tsconfig.json

{
    "compilerOptions": {
        "module": "ESNext",
        "target": "ESNext",
        "strict": true,
        "strictFunctionTypes": true,
        "strictNullChecks": true,
        "strictPropertyInitialization": true,
        "noImplicitReturns": true,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "noImplicitAny": true,
        "noImplicitThis": true,
        "noFallthroughCasesInSwitch": true,
        "alwaysStrict": true,
        "verbatimModuleSyntax": true,
        "forceConsistentCasingInFileNames": true,
        "esModuleInterop": true,
        "noEmit": true,
        "jsx": "react-jsx",
        "jsxImportSource": "preact",
        "sourceMap": false,
        "moduleResolution": "Bundler",
        "resolveJsonModule": true,
        "typeRoots": [
            "./types",
            "./node_modules/@types"
        ]
    },
    "include": [
        "./src"
    ]
}