tsconfig-base.json

{
  "compilerOptions": {
    // https://node.green/#ES2019
    // https://kangax.github.io/compat-table/es2016plus
    "lib": ["ES2020"],
    "module": "nodenext",
    "target": "ES2019",

    // Does not implicitly import @types/*
    "types": [],

    "noEmit": true,

    "sourceMap": true,

    "newLine": "lf",
    "stripInternal": true,
    "useDefineForClassFields": true,
    "resolveJsonModule": true,

    "esModuleInterop": true,
    "importsNotUsedAsValues": "error",
    "isolatedModules": true,
    "preserveValueImports": true,

    "allowUnreachableCode": false,
    "checkJs": true,
    "exactOptionalPropertyTypes": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUnusedLocals": true,
    "strict": true
  }
}