function getReactNativeMinorVersion(): number {
 export function getMetroTransformer(
   reactNativeMinorVersion: number = getReactNativeMinorVersion(),
 ): MetroTransformer {
-  if (reactNativeMinorVersion >= 56) {
+  if (reactNativeMinorVersion >= 59) {
+    return require('metro-react-native-babel-transformer/src/index')
+  } else if (reactNativeMinorVersion >= 56) {
     return require("metro/src/reactNativeTransformer")
   } else if (reactNativeMinorVersion >= 52) {
     return require("metro/src/transformer")