build.js

/**
 * @author Numax
 * @version 1.1.0
 * This script is used to build all projects that are registered in angular.json
 */

const fs = require('fs');
const { exec } = require('child_process');

fs.readFile(`angular.json`, 'utf8', async (err, data) => {
  if (err) throw err;

  ngCli = JSON.parse(data);

  var projects = Object.keys(ngCli.projects).filter((project) => project.indexOf('e2e') === -1);

  console.log('Updating OpenAPI');

  await updateOpenAPI().then(
    (resolve) => {
      console.log("OpenAPI has been successfully updated!")
    },
    (reject) => {
      console.log(reject);
      process.exit(1);
    }
  );

  console.log();
  console.log('Building projects ' + projects.join(','));
  console.log();

  for (var i = 0; i < projects.length; i += 1) {
    let promises = [];
    promises.push(buildProject(projects[i]));
    console.log('Building project ' + projects[i]);
    await Promise.all(promises).then(
      (statusCode) => {
        console.log('Project ' + projects[i] + ' built successfully!');

        if (i + 1 === projects.length) {
          process.exit(0);
        }
      },
      (reject) => {
        console.log(reject);
        process.exit(1);
      }
    );
  }
});

function updateOpenAPI(){
  return new Promise((resolve, reject) => {
    var cmd = exec("npm run build-openapi-prod");



    cmd.on("error", (er) => {
      console.log(er);
    });

    cmd.stdout.on('data', (data) => {
      console.log(data.toString());
    });

    cmd.stderr.on('data', (data) => {
      console.log(data)
    });

    cmd.on('close', (code) => {
      if (code === 0) {
        resolve(code);
      } else {
        reject(code);
      }
    });
  });
}


function buildProject(project) {
  return new Promise((resolve, reject) => {
    var params = exec(`ng build --project ${project} --extract-licenses --build-optimizer --output-hashing none`);

    params.on('error', (er) => {
      console.log(er);
    });

    params.stdout.on('data', (data) => {
      console.log(data.toString());
    });

    params.stderr.on('data', (data) => {
      process.stdout.write('.');
    });

    params.on('close', (code) => {
      if (code === 0) {
        resolve(code);
      } else {
        reject(code);
      }
    });
  });
}