tsconfig.base.json

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "baseUrl": "./",
    "checkJs": false,

    // Ensure that .d.ts files are created by tsc, but not .js files
    "declaration": true,
    "emitDeclarationOnly": false,
    // Ensure that Babel can safely transpile files in the TypeScript project
    "isolatedModules": false,

    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "useDefineForClassFields": false,
    "jsx": "react-jsx",
    "lib": ["ES6", "dom"], // "ES6", "DOM" | "es2015", "dom"
    "module": "esnext", // esnext | commonjs
    "moduleResolution": "node",
    "noImplicitAny": false,
    "noImplicitThis": false,
    "outDir": "lib",
    "pretty": true,
    "removeComments": true,
    "skipLibCheck": true,
    "sourceMap": true,
    "strict": true,
    "strictNullChecks": false,
    "target": "es5", // esnext | es5
    "downlevelIteration": true,
    "resolveJsonModule": true
  },
  "exclude": [
    "node_modules",
    "dist",
    "packages/**/dist",
    "packages/**/lib",
    "packages/**/lib-esm",
    "packages/docs",
    "packages/docs/**/*",
    "snippets",
    "examples"
  ]
}