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const createObserverPattern = () => {
  let observers = [];
  let register = (observer) => {
    observers.push(observer);
  }
  
  let deregister = (observer) => {
    observers = observers.filter((registeredObserver) => !Object.is(observer, registeredObserver))
  }
  

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const getProxyExample = (initialObject = {}) => {
  const buildProxyClosure = () => {
      let data = {};
      let proxyHandler = {
          get(obj, prop) {
              return prop in data ? data[prop] : obj[prop];
          },
          set(obj, prop, value) {
              data[prop] = value;
          }

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query Input {
  discountNode {
    metafield(namespace: "my-discount-namespace", key: "my-discount-amount") {
      value
    }
  }
  cart {
    lines {
      merchandise {
        __typename

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// run from within app web/ directory, presumes the sqlite db file is named "database.sqlite" (default for template)

const DB_FILE_PATH = './database.sqlite';

const getAccessToken = async () => {
    return new Promise((resolve, reject) => {
        import('sqlite3').then((sqlite) => {
            const db = new sqlite.default.Database(DB_FILE_PATH);
            db.serialize(() => {
                db.get('SELECT accessToken FROM shopify_sessions LIMIT 1;', [], (err, { accessToken }) => {

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import socket
import select

if __name__ == "__main__":
    # Get socket file descriptor as a TCP socket using the IPv4 address family
    listener_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # Set some modes on the socket, not required but it's nice for our uses
    listener_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

    address_port = ("127.0.0.1", 8080)

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function warden_ngrok () {
    network_name=$(docker network ls --filter name=$1 --format '{{.Name}}')
    nginx_name=$(docker ps --filter name=$1_nginx --format '{{.Names}}')
    docker run --rm -it --link $nginx_name --net $network_name wernight/ngrok ngrok http $nginx_name:80
}

# Example: "myapp" is WARDEN_ENV_NAME from .env
warden_ngrok myapp

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# add to ~/.bashrc and run . ~/.bashrc or open a new terminal window
function m2config () {
        ssh -C $1 'php -d include_path='\''/var/www/stage/current:/var/www/html/current:/var/www/prod/current'\''  -r '\''$c = include "app/etc/env.php"; echo json_encode($c);'\''' | jq -r .$2
}

# usage
m2config www-stage@stage.mysite.com db.connection.default.username # returns db username from env.php

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# on VM
sudo su

rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
touch /etc/yum.repos.d/elasticsearch.repo

echo "[elasticsearch-6.x]
name=Elasticsearch repository for 6.x packages
baseurl=https://artifacts.elastic.co/packages/6.x/yum
gpgcheck=1

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diff --git a/vendor/magento/module-payment/Block/Transparent/Redirect.php b/vendor/magento/module-payment/Block/Transparent/Redirect.php
new file mode 100644
index 00000000000..aeaeee7e4d2
--- /dev/null
+++ b/vendor/magento/module-payment/Block/Transparent/Redirect.php
@@ -0,0 +1,60 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.

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>>> mr dev:console
$state = $di->get(\Magento\Framework\App\State::class);
$state->setAreaCode('frontend');
$redis = $di->get(\Magento\Framework\Session\SaveHandler\Redis::class);
$sessionData = $redis->read("<session id without 'sess_' prefix");

# fully decode like PHP
session_start();
session_decode($sessionData);
var_dump($_SESSION);