tsconfig.json

{
  // https://www.typescriptlang.org/tsconfig/
  "compilerOptions": {
    /* Basic Options */
    "target": "ES2017",
    "module": "CommonJS",
    "removeComments": true,
    "typeRoots": ["./node_modules/@types"],
    "types": ["node"],

    /* Compatibility */
    "resolveJsonModule": true,
    "esModuleInterop": true,
    "allowJs": true,
    "checkJs": false,

    /* Strict Type-Checking Options */
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,

    /* Additional Checks */
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": false,
    "noFallthroughCasesInSwitch": false,

    /* Module Resolution Options */
    "baseUrl": ".",
    "paths": {
      /* Support absolute imports with a leading '/' */
      "/*": ["*"]
    },
    "moduleResolution": "Node",

    // Use esbuild for building
    "noEmit": true, // Write no JS files
    "incremental": false, // Write no .tsbuildinfo file
    "outDir": "build/tsc" // (just in case)
  },

  "include": ["src", "tests", "types", "vitest.config.ts", "esbuild.mjs"],
  "exclude": ["node_modules", "build"],

  // make sure ts-node understands the paths config above
  "ts-node": {
    "require": ["tsconfig-paths/register"]
  }
}