tsconfig.json

{
    // Based on the tsconfig defaults in create-react-app.
    "compilerOptions": {
        // Target latest version of ECMAScript.
        "target": "esnext",
        "lib": ["dom", "dom.iterable", "esnext"],

        // Prevent Typescript from type-checking the entire imported library as not every library provides perfect types.
        "skipLibCheck": true,

        // Allow to import CommonJS modules like ES6 modules spec
        "esModuleInterop": true,
        "allowSyntheticDefaultImports": true,

        // Enable strict type checking options
        "strict": true,

        // Disallow inconsistently-cased references to the same file.
        "forceConsistentCasingInFileNames": true,

        // Use ESNext module code generation
        "module": "esnext",

        // Modules should get resolved in a Node.js way.
        "moduleResolution": "node",

        // Include modules imported with .json extension.
        "resolveJsonModule": true,

        // Perform additional checks to ensure that separate compilation (@babel/plugin-transform-typescript) is safe.
        "isolatedModules": true,

        // Do not emit outputs because Webpack is compiling the code.
        "noEmit": true,

        // Support JSX language in .tsx files.
        "jsx": "react"
    },
    "include": ["Core/Js"]
}