tsconfig.json

{
    "compilerOptions": {
        "baseUrl": "./",
        "allowJs": false,
        "checkJs": false,
        "emitDeclarationOnly": false,
        "inlineSourceMap": true,
        "declarationMap": false,
        "composite": true,
        "declaration": true,
        "emitDecoratorMetadata": true,
        "esModuleInterop": true,
        "experimentalDecorators": true,
        "allowSyntheticDefaultImports": true,
        "noImplicitAny": false,
        "preserveSymlinks": true,
        "pretty": true,
        "sourceMap": false,
        "strictPropertyInitialization": false,
        "strictNullChecks": true,

        "forceConsistentCasingInFileNames": true,
        "inlineSources": false,
        "module": "ESNext",
        "target": "ES5",
        "moduleResolution": "bundler",
        "jsx": "react-jsx",
        "jsxImportSource": "preact",

        "useDefineForClassFields": true,
        "lib": ["ES2020", "DOM", "DOM.Iterable"],
        "skipLibCheck": true,
        "allowImportingTsExtensions": true,
        "resolveJsonModule": true,
        "isolatedModules": true,
        "noEmit": true,
        "strict": true,
        "downlevelIteration": true,
        "noUnusedLocals": false,
        "noUnusedParameters": false,
        "noFallthroughCasesInSwitch": true,
        "types": ["node"],
        "paths": {
            "$/*": ["src/*"],
            "%/*": ["src/types/*"]
        }
    },
    "include": ["src", "demo"],
    "references": [{ "path": "./tsconfig.node.json" }]
}