ld-admin-template/packages/webpack/scripts/utils.ts

import chalk from 'chalk';
import detect from 'detect-port-alt';
import prompts from 'prompts';
import fs from 'fs-extra';
import {outputPath} from '../config/paths.ts';

export function clearConsole() {
  process.stdout.write(
    process.platform === 'win32' ? '\x1B[2J\x1B[0f' : '\x1B[2J\x1B[3J\x1B[H',
  );
}

export function startedServerLogger(port: number, host?: string) {
  console.log();
  console.log(chalk.green('Server started! 🥰'));
  console.log();
  console.log(
    `Network: ${chalk.hex('#db5a6b').bold(`http://${host}:${port}`)}`,
  );
  console.log();
}

export function errorLogger(error: string) {
  console.error(chalk.red(error + ' 😭'));
}

export function junglePort(host: string, defaultPort: number) {
  const isInteractive = process.stdout.isTTY;

  return detect(defaultPort, host).then(
    function(port) {
      return new Promise(function(resolve) {
        if (port === defaultPort) {
          return resolve(port);
        }

        const message = `Something is already running on port ${defaultPort}.`;
        if (isInteractive) {
          clearConsole();
          const question: prompts.PromptObject = {
            type: 'confirm',
            name: 'changePort',
            message:
              chalk.yellow(message)
              + '\nWould you like to run the app on another port instead?',
            initial: true,
          };
          prompts(question).then(function({changePort}) {
            changePort ? resolve(port) : resolve(null);
          });
        } else {
          console.log(chalk.red(message));
          resolve(null);
        }
      });
    },
    function(err: Error) {
      throw new Error(
        chalk.red(`Could not find an open port at ${chalk.bold(host)}.`)
          + '\n'
          + ('Network error message: ' + err.message || err)
          + '\n',
      );
    },
  );
}

export function clearBuildFolder() {
  fs.emptyDirSync(outputPath);
}

export function printBuildError(err: Error) {
  const message = err != null && err.message;
  const stack = err != null && err.stack;

  if (
    stack
    && typeof message === 'string'
    && message.indexOf('from Terser') !== -1
  ) {
    try {
      const matched = /(.+)\[(.+):(.+),(.+)\]\[.+\]/.exec(stack);
      if (!matched) {
        throw new Error('Using errors for control flow is bad.');
      }

      const [, , problemPath, line, column] = matched;
      console.log(
        'Failed to minify the code from this file: \n\n',
        chalk.yellow(
          `\t${problemPath}:${line}${column !== '0' ? ':' + column : ''}`,
        ),
        '\n',
      );
    } catch (ignored) {
      console.log('Failed to minify the bundle.', err);
    }
  } else {
    console.log((message || err) + '\n');
  }

  console.log();
}