tsconfig.json

{
    "compilerOptions": {
        "target": "esnext",
        "module": "esnext",
        "lib": ["ESNext", "DOM"],
        "allowJs": true,
        "checkJs": true,
        "emitDeclarationOnly": true,
        "outDir": "lib/",
        "declaration": true,
        "rootDir": "src/",
        "strict": true,
        "noImplicitAny": true,
        "noUnusedLocals": true,
        "noUnusedParameters": false,
        "downlevelIteration": true,
        "noImplicitReturns": true,
        "noFallthroughCasesInSwitch": true,
        "moduleResolution": "node",
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "forceConsistentCasingInFileNames": true
    },
    "include": ["src"]
}