Unexpected keyword 'const'. Const declarations are not supported in strict mode

Current Behavior

When running a new app using haul with Typescript I get Unexpected keyword 'const'. Const declarations are not supported in strict mode.. This appears to have happened previously in https://github.com/callstack/haul/issues/159, but according to that ticket it was solved several versions ago by excluding pretty-format in 58c17ff. I’m on the latest version of haul and am seeing it happen.

Expected Behavior

The error doesn’t occur.

Haul Configuration (webpack.haul.js)

I followed the Typescript setup instructions:

webpack.haul.js:

module.exports = ({ platform }, { module, resolve }) => ({
  entry: `./index.js`,
  module: {
    ...module,
    rules: [
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'babel-loader',
          },
          {
            loader: 'ts-loader'
          },
        ],
      },
      ...module.rules
    ]
  },
  resolve: {
    ...resolve,
    extensions: [
      '.ts',
      '.tsx',
      `.${platform}.ts`,
      '.native.ts',
      `.${platform}.tsx`,
      '.native.tsx',
      ...resolve.extensions],
  },
});

tsconfig.json:

{
  "compilerOptions": {
    "declaration": false,
    "lib": ["es2015"],
    "module": "es6",
    "moduleResolution": "node",
    "jsx": "react",
    "target": "es2015",
    "allowSyntheticDefaultImports": true,
    "strictNullChecks": true,
    "noImplicitThis": true,
    "baseUrl": "."
  },
  "exclude": [
    "node_modules"
  ],
  "compileOnSave": false
}

.babelrc:

{
  "presets": ["react-native"]
}

Your Environment

software	version
Haul	1.0.0-beta.13
react-native	0.55.1
node	both 9.11.1 and 8.11.1
yarn	1.3.2

Thanks for any help!

[mortada-codes]

I am still facing this error when running android release?

[deepsweet]

Happens to me as well since RN 0.54, and I found the problematic file: node_modules/metro/src/lib/bundle-modules/MetroClient.js, so now we have an additional lib to traspile explicitly.

Added metro to node_modules/haul/src/utils/makeReactNativeConfig.js and it works:

test: /\.js$/,
exclude: /node_modules\/(?!react|@expo|pretty-format|haul|metro)/,