Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "In this example, we used the describe method to create a group for two tests related to math problems."

A block of code is set as follows:

export default {
  'home.recents': 'Recent opportunities',
  'greetings.hello': 'Hello',
  'greetings.welcome': 'welcome',
};

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

async function login(page: Page) {
  await page.goto('http://localhost:8000');
  await page.waitForNavigation();
  await page.type('#username', '[e-mail]');
  await page.type('#password', 'user');
  await page.click('#loginbtn');
}

Any command-line input or output is written as follows:

yarn add -D puppeteer

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: "The Opportunities page allows users to browse and register a new sale opportunity."

Tips or Important Notes

Appear like this.