tsconfig.json

{
    "compilerOptions": {
        // match output dir to input dir. e.g. dist/index instead of dist/src/index
        "rootDir": "src/",
        "outDir": "dist/",
        "pretty": true,
        "target": "ES2019",
        "module": "ESNext",
        "moduleResolution": "node",
        // transpile JSX to React.createElement
        "jsx": "react",
        "lib": [
            "DOM",
            "DOM.Iterable",
            "ES2019"
        ],
        "allowJs": true,
        "incremental": true,
        "tsBuildInfoFile": "tsconfig.tsbuildinfo",
        // output .d.ts declaration files for consumers
        "declaration": true,
        "declarationMap": true,
        "strictNullChecks": true,
        "strictPropertyInitialization": true,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        // significant perf increase by skipping checking .d.ts files, particularly those in node_modules. Recommended by TS
        "skipLibCheck": true,
        "preserveConstEnums": true,
        "allowSyntheticDefaultImports": true,
        "importHelpers": true,
        // ensure type imports are side-effect free by enforcing that `import type` is used
        "importsNotUsedAsValues": "preserve",
        // interop between ESM and CJS modules. Recommended by TS
        "esModuleInterop": true,
        // prevent the use features that do not work with isolated transpilation
        "isolatedModules": true,
        // stricter type-checking for stronger correctness. Recommended by TS
        "strict": true,
        // error out if import and file system have a casing mismatch. Recommended by TS
        "forceConsistentCasingInFileNames": true,
        "resolveJsonModule": true
    },
    "include": [
        "src",
        "types"
    ]
}