Jonathan Fraimorice yonifra

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Console Debugging

These useful methods will allow you advanced console debugging while you interact with the editor. This is super useful in cases where you want to see the effects of certain operations on the DAL state (Thanks @Mervyn Kaplan!)

dsAdapter.logDalValueChangesForNamespaces

// log changes in these three namespaces
dsAdapter.logDalValueChangesForNamespaces(['DESKTOP', 'MOBILE', 'data'])
// log changes in all namespaces

Adds a placeholder

const addSlotsPlaceholder = destination => {
    const finalDestination = destination ? destination : documentServices.pages.getCurrentPage()
    const placeholderStructure = documentServices.components.buildDefaultComponentStructure('wixui.SlotsPlaceholder')
    return documentServices.components.add(finalDestination, placeholderStructure)
}

	it('should work', async () => {
	const {ds} = await prepareTest()
	const {viewerManager} = ds.adapter.host
	const {ps} = ds.adapter

	const REF_COMP_ID = 'refCompId'
	const INFLATED_PLACEHOLDER_ID = `${REF_COMP_ID}_r_placeholderId`
	const INFLATED_SLOTS_QUERY_ID = `${REF_COMP_ID}_r_placeholderId_slots-1`
	const INFLATED_PLACEHOLDER_POINTER = {id: INFLATED_PLACEHOLDER_ID, type: 'DESKTOP'}

	{
	"version": "0.2.0",
	"configurations": [
	{
	"name": "Debug Jest Tests",
	"type": "node",
	"request": "launch",
	"runtimeExecutable": "/Users/jonathanfr/.nvm/versions/node/v14.18.1/bin/node",
	"args": [
	"--runInBand",

	{
	"[dart]": {
	"editor.formatOnSave": true,
	"editor.formatOnType": true,
	"editor.rulers": [
	80
	],
	"editor.selectionHighlight": false,
	"editor.suggest.snippetsPreventQuickSuggestions": false,
	"editor.suggestSelection": "first",

	{
	"actions": [
	{
	"id": "variants-kf5ecy56",
	"namespace": "variants",
	"op": "ADD",
	"value": {
	"id": "variants-kf5ecy56",
	"metaData": {
	"isHidden": false,

	import React, { Component } from 'react';

	Class ParentComponent extends Component{
	constructor(props){
	super(props);
	this.state = {
	title: "CodeFights",
	description: "Online website"
	}
	}

	// Define a state

	this.state = {
	name: "Jon Snow",
	age: 28
	}

	// get value of the state

	this.state.name

	{
	"scripts": [],
	"styles": []
	}