about/tsconfig.json

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{
  "compilerOptions": {
    "target": "es2015",
    "module": "commonjs",
    "outDir": "./dist",
    "rootDir": "src",
    "strict": true,
    "jsx": "react",
    "strictNullChecks": true,
    "declaration": true,
    "sourceMap": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "experimentalDecorators": true,
    "resolveJsonModule": true
  },
  "include": ["src"],
  "exclude": ["node_modules", "**/*.spec.ts"]
}