Promises are a central mechanism for handling ... (I’m not going to muddy the waters by showing an old-fashioned JavaScript function-with-argument-callback. Take my word for it, that gets ...

If you’re returning information from a then or catch handler, it will always be wrapped in a promise, if it isn’t a promise already. So, you never need to write code like this: If you are ...

Its purpose is to let developers test if a JavaScript object is a "Promise," with the function returning a boolean result of yes or no when used in production. Despite being just two lines of code ...