tsconfig.json

{
    "compilerOptions": {
        // _ Type Checking
        "allowUnreachableCode": false,

        "allowUnusedLabels": false,
        "alwaysStrict": true,
        "exactOptionalPropertyTypes": true,
        "noFallthroughCasesInSwitch": true,
        "noImplicitAny": true,
        "noImplicitOverride": true,
        "noImplicitReturns": true,
        "noImplicitThis": true,
        "noPropertyAccessFromIndexSignature": true,
        "noUncheckedIndexedAccess": true,
        "noUnusedLocals": true,
        "strict": true,
        "strictBindCallApply": true,
        "strictFunctionTypes": true,
        "strictNullChecks": true,
        "strictPropertyInitialization": true,
        "useUnknownInCatchVariables": true,

        // _ Modules
        "module": "ESNext",

        // _ Interop Constraints
        "forceConsistentCasingInFileNames": true
    },
    "files": ["types/index.d.ts"]
}