basics.flow

/* @flow */

// uncomment this comment :) // flowlint unclear-type:error
// SEE https://flow.org/en/docs/linting/rule-reference/#toc-unclear-type

// "any" type - not very helpful
const foo: any = 42;

foo.bar.baz

// primitives

const name: string = "kubajz";
const age: number = 30;
const falsy: boolean = false;

// object
type Person = { name: string, surname: string, sex: "MALE" | "FEMALE" }

const variables: Person = {
  name: "Jarda",
  surname: "Kubicek",
  sex: "MALE",
};

// function
const getName = (person: Person) => {
  return person.name;
};