bvaughn

This API was removed in React 17

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Interaction tracing with React

React recently introduced an experimental profiler API. After discussing this API with several teams at Facebook, one common piece of feedback was that the performance information would be more useful if it could be associated with the events that caused the application to render (e.g. button click, XHR response). Tracing these events (or "interactions") would enable more powerful tooling to be built around the timing information, capable of answering questions like "What caused this really slow commit?" or "How long does it typically take for this interaction to update the DOM?".

With version 16.4.3, React added experimental support for this tracing by way of a new NPM package, scheduler. However the public API for this package is not yet finalized and will likely change with upcoming minor releases, so it should be used with caution.

evancz

A vision for data interchange in Elm

How do you send information between clients and servers? What format should that information be in? What happens when the server changes the format, but the client has not been updated yet? What happens when the server changes the format, but the database cannot be updated?

These are difficult questions. It is not just about picking a format, but rather picking a format that can evolve as your application evolves.

Literature Review

By now there are many approaches to communicating between client and server. These approaches tend to be known within specific companies and language communities, but the techniques do not cross borders. I will outline JSON, ProtoBuf, and GraphQL here so we can learn from them all.

wojteklu

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

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General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules

ebidel

<script src="https://unpkg.com/@webcomponents/custom-elements"></script>

<style>
  body {
    margin: 0;
  }
  /* Style the element from the outside */
  /*
  fancy-tabs {
    margin-bottom: 32px;

rauchg

From zero to microservice with 𝚫 now

The following guide will show you how to deploy a simple microservice written in JavaScript using 𝚫 now.

It uses Open Source tools that are widely available, tested and understood:

• Node.JS
• NPM
• Express

jonathantneal

Remapping the right ALT key to open the emoji selector on Mac

1. Install Karabiner
2. Open Karabiner and go to Misc & Uninstall -> Open private.xml
3. Use the contents of private.xml and save
4. In Karabiner, go to Change Keys -> Reload XML
5. Enable “Option_R to Emoji”
6. 🎉

daneden

How to remap the caps lock key to the emoji selector on Mac

1. Go to System Preferences -> Keyboard -> Modifier Keys...
2. Change “Caps Lock” to “No action”
3. Install Seil
4. Change the Caps Lock key in Seil to keyCode 80 (F19)
5. Install Karabiner
6. Open Karabiner and go to Misc & Uninstall -> Open private.xml
7. Copy the contents of this gist's example to the XML file and save
8. In Karabiner, go to Change Keys -> Reload XML

staltz

How to show migration guides in GitHub Markdown

Use the diff code highlighting tag.

  ```diff
  - foo
  + bar

Example:

wesbos

{
  "keys": ["tab"], 
  "command": "expand_abbreviation_by_tab", 

  // put comma-separated syntax selectors for which 
  // you want to expandEmmet abbreviations into "operand" key 
  // instead of SCOPE_SELECTOR.
  // Examples: source.js, text.html - source
  "context": [
    {

0XDE57

ABOUT

about:config settings to harden the Firefox browser. Privacy and performance enhancements.
To change these settings type 'about:config' in the url bar. Then search the setting you would like to change and modify the value. Some settings may break certain websites from functioning and rendering normally. Some settings may also make firefox unstable. I am not liable for any damages/loss of data.

Not all these changes are necessary and will be dependent upon your usage and hardware. Do some research on settings if you don't understand what they do. These settings are best combined with your standard privacy extensions (HTTPS Everywhere No longer required: Enable HTTPS-Only Mode, NoScript/Request Policy, uBlock origin, agent spoofing, Privacy Badger etc), and all plugins set to "Ask To Activate".