tsconfig-esm2015.json

{
  "compilerOptions": {
    "declaration": true,
    "declarationDir": "./dist",
    "module": "es2015",
    "target": "es2015",
    "baseUrl": "./src",
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    "moduleResolution": "node",
    "rootDir": "./src",
    "skipLibCheck": true,
    "lib": ["dom", "es2015"],
    "jsx": "react",
    "allowJs": true,
    "sourceMap": true,
    "importHelpers": true,
    "outDir": "./dist/esm2015"
  },
  "files": ["./src/index.ts"],
  "include": [
    "./src/index.d.ts"
  ]
}