tsconfig.json

{
  "compilerOptions": {
    /* Visit https://aka.ms/tsconfig.json to read more about this file */
    // Recommended Node options have been incorporated from https://github.com/tsconfig/bases/blob/master/bases/node14.json

    // Node LTS Fermium (14.x) has mostly complete support for ES2019 (as reported by https://node.green/)
    "target": "ES2019",
    "module": "commonjs",
    // "esModuleInterop": true,

    // Overrides default in order to remove "dom" because this package shouldn't assume the presence of browser APIs
    "lib": ["ES2019"],

    // Emit location
    "outDir": "build",

    // Emit sourcemaps
    "declarationMap": true,
    "sourceMap": true,
    "inlineSources": true,

    // Emit type definitions
    "declaration": true,

    // Strict mode
    "strict": true,

    // Allow import package.json
    "resolveJsonModule": true,

    // Linter style rules
    "noUnusedLocals": false, // Disabled because we use eslint for this.
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedIndexedAccess": true,
    "noPropertyAccessFromIndexSignature": true,
    "forceConsistentCasingInFileNames": true,

    "esModuleInterop": true
  },

  "include": ["src/**/*", "test/**/*"]
}