Sonar Config

1. .Jenkinsfile config

    stage('SonarQube analysis') {
        steps {
          script {
            scannerHome = tool 'SonarScanner4';
          }
          withSonarQubeEnv('SonarQube') {
            sh "${scannerHome}/bin/sonar-scanner"
          }
        }
      }

2. sonar-project.properties

    sonar.projectBaseDir=test-app // app dir
    sonar.projectName=test-app
    sonar.projectKey=test-app
    sonar.projectVersion=1.0
    sonar.sourceEncoding=UTF-8
    sonar.language=js
    sonar.sources=src
    sonar.tests=test
    sonar.exclusions=test/**,node_modules/**,build/**,**/less/**,**/config/**,**/config.js,**/imgs/** // files not to test
    sonar.test.inclusions=test/shared/*.js,test/components/**/*.js // files to test
    sonar.javascript.lcov.reportPaths=coverage/lcov.info //coverage path
    sonar.testExecutionReportPaths=coverage/test-report.xml  //unit test path       

3. package.json

    "jestSonar": {
    "reportPath": "coverage", // same with path in  sonar-project.properties file
    "reportFile": "test-report.xml", // same with path in  sonar-project.properties file
    "sonar56x": true // to get coverage data for sonarQ 5.6.*

   }

4. jest.config.js

    module.exports = Object.assign(jestConfig, {
     coverageThreshold: {
        global: {
          branches: 95,
          functions: 95,
          lines: 95,
          statements: 95,
        },
    },
      testResultsProcessor: 'jest-sonar-reporter',
    });

5. .eslintrc

    {
      "parser": "babel-eslint",
      "extends": [ "plugin:sonarjs/recommended"],
      "plugins": ["sonarjs"],
      "rules": {
        "eol-last": ["error", "always"],
        "sonarjs/cognitive-complexity": ["error", 25],
        "sonarjs/no-duplicate-string": "off",
        "sonarjs/no-identical-functions": "off"
      }
    }       

fiels:

1. jest-sonar-reporter

2. eslint-plugin-sonarjs

3. sonarqube file