How to run Jest programmatically in node.js (Jest JavaScript API)

jest-api.ts

import {runCLI} from 'jest-cli';
import ProjectConfig = jest.ProjectConfig;


const projectRootPath = '/path/to/project/root';

// Add any Jest configuration options here
const jestConfig: ProjectConfig = {
 roots: ['./dist/tests'],
 testRegex: '\\.spec\\.js$'
};

// Run the Jest asynchronously
const result = await runCLI(jestConfig as any, [projectRootPath]);

// Analyze the results
// (see typings for result format)
if (result.results.success) {
  console.log(`Tests completed`);
} else {
  console.error(`Tests failed`);
}