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@gaearon
gaearon / npm_init_error.md
Created June 28, 2018 00:53
What to do when npm init -y fails

If you get an "Invalid name" error when you run npm init -y, rename the project folder to only contain lowercase ASCII letters or hyphens (e.g. my-project), and try again.

@gaearon
gaearon / index.html
Last active February 13, 2024 09:46
Multiple React components on a single HTML page
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Add React in One Minute</title>
</head>
<body>
<h2>Add React in One Minute</h2>
<p>This page demonstrates using React with no build tooling.</p>
@gaearon
gaearon / minification.md
Last active March 4, 2024 12:45
How to Set Up Minification

In production, it is recommended to minify any JavaScript code that is included with your application. Minification can help your website load several times faster, especially as the size of your JavaScript source code grows.

Here's one way to set it up:

  1. Install Node.js
  2. Run npm init -y in your project folder (don't skip this step!)
  3. Run npm install terser

Now, to minify a file called like_button.js, run in the terminal:

@crypticmind
crypticmind / README.md
Last active March 25, 2024 06:26
Setup lambda + API Gateway using localstack
@agenthunt
agenthunt / hello-react-custom-renderer-hostConfig.js
Last active May 11, 2021 16:18
hello-react-custom-renderer-hostConfig
const rootHostContext = {};
const childHostContext = {};
const hostConfig = {
now: Date.now,
getRootHostContext: () => {
return rootHostContext;
},
prepareForCommit: () => {},
resetAfterCommit: () => {},
@agenthunt
agenthunt / hello-react-custom-renderer-render-function.js
Last active December 21, 2020 19:39
hello-react-custom-renderer-render-function
import ReactReconciler from 'react-reconciler';
const hostConfig = {};
const ReactReconcilerInst = ReactReconciler(hostConfig);
export default {
render: (reactElement, domElement, callback) => {
console.log(arguments);
// Create a root Container if it doesnt exist
if (!domElement._rootContainer) {
domElement._rootContainer = ReactReconcilerInst.createContainer(domElement, false);
@bvaughn
bvaughn / React.unstable_Profiler.md
Last active December 17, 2022 00:48
Notes about the in-development React <Profiler> component

Profiler

React 16.4 will introduce a new Profiler component (initially exported as React.unstable_Profiler) for collecting render timing information in order to measure the "cost" of rendering for both sync and async modes.

Profiler timing metrics are significantly faster than those built around the User Timing API, and as such we plan to provide a production+profiling bundle in the future. (The initial release will only log timing information in DEV mode, although the component will still render its children- without timings- in production mode.)

How is it used?

Profiler can be declared anywhere within a React tree to measure the cost of rendering that portion of the tree. For example, a Navigation component and its descendants:




  


  




    


          
    

      

        
        

          

              @flpvsk
          

          

            
                flpvsk
                / recorderWorkletProcessor.js
            
            

              Last active
              March 22, 2024 06:28
            

              
                An example of a recorder based on AudioWorklet API.
              
          

        

      

        

  

    
    


        



  


  

        

          
          /*
        

        

          
          A worklet for recording in sync with AudioContext.currentTime.
        

        

          
          

        

        

          
          More info about the API:
        

        

          
          https://developers.google.com/web/updates/2017/12/audio-worklet
        

        

          
          

        

        

          
          How to use:
        

        

          
          

        

        

          
          1. Serve this file from your server (e.g. put it in the "public" folder) as is.
        

  





    


  




    


          
    

      

        
        

          

              @emmiep
          

          

            
                emmiep
                / rollup.config.js
            
            

              Created
              April 18, 2018 16:28
            

              
                Rollup manual chunks for vendor bundle
              
          

        

      

        

  

    
    


        



  


  

        

          
          import babel from 'rollup-plugin-babel';
        

        

          
          import resolve from 'rollup-plugin-node-resolve';
        

        

          
          import commonjs from 'rollup-plugin-commonjs';
        

        

          
          import replace from 'rollup-plugin-replace';
        

        

          
          

        

        

          
          const env = process.env.NODE_ENV || 'development';
        

        

          
          

        

        

          
          export default {
        

        

          
            input: [
        

        

          
              'src/index.js'
        

  





    


  




    


          
    

      

        
        

          

              @vfarcic
          

          

            
                vfarcic
                / kops-aws-install-demo.sh
            
            

              Created
              March 2, 2018 15:47
            

          

        

      

        

  

    
    


        



  


  

        

          
          git clone https://github.com/vfarcic/k8s-specs.git
        

        

          
          

        

        

          
          cd k8s-specs
        

        

          
          

        

        

          
          git pull
        

        

          
          

        

        

          
          open "https://console.aws.amazon.com/iam/home#/security_credential"
        

        

          
          

        

        

          
          export AWS_ACCESS_KEY_ID=[...]