tsconfig.json

{
    "compilerOptions": {
        "target": "ESNext",
        "moduleResolution": "Node",
        "module": "ESNext",
        "allowJs": true,
        "jsx": "react-jsx",
        "allowSyntheticDefaultImports": true,
        "noEmit": true,
        "resolveJsonModule": false,
        "strictFunctionTypes": true,
        "noImplicitAny": false,
        "noFallthroughCasesInSwitch": true,
        "allowUnreachableCode": true,
        "forceConsistentCasingInFileNames": true,
        "useUnknownInCatchVariables": false,
        "skipLibCheck": true,
        "experimentalDecorators": true,
        "strictBindCallApply": true,
        // this the only options that allows smooth transition from js to ts (by not dropping types from js files)
        // however might need to consider includeing *only needed libraries* instead of using this
        "maxNodeModuleJsDepth": 1,
        "strictNullChecks": true,
    },
    "include": [
        "src",
        "cypress",
    ],
    "exclude": [
        "node_modules"
    ]
}