paulodutra

import React from 'react'

export const Checkbox = ({ label} : {label: string}) => {
  const [value, setValue] = React.useState(false);
  return (
    <label style={{
        padding: "1rem",
        border: value ? "2px solid #8D2" : "2px solid #F70" 
    }}>
        <input 

paulodutra

import React from 'react';
import { Button } from './Button';
import { Input } from './Input';
import { Checkbox } from './Checkbox';

function App() {
  const [total, setTotal] = React.useState(0)
  const [data, setData] = React.useState('');

  function increment() {

paulodutra

import React, { useEffect } from 'react';
import { Button } from './Button';

function App() {
  const [total, setTotal] = React.useState(0);
  return (
     <div>
       <p>Total: {total}</p>
       <Button increment={setTotal} />
     </div>

paulodutra

import React from 'react'

type ButtonProps = {
    increment: React.Dispatch<React.SetStateAction<number>>
}
export const Button = ({increment }: ButtonProps) => {
  return <button onClick={() => increment((number) => number + 1)}>Increment</button>
}

paulodutra

First way, object using module.exports

module.exports = {
  sum: function(a,b){
     return a + b;
  },
  sub: function(a,b){
    return a - b; 
  }
  

paulodutra

{
  "compilerOptions": {
    "module": "commonjs",
    "declaration": true,
    "removeComments": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    "target": "ES2021",
    "sourceMap": true,

paulodutra

module.exports = {
  preset: 'ts-jest', 
  moduleFileExtensions: ['js', 'json', 'ts', 'node'],
  rootDir: 'src',
  testRegex: '.*\\.spec\\.ts$',
  transform: {
    '^.+\\.(t|j)s$': 'ts-jest',
  },
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/$1',

paulodutra

{
  "moduleFileExtensions": ["js", "json", "ts"],
  "rootDir": "../",
  "testEnvironment": "node",
  "testRegex": ".e2e-spec.ts$",
  "transform": {
    "^.+\\.(t|j)s$": "ts-jest"
  },
  "moduleNameMapper": {
    "^@/(.*)$": "<rootDir>/src/$1",

paulodutra

version: '3.8'
services:
  mysql:
    image: mysql:8.0
    container_name: mysql
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: nestjs_testing
      MYSQL_USER: user
      MYSQL_PASSWORD: user

paulodutra

import { registerAs } from '@nestjs/config';
import { TypeOrmModuleOptions } from '@nestjs/typeorm';

export const inMemoryDatabaseConfig = registerAs(
  'database.inMemory',
  (): TypeOrmModuleOptions => ({
    type: 'sqlite',
    database: ':memory',
    entities: [
      __dirname +