aprilmintacpineda

aprilmintacpineda

What's this?

This was my answer to an exam that I went through online today. I think it might also be useful in the future so I'm putting it here as future reference when I need this functionality.

Buffering Promises

In this challenge, you'll be asked to wrap an unknown asynchronous function, returning a new function with a modified asynchronous behavior. The returned function will prevent making too many calls to the asynchronous function at once by buffering extra requests until an earlier one has completed.

A common use case would be to prevent overrunning an API endpoint, so you make no more than 4 requests simultaneously.

Your Task

aprilmintacpineda

This setup achieves:

• Imports will be resolved from /src folder.
• Code formatter and linter that works with the import module resolver.

1. Install dependencies

yarn add prettier eslint @typescript-eslint/typescript-estree @typescript-eslint/eslint-plugin eslint-plugin-react eslint-plugin-react-hooks eslint-plugin-module-resolver eslint-plugin-import  eslint-import-resolver-babel-module babel-plugin-module-resolver husky lint-staged eslint-plugin-jest @typescript-eslint/parser --dev

aprilmintacpineda

This setup achieves:

• Imports will be resolved from /src folder.
• Code formatter and linter that works with the import module resolver.
• Setup react-hooks linting

Using TypeScript

1. Install dependencies

aprilmintacpineda

What is this?

THIS SCRIPT WILL DELETE ALL ITEMS OF THE DYNAMODB TABLES OF YOUR APPSYNC APP.

How to use:

1. Copy-paste the script to your machine.
2. Run yarn add @aws-sdk/util-dynamodb aws-sd date-fnsk prompt-confirm.
3. Provide the correct values in the configuration section of the script.
4. Run the script via nodejs.

aprilmintacpineda

What

When using AWS AppSync with ElasticSearch, sometimes, the data on elastic search gets corrupted or gets missing, what you need to do to get it fixed is to update each items on all the table, which you don't wanna do manually.

This script will update each items on all dynamodb table in your AppSync by setting the updatedAt to the current timestamp.

THIS SCRIPT WILL UPDATE ALL ITEMS OF YOUR DYNAMODB IN YOUR APPSYNC APP

Usage

aprilmintacpineda

/**
 * NOTES:
 * - For the `domain` in configs, please refer to https://docs.fauna.com/fauna/current/api/fql/region_groups
 * - For the `secret`, please make sure that it's `admin`. Refer to https://docs.fauna.com/fauna/current/security/keys?lang=javascript
 * - The script retains the `Ref` of the data when it's being copied from the source to the destination, so relationships relying on this should still work out of the box.
 * - The goal here is to make an exact replicate of the source, so once the script is done running, the destination should just work out of the box.
 * - The script also checks if the collection, index, function or data already exists to prevent duplicates.
 */

/**

aprilmintacpineda

This setup achieves:

• Imports will be resolved from /src folder.
• Code formatter and linter that works with the import module resolver.
• Setup react-hooks linting

1. Install dependencies

yarn add prettier eslint @babel/eslint-parser eslint-plugin-react eslint-plugin-react-hooks eslint-plugin-module-resolver eslint-plugin-import eslint-import-resolver-babel-module babel-plugin-module-resolver husky lint-staged eslint-plugin-jest --dev

aprilmintacpineda

module.exports = {
  env: {
    browser: true,
    node: true,
    es6: true,
    'jest/globals': true
  },
  root: true,
  plugins: ['jest', 'react'],
  extends: [

aprilmintacpineda

const baseQuery = q.Paginate(q.Match(q.Index(indexName), terms));
// or
// const baseQuery = q.Paginate(q.Collection(collectionName))

const expandedQuery = q.Map(baseQuery, (ref) =>
  q.Let(
    {
      instance: q.Get(q.Var('ref'))
    },
    {