Add metro.config.js to tsconfig excluded files

[tallpants]

In the latest RC of React Native (0.59.0-rc.3) a metro.config.js file is created with the following content:

/**
 * Metro configuration for React Native
 * https://github.com/facebook/react-native
 *
 * @format
 */

module.exports = {
  transformer: {
    getTransformOptions: async () => ({
      transform: {
        experimentalImportSupport: false,
        inlineRequires: false,
      },
    }),
  },
};

When you run tsc, it fails with this error:

metro.config.js:8:1 - error TS1208: Cannot compile namespaces when the '--isolatedModules' flag is provided.

8 module.exports = {
  ~~~~~~


Found 1 error.

This PR fixes that error by excluding the metro.config.js file just like we did for babel.config.js.

[emin93]

Hi @tallpants,

Nice catch! There are actually more changes incoming for RN 0.59, I created a branch if you want to check it out.