tsconfig.test.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "module": "CommonJS",
    // Target latest version of ECMAScript.
    "checkJs": false,
    "noEmit": true,
    "target": "es2018",
    // Search under node_modules for non-relative imports.
    "moduleResolution": "node",
    // Process & infer types from .js files.
    "allowJs": true,
    // Enable strictest settings like strictNullChecks & noImplicitAny.
    "strict": true,
    // Disallow features that require cross-file information for emit.
    "isolatedModules": true,
    // Import non-ES modules as default imports.
    "esModuleInterop": true,
    "sourceMap": true,
    "noImplicitAny": false,
    "types": ["react", "jest"],
    "jsx": "react",
    "lib": ["dom", "ES2020.String"]
  },
  "exclude": [
    "node_modules",
    "dist",
    "lib",
    "webpack"
  ],
  "include": [
    "src"
  ]
}