prpl

prpl is a little library I made in around May of 2021 to help with a script I was writing. As I added more external dependencies, I expanded it to work with .catch() and .finally(). (I still use it internally in my projects today.)

Basically, it allows you to pass extra arguments to promise reject and resolve functions. Assume the following promise and callback:

function add(x, y) {
  return x + y;
}

const promise = new Promise((re, reject) => {
  request(1);
});

Without prpl, you'd need to do something like this:

const other_value_in_scope = 2;
promise.then((value) => add(value, other_value_in_scope));

This is inefficient (it creates an anonymous function for no reason) and is very verbose. However, with prpl, this is simplified to:

const other_value_in_scope = 2;
prpl(promise).then(value, other_value_in_scope);

This is still imperfect (it creates a new function behind the scenes), but is more flexible and most definitely simpler.

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