tsconfig.json

{
    "compilerOptions": {
        // Project's typechecking options
        "strict": true,
        "strictPropertyInitialization": false,

        // These options support running tsx + ts-node
        "module": "Node16",
        "moduleResolution": "Node16",
        "target": "es2021",
        "lib": ["es2021", "DOM"],

        "experimentalDecorators": true,
        "useDefineForClassFields": false,

        // required to import ".ts" files (for ts-node/esm, deno, and VSCode)
        "allowImportingTsExtensions": true,

        // required for allowImportingTsExtensions to work w/VSCode; pkgroll
        // doesn't work with emitDeclarationOnly, but works ok with noEmit)
        "noEmit": true,

        // Don't document internals
        "stripInternal": true,
        "newLine": "lf"
    },
    "ts-node": {
        "esm": true,
        "transpileOnly": true,
        "experimentalSpecifierResolution": "node"
    },
    "exclude": ["./specs/*"],
    "include": [
        "./src/*.ts", "./specs/*.ts",
    ]
}