Conventions used

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

CodeInText: 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: "The following tsconfig.json file is used".

A block of code is set as follows:

{
  "compilerOptions": {
    "target": "ES2015", 
    "module": "commonjs", 
    "sourceMap": true, 
    "outDir": "./script", 
  }
}

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

{
  "compilerOptions": {
    "target": "ES2015", 
    "module": "commonjs", 
    "sourceMap": true, 
    "outDir": "./script", 
  }
}

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

npx create-react-app chapter03 --scripts-version=react-scripts-ts

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Typically, Angular is used to create Single-Page Applications (SPAs), whereby small sections of the client are updated rather than having to reload the whole page when a navigation event happens."