Example for linting rules.

examples.ts

type standardFunction = (arg1: number, arg2: number) => number

// Should be okay
const add: standardFunction = (arg1, arg2) => arg1 + arg2 // Types can be inferred from 'standardFunction'
const addLater = (
  arg1: number,
  arg2: number
): (() => Promise<number>) => async () => arg1 + arg2 // Return type of promise can be inferred from type definition of 'addLater'

// Should not be okay
const add2 = (arg1: number, arg2: number) => arg1 + arg2 // Return type is not explictly declared.