tsconfig.json

{
    "references": [
        {
            "path": "./src/backend"
        },
        {
            "path": "./src/api"
        },
        {
            "path": "./src/types"
        },
        {
            "path": "./playground"
        }
    ],
    "compilerOptions": {
        "outDir": "out",
        // emit
        "target": "ES2019",
        "module": "ESNext",
        "incremental": true,
        "sourceMap": true,
        "declaration": true,
        "declarationMap": true,
        "useDefineForClassFields": true,
        "stripInternal": true,
        // type
        "lib": ["DOM", "DOM.Iterable", "ES2019", "ESNext"],
        "skipLibCheck": true,
        // project reference
        "composite": true,
        // module
        "isolatedModules": true,
        "moduleResolution": "Node",
        "esModuleInterop": true,
        // strict
        "strict": true,
        "noFallthroughCasesInSwitch": true,
        "noImplicitAny": true,
        "noImplicitOverride": true,
        "noImplicitReturns": true,
        "noImplicitThis": true,
        "importsNotUsedAsValues": "error",
        "forceConsistentCasingInFileNames": true,
        "typeRoots": ["node_modules/@types"]
    }
}