fvilante

/*
const Url =
    Safe<string>({
        validation: [] //fix: introduce validation
        validOperations: [getfullPath]
    }  

*/

// assures T is a primitive type

fvilante

// assures T is a primitive type
type TPrimitive<T> =
    T extends number ? number :
    T extends string ? string :
    // object, array, etc . . .
    // else
    never

type Safe<TKind extends string, T> = {
    kind: TKind

fvilante

let f = x => x

fvilante

namespace mapStream_ {


    export interface EventGenerator {
        onEvent: (h: EventHandler) => void
    }

    type Food = string
    export type Event = Food

fvilante

    
  // A study on alternative forms to name Typescript Type parameters

  // original thread: https://twitter.com/sompylasar/status/1102446254292983808

    
  // *********************************
  //        T,U,V convention 
  // *********************************
    

fvilante

namespace Maybe_ { 

    type Undefined = typeof Undefined 
    const Undefined = Symbol.for("None") // undefined

    interface Just<T> { 
        readonly type: "Just", 
        readonly val: T | Undefined 
    }
    

fvilante

interface Node_<T> {
    readonly value: T
    readonly childreen: ReadonlyArray<Node_<T>> | undefined
}


const state: Node_<string> = {
  value: "foo",
    childreen: [
        {

fvilante

namespace Maybe_ { 

    type n = Extract
    type Undefined = typeof Undefined 
    const Undefined = Symbol.for("None") // undefined

fvilante

Say we have a prop.users of the shape:

const users = [
    {username: 'bob', age: 30, tags: [{name: 'work', id: 1}, {name: 'boring', id: 2}]},
    {username: 'jim', age: 25, tags: [{name: 'home', id: 3}, {name: 'fun', id: 4}]},
    {username: 'jane', age: 30, tags: [{name: 'vacation', id: 5}, {name: 'fun', id: 4}]}
];

fvilante

// an organized way to initialize your application
// extract from this article: https://medium.freecodecamp.org/why-you-should-use-functional-composition-for-your-full-applications-eb7b702ffd4a

import config from './config';
import Database from './Database';
import Models from './Models';
import Server from './Server';

function startApplication() {
  const env = config();