sindresorhus

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

1. Use ESM yourself. (preferred)
   Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
2. If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
3. Stay on the existing version of the package until you can move to ESM.

ENvironmentSet

/** If you want to know how to encoding HKTs in typescript, check this: 
    https://gist.github.com/ENvironmentSet/1662a140f99381bc85fd6be51ecdcbb5
    
    Sorry for messy names, this was only PoC.                            **/

export interface HKT {
  param: unknown;
  result: unknown;
}

ENvironmentSet

export interface HKT {
  param: unknown;
  result: unknown;
}

interface NotHKT extends HKT {
  result: this['param'] extends true ? false : true;
}

interface FstHKT extends HKT {

ENvironmentSet

// Sorry for poor naming, this example was intented to explain how to use skolem capturing in practise.

interface Stateful<S, A> {
  (state: S): [A, S] 
}

function fmap<S, A, B>(f: (a: A) => B): (stateful: Stateful<S, A>) => Stateful<S, B> {
  return stateful => state => {
    const [a, nextState] = stateful(state);

epicallan

A series of reading lists mostly related to functional programming.

agarwalparas

# First, you must get the previous commit sha, the one before the forced push:

## Hit through terminal
curl -u <username> https://api.github.com/repos/:owner/:repo/events

# Then you can create a branch from this sha:

## Hit through terminal
curl -u <github-username> -X POST -d '{"ref":"refs/heads/<new-branch-name>", "sha":"<sha-from-step-1>"}' https://api.github.com/repos/:owner/:repo/git/refs

VictorTaelin

async/await is just the do-notation of the Promise monad

CertSimple just wrote a blog post arguing ES2017's async/await was the best thing to happen with JavaScript. I wholeheartedly agree.

In short, one of the (few?) good things about JavaScript used to be how well it handled asynchronous requests. This was mostly thanks to its Scheme-inherited implementation of functions and closures. That, though, was also one of its worst faults, because it led to the "callback hell", an seemingly unavoidable pattern that made highly asynchronous JS code almost unreadable. Many solutions attempted to solve that, but most failed. Promises almost did it, but failed too. Finally, async/await is here and, combined with Promises, it solves the problem for good. On this post, I'll explain why that is the case and trace a link between promises, async/await, the do-notation and monads.

First, let's illustrate the 3 styles by implementing

DmitrySoshnikov

// by Dmitry Soshnikov

ES7:

== Lexical environment ==

  - Environment Record
  - parent (can be null)

== Environment Record ==

mroderick

How to add an image to a gist

1. Create a gist if you haven't already.
2. Clone your gist:

   # make sure to replace `<hash>` with your gist's hash
   git clone https://gist.github.com/<hash>.git # with https
   git clone git@gist.github.com:<hash>.git     # or with ssh

xnuk

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