tsconfig.json

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "include": [
    "src/**/*.ts"
  ],
  "compilerOptions": {
    "target": "ES5",
    "module": "ESNext",
    "strict": true,
    "outDir": "dist",
    "declarationDir": "types",
    "declaration": true,
    "noEmit": false,
    "removeComments": false,
    "lib": [
      "ESNext",
      "DOM"
    ],
    // Disallow JavaScript files from being imported.
    "allowJs": false,
    // Enable node-style module resolution, for things like npm package imports.
    "moduleResolution": "node",
    // Enable JSON imports.
    "resolveJsonModule": true,
    // Enable stricter transpilation for better output.
    "isolatedModules": true,
    // Properly support importing CJS modules in ESM
    "esModuleInterop": true,
    // Report an error when importing a file using a casing different from the casing on disk.
    "forceConsistentCasingInFileNames": true,
    // Skip typechecking libraries and .d.ts files.
    "skipLibCheck": true,
    // Error when a value import is only used as a type.
    "verbatimModuleSyntax": true,
    // Report errors for fallthrough cases in switch statements.
    "noFallthroughCasesInSwitch": true,
    // Force functions designed to override their parent class to be specified as `override`.
    "noImplicitOverride": true,
    // Force functions to specify that they can return `undefined` if a possible code path does not return a value.
    "noImplicitReturns": true,
    // Report an error when a variable is declared but never used.
    "noUnusedLocals": true,
    // Report an error when a parameter is declared but never used.
    "noUnusedParameters": true,
    // Force the usage of the indexed syntax to access fields declared using an index signature.
    "noUncheckedIndexedAccess": true,
    // Report an error when the value `undefined` is given to an optional property that doesn't specify `undefined` as a valid value.
    "exactOptionalPropertyTypes": true,
    // Report an error for unreachable code instead of just a warning.
    "allowUnreachableCode": false,
    // Report an error for unused labels instead of just a warning.
    "allowUnusedLabels": false
  }
}