tsconfig.json

{
    "compilerOptions": {
      // Target latest version of ECMAScript.
      "target": "esnext",
      // Search under node_modules for non-relative imports.
      "moduleResolution": "node",
      // Process & infer types from .js files.
      "allowJs": true,
      // Don't emit; allow Babel to transform files.
      "noEmit": true,
      // Enable strictest settings like strictNullChecks & noImplicitAny.
      // "strict": true,
      "noImplicitAny": true,
      "noImplicitThis": true,
      "strictNullChecks": true,
      "alwaysStrict": false,
      "strictBindCallApply": true,
      "strictFunctionTypes": true,
      "strictPropertyInitialization": false,
      "suppressImplicitAnyIndexErrors": true,
      // Disallow features that require cross-file information for emit.
      "isolatedModules": true,
      // Import non-ES modules as default imports.
      "esModuleInterop": true,
      // Allow default imports from modules with no default export (e.g 
      // import React from "React")
      "allowSyntheticDefaultImports": true,
      // Include modules imported with .json extension.
      "resolveJsonModule": true,
      // Library files to be used in the project
      "lib": [
        "esnext"
      ],
      // Specifies module code generation
      "module": "esnext",
      // List of folders to include type definitions from.
      "typeRoots": [
        "./src/**/*.d.ts"
      ],
      "skipLibCheck": true,
      // Emite source map for Babel
      "inlineSourceMap": true,
      // "inlineSources": true
    },
    "include": [
      "./src/**/*"
    ],
    "exclude": [
      "./build",
      "./node_modules"
    ]
}