tsconfig.json

{
    "compilerOptions": {
        "module": "commonjs",
        "target": "ES2015",
        "outDir": "out",
        "lib": ["ES2017", "ES2019.Array"],
        "sourceMap": true,
        "rootDir": "src",
        "types": ["node", "mocha"],
        "esModuleInterop": true,
        "skipLibCheck": true,
        "moduleResolution": "node",
        "strict": true /* enable all strict type-checking options */
        /* Additional Checks */
        // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
        // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
        // "noUnusedParameters": true,  /* Report errors on unused parameters. */
    },
    "exclude": ["node_modules", ".vscode-test", "test_fixtures"],
    "include": ["src/**/*"]
}