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: "Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system."

A block of code is set as follows:

function find<T>(arr: T[], filter: (i: T) => boolean) {
    return arr.filter(filter);
}

find(heroes, (h) => h.name === "Spiderman");

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

const valueOfThis = { name: "Anakin", surname: "Skywalker" };
const greet = person.greet.bind(valueOfThis);
greet.call(valueOfThis, "Mos espa", "Tatooine");
greet.apply(valueOfThis, ["Mos espa", "Tatooine"]);
// Hi, my name is Remo Jansen. I'm from Mos espa Tatooine.

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

npm install ramda @types/ramda

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."