react-map-gl/tsconfig.es5.json

{
  "compilerOptions": {
    "target": "es5",
    "jsx": "react",
    "moduleResolution": "node",
    "module": "commonjs",
    "downlevelIteration": true,
    "declaration": true,
    "sourceMap": true,
    "outDir": "./dist/es5"
  },
  "include": [
    "src/**/*"
  ]
}