brandonkal

export type PromiseType<T extends Promise<any>> = T extends Promise<infer U>
  ? U
  : never

export type Arguments<T> = T extends (...args: infer U) => infer R ? U : never
export type ReplaceReturn<T, TNewReturn> = (...a: Arguments<T>) => TNewReturn

type Fn = (...args: any[]) => any

export type Go<E extends Error, T extends Fn> = {

int128

Create React App does not provide watching build mode oficially (#1070).

This script provides watching build mode for an external tool such as Chrome Extensions or Firebase app.

How to Use

Create a React app.

Put the script into scripts/watch.js.

yossorion

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

ryanflorence

class AccessibleMatch extends React.Component {
  componentDidMount() {
    this.node.focus()
  }

  render() {
    const { component:Component, ...rest } = this.props
    return <div ref={n => this.node = n} tabIndex="-1"><Component {...rest}/></div>
  }
}

danlopez

{"users":[
  {
    "id":"4e663844e049bd3331000011",
    "first_name":"User",
    "last_name":"Number 7"
  },
  ...
  ]
}

danlopez

{
  "reviewables": [
    {
      "user": {
        "id": "4e4c05b8e049bd2e83000007",
        "first_name": "User",
        "last_name": "Number 3"
      },
      "mini_meet_id": "532895bd96ce8969e10001b1",
      "submission_id": null,

samselikoff

This post is also on my blog, since Gist doesn't support @ notifications.

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Components are taking center stage in Ember 2.0. Here are some things you can do today to make the transition as smooth as possible:

• Use Ember CLI
• In general, replace views + controllers with components
• Only use controllers at the top-level for receiving data from the route, and use Ember.Controller instead of Ember.ArrayController or Ember.ObjectController
• Fetch data in your route, and set it as normal properties on your top-level controller. Export an Ember.Controller, otherwise a proxy will be generated. You can use Ember.RSVP.hash to simulate setting normal props on your controller.

jwo

class Api::RegistrationsController < Api::BaseController
  
  respond_to :json
  def create

    user = User.new(params[:user])
    if user.save
      render :json=> user.as_json(:auth_token=>user.authentication_token, :email=>user.email), :status=>201
      return
    else