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: "An example of all the operators in the preceding table can be found at rx_combinations.ts, rx_error_handing.ts, and rx_filtering.ts."

A block of code is set as follows:

let asyncReq1=await axios.get('https://jsonplaceholder.typicode.com/posts/1');
console.log(asyncReq1.data);
let asyncReq2=await axios.get('https://jsonplaceholder.typicode.com/posts/1');
console.log(asyncReq2.data);

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

sudo dpkg -i <file>.deb
sudo apt-get install -f # Install dependencies

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: "Open up your instance and then go to the Load Balancing | Load balancers tab."

Warnings or important notes appear like this.

Tips and tricks appear like this.