npm-linkdependencies/src/utils/process/index.js

Tool to help with npm package development

function printErrorBanner() {
  console.log(`
  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  !                                                                                                                    !
  !                                            PROGRAM ENCOUNTERED AN ERROR                                            !
  !                                                                                                                    !
  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  `)
}

function exitWithCode(code) {
  return function() {
    const messageArray = Object.keys(arguments)
      .map((key) => (typeof arguments[key] === "string") ? arguments[key] : JSON.stringify(arguments[key]));
    const message = messageArray.join("\n\r");
    if (message) {
      if (code === 0) {
        console.log(message);
      } else {
        printErrorBanner();
        console.error(message);
      }
    }
    console.log("\nExiting link-dependencies...");
    process.exit(code);
  }
}

module.exports = {
  exit: {
    npmLinkError: exitWithCode(5),
    npmInstallError: exitWithCode(4),
    initialNpmLinkError: exitWithCode(3),
    configurationValidationError: exitWithCode(2),
    genericError: exitWithCode(1),
    success: exitWithCode(0)
  }
};