🟡 Setup Node Javascript

.eslintrc.json

"rules": {
    "camelcase":"off",
    "no-console":"off",
    "no-unused-vars": "warn",
    "class-methods-use-this": "off",
    "import/prefer-default-export": "off",
    "import/extensions": [
      "error",
      "always",
      {
        "js": "never"
      }
    ],
    "consistent-return": "off"
  },
"settings": {
  "import/resolver": {
    "node": {
      "extensions": [".js"]
    }
  }
}

.gitignore

dist
node_modules
coverage

.lintstagedrc.js

module.exports = {
  '*.js': 'yarn test --findRelatedTests'
}

.sequelizerc

const path = require('path');

module.exports = {
  config: path.resolve(__dirname, 'src', 'config', 'database.js'),
  'migrations-path': path.resolve(__dirname, 'src', 'database', 'migrations')
};

jest.config.js

module.exports = {
  // Stop running tests after `n` failures
  bail: true,

  // Automatically clear mock calls and instances between every test
  clearMocks: true,

  // An array of glob patterns indicating a set of files for which coverage information should be collected
  collectCoverageFrom: [
    'src/controllers/*.js',
    'src/repositories/*.js',
    'src/services/*.js',
    'src/middlewares/*.js',
    'src/validators/*.js',
  ],

  // An array of regexp pattern strings used to skip coverage collection
  coveragePathIgnorePatterns: [
    "/node_modules/"
  ],

  // Indicates which provider should be used to instrument code for coverage
  coverageProvider: 'v8',

  // The test environment that will be used for testing
  testEnvironment: "node",
}

package.json

{
  "name": "my_app",
  "version": "1.0.0",
  "main": "src/server.js",
  "license": "MIT",
  "scripts": {
    "dev": "nodemon src/server.js",
    "test": "NODE_ENV=test jest --runInBand --no-cache",
    "test:coverage": "yarn test --coverage"
  }
}