Too Many Parameters (ARCH3181)

Key typescript.quality.too-many-parameters · Severity warning · Category quality

Functions with many parameters are easy to misorder at the call site and hard to read. Related parameters should be grouped into a parameter object, or dependencies injected.

Incorrect

function createUser(
  name: string, email: string, age: number,
  country: string, city: string, zip: string,
  isAdmin: boolean, newsletter: boolean
) {
  // ...
}

Correct

interface CreateUserInput {
  name: string; email: string; age: number;
  address: { country: string; city: string; zip: string };
  isAdmin: boolean; newsletter: boolean;
}

function createUser(input: CreateUserInput) {
  // ...
}

Fix

Group related parameters into a single parameter (options) object.